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Evaluating credit default risk in P2P lending: a market maturity perspective

Fialho, Rita Serras Celorico da Silva

Abstract

The Peer-to-Peer (P2P) lending industry has grown significantly in recent years, owing its traction to a growing interest in the market from both individual borrowers and lenders alike. Such platforms have greatly benefited from the advent of digital transformation and expanding internet footprint across people of all ages and backgrounds. These platforms leverage novel ways of interacting to facilitate an alternative means of financing which provides more opportunities to borrowers who may, otherwise not have access to debt through conventional mechanisms, and more investment opportunities to lenders who may be seeking to diversify their portfolios. This study leverages a dataset made available by the Lending Club P2P lending platform, containing more than 2 million loan entries, amassed over more than 10 years. Being a pioneer in the industry, Lending Club’s track record and data provide a good window into the inner workings of such platforms and their ability to assess the creditworthiness of borrowers and loan applications. We set out to build upon prior work done in this space by understanding and analyzing this dataset to identify the determinants of default of loans issued through P2P lending platforms. Our analysis is also employed to create a predictive model which is then tested against our dataset. This approach builds upon previous studies by outlining an end-to-end process to analyze and assess a platform’s ability to adequately predict credit default risk. We have found that, in alignment with prior work, such platforms are indeed able to adequately assess credit default risk, in the way that grades are assigned to individual loans. The logistic regression model which we have built has also yielded good results in predicting defaulted loans, while exhibiting mediocre performance in classifying fully repaid loans as likely cases of default.

Full text

i EVALUATING CREDIT DEFAULT RISK IN P2P LENDING Ri a Se as Celo ico Da Sil a Fialho A Ma ke Ma u i y Pe spec i e Disse a ion p esen ed as pa ial equi emen o ob aining he Mas e ’s deg ee in S a is ics and In o ma ion Managemen ii NOVA In o ma ion Managemen School Ins i u o Supe io de Es a ís ica e Ges ão de In o mação Uni e sidade No a de Lisboa EVALUATING CREDIT DEFAULT RISK IN P2P LENDING by Ri a Se as Celo ico Da Sil a Fialho Disse a ion p esen ed as pa ial equi emen o ob aining he Mas e ’s deg ee in S a is ics and In o ma ion Managemen Ad iso : P o . D . Jo ge Miguel Ven u a B a o, PhD No embe 2021 iii ABSTRACT The Pee - o-Pee (P2P) lending indus y has g own signi ican ly in ecen yea s, owing i s ac ion o a g owing in e es in he ma ke om bo h indi idual bo owe s and lende s alike. Such pla o ms ha e g ea ly bene i ed om he ad en o digi al ans o ma ion and expanding in e ne oo p in ac oss people o all ages and backg ounds. These pla o ms le e age no el ways o in e ac ing o acili a e an al e na i e means o inancing which p o ides mo e oppo uni ies o bo owe s who may, o he wise no ha e access o deb h ough con en ional mechanisms, and mo e in es men oppo uni ies o lende s who may be seeking o di e si y hei po olios. This s udy le e ages a da ase made a ailable by he Lending Club P2P lending pla o m, con aining mo e han 2 million loan en ies, amassed o e mo e han 10 yea s. Being a pionee in he indus y, Lending Club’s ack eco d and da a p o ide a good window in o he inne wo kings o such pla o ms and hei abili y o assess he c edi wo hiness o bo owe s and loan applica ions. We se ou o build upon p io wo k done in his space by unde s anding and analyzing his da ase o iden i y he de e minan s o de aul o loans issued h ough P2P lending pla o ms. Ou analysis is also employed o c ea e a p edic i e model which is hen es ed agains ou da ase . This app oach builds upon p e ious s udies by ou lining an end- o-end p ocess o analyze and assess a pla o m’s abili y o adequa ely p edic c edi de aul isk. We ha e ound ha , in alignmen wi h p io wo k, such pla o ms a e indeed able o adequa ely assess c edi de aul isk, in he way ha g ades a e assigned o indi idual loans. The logis ic eg ession model which we ha e buil has also yielded good esul s in p edic ing de aul ed loans, while exhibi ing medioc e pe o mance in classi ying ully epaid loans as likely cases o de aul . KEYWORDS C edi Risk; C edi De aul ; De aul Risk; P2P Lending; Lending Club; Logis ic Reg ession; Da a Analysis; De e minan s o De aul i INDEX 1 In oduc ion ................................................................................................................ 8 1.1 Lending Club ......................................................................................................... 9 2 Li e a u e e iew ....................................................................................................... 13 2.1 Online P2P lending his o y and cha ac e iza ion ............................................... 13 2.2 Risks o online P2P lending ma ke s – he good and he bad ............................ 13 2.3 De e minan s o de aul in online P2P lending ma ke s .................................... 15 2.4 Risk sco ing in online P2P lending ma ke s ........................................................ 15 3 Me hodology ............................................................................................................. 17 3.1 The Model - Logis ic Reg ession ......................................................................... 17 3.2 Pe o mance Measu emen s o he Model ....................................................... 18 4 Da a ........................................................................................................................... 20 4.1 Da a Desc ip ion ................................................................................................. 20 4.2 Da a Re inemen ................................................................................................ 21 4.3 Explo a o y Da a Analysis .................................................................................. 24 4.4 Final Va iables .................................................................................................... 28 5 Resul s and discussion ............................................................................................... 30 5.1 Model and Resul s .............................................................................................. 30 5.2 Model Pe o mance ........................................................................................... 33 6 Conclusions ............................................................................................................... 35 6.1 Limi a ions and Fu u e Wo k ............................................................................. 36 7 Bibliog aphy .............................................................................................................. 37 8 Appendix ................................................................................................................... 42 8.1 Appendix A ......................................................................................................... 42 8.2 Appendix B ......................................................................................................... 47 8.3 Appendix C ......................................................................................................... 48 LIST OF FIGURES Figu e 1 – Lending Club’s Business Model ................................................................................ 9 Figu e 2 - Numbe o loans issued by yea .............................................................................. 20 Figu e 3 - Numbe o obse a ions by employmen leng h .................................................... 22 Figu e 4 - Dis ibu ion o annual income ................................................................................ 25 Figu e 5 - D i ou lie s .............................................................................................................. 25 Figu e 6 - Rela ionship be ween in e es a e and subg ade .................................................. 26 Figu e 7 - Co ela ion Ma ix o nume ical a iables .............................................................. 27 Figu e 8 - ROC Cu e ............................................................................................................... 34 i LIST OF TABLES Table 1 - Con usion Ma ix ...................................................................................................... 18 Table 2 - Summa y o he employmen leng h a iable .......................................................... 22 Table 3 - Numbe o loans by loan s a us ............................................................................... 23 Table 4 - Summa y o he annual income a iable ................................................................. 24 Table 5 - Dis ibu ion o loans by home owne ship ................................................................ 27 Table 6 - Logis ic Reg ession esul s ....................................................................................... 31 Table 7 - Con usion Ma ix ...................................................................................................... 33 Table 8 - Model Pe o mance Measu es ................................................................................ 33 Table 9 - All Lending Club a iables wi h desc ip ion ............................................................. 42 Table 10 - Co ela ion ma ix o LC a iables .......................................................................... 47 Table 11 - Desc ip i e S a is ics o Nume ical Va iables ......................................................... 48 Table 12 - Desc ip i e S a is ics o Ca ego ical Va iables ....................................................... 49 ii LIST OF ABBREVIATIONS AND ACRONYMS ANNs A i icial Neu al Ne wo ks AUC A ea Unde he ROC Cu e BME Bayesian Model Ensembles DA Disc imina e Analysis DT Decision T ees DTI Deb o Income FPR False Posi i e Ra e GA Gene ic and E olu iona y Algo i hms LR Logis ic Reg ession MLM Maximum Likelihood Me hod NN Neu al Ne wo ks P2P Pee - o-pee OR Odds Ra io RF Random Fo es ROC Recei e Ope a ing Cha ac e is ic cu e SEC Secu i ies and Exchange Commission SVM Suppo Vec o Machine TPR T ue Posi i e Ra e 8 1 INTRODUCTION In mode n his o y, lending is conside ed o be one o he key ac i i ies ca ied ou by inancial ins i u ions. I is h ough he ins umen o c edi ha a ious economic ac i i ies see hei sp ead and di e si ica ion, om p oduc ion o consump ion. I is h ough c edi ha businesses and indi iduals uel hei needs o g ow and imp o e. In he ac i i y o “lending” money, wo pa ies en e a ansac ion in which a lende “lends” money o a bo owe , wi h a p omise o g adual epaymen . Rega dless o he e ms o epaymen , he e is always a isk associa ed wi h he bo owe no being able o pay back he loan. This isk is classi ied as “c edi isk” and is, hence, a measu e o he likelihood ha a bo owe may de aul on an issued loan, hus ailing o mee he e ms de ined in he con ac en e ed by bo h pa ies. Gi en he na u e and unce ain y o he c edi ma ke and conside ing he isks inhe en o he money- lending ac i i y, inancial ins i u ions ha e long sough o bo h de elop and imp o e he mechanisms h ough which hey e and check he quali y o bo owe s o whom hey lend money, as a means o educing c edi isk and, ul ima ely, making back hei ini ial in es men . The inancial c isis o 2007-2010 had a widesp ead and global impac on he en i e inancial indus y and as ly a ec ed o he sec o s o he economy, leading o a educ ion in he possibili y o ecou se o adi ional c edi by consume s and small businesses and dis us and dissa is ac ion wi h comme cial banks and o he es ablished inancial ins i u ions. The ad en o he in e ne and he inc ease in popula i y o web se ices and new business models based on le e aging he bene i s o in e connec i i y and as , ubiqui ous access o he in e ne , coupled wi h he a o emen ioned dis us and discon en wi h adi ional inancial ins i u ions and in e media ies, u he accele a ed he ise o al e na i e inance in he con ex o a globalized wo ld economy. Al e na i e inancial se ices compose an a ay o inancial se ices o e ed by p o ide s ha may ope a e ou side o he umb ella o egula ed ins i u ions. Despi e many o he p oduc s and se ices p o ided by hem no being “al e na i e”, bu a he he same as, o simila o hose o , adi ional p o ide s, ins i u ions in his segmen a e o en cha ac e ized by ha ing mo e inhe en isk o hei ope a ions and by execu ing adi ional unc ions/se ices ia al e na i e means o in e ac ion (e.g. le e aging he In e ne o connec inancial pee s in a ansac ion) (B adley e al., 2009). Pee - o-pee (P2P) lending is he p ac ice in which indi iduals lend money o o he indi iduals h ough, gene ally, an online pla o m ha di ec ly connec s lende s wi h bo owe s wi hou he in ol emen o a adi ional inancial in e media y. Whe e in con en ional lending a inancial ins i u ion, such as a bank, would lend money o an indi idual, equen ly aking some ype o colla e al o secu e i (such as a house o an au omobile), his new o m o lending complemen s he ma ke by opening lending as an in es men ehicle di ec ly a ailable o indi iduals, and expanding he oppo uni ies p o ided o a wide ange o bo owe s wi h, po en ially less es ic ions o cons ain s (such as age, c edi wo hiness and employabili y). P2P lending pla o ms o e simple egis a ion p ocesses o bo h bo owe s and lende s alike, allowing hem o submi de ails o hei c edi needs and unding in e es , espec i ely. A e 9 conduc ing he necessa y due diligence, hey connec bo owe s and lende s o ill loan eques s and p o ide unding ac oss a ange o isk le els (based on he c edi a ing p o ided o each loan). The i s su acing o p ac ical, gene ally accep ed and unc ional pla o ms aces back o Zopa, a B i ish P2P lending company, ounded in 2005 in he UK. Soon a e i , o he companies ollowed he same model, wi h many non- iable candida es and al e na i es coming o be. O he success ul pla o ms we e also s a ed in he US, wi h P ospe (2006) and Lending Club (2007) being he mos no able men ions. They a e cu en ly he wo la ges P2P companies in he US, espec i ely holding igu es o US$38 billion in issued loans and o e 2.5 million cus ome s o Lending Club and US$13 billion in issued loans and o e 820 housand cus ome s o P ospe (a he ime o w i ing). Despi e he espec able igu es p esen ed abo e, and he g ow h end e idenced in he sec o (which is expec ed o g ow o a US$897.85 billion ma ke by 2024), he P2P lending segmen s ill holds a conside ably small pe cen age o all consume c edi issued, when compa ed o he global igu es o US$3.9 illion. (T anspa ency Ma ke Resea ch, 2016) P2P lending pla o ms do, none heless, me i he a en ion hey ecei e. They con inue he end o disin e media ion ha online business models ha e es ablished in mode n-day In e ne and, hus, p o ide di ec access o unsecu ed consume c edi as an al e na i e in es men ehicle o indi idual lende s and do so a a much educed “in e media ion” cos due o de ia ing om he s anda d p ac ice o adi ional c edi o ganiza ions. They also democ a ize access o consume c edi , by employing he a o emen ioned model, and b ing i o he each o he o he wise non-c edi wo hy, by applying he necessa y sa egua ds and adequa ely p icing isk. (He zens ein, And ews, Dholakia, & Lyand es, 2008) 1.1 LENDING CLUB To allow o be e comp ehension o he da a which will be used in la e chap e s, i is impo an ha we i s de elop an unde s anding o he subjec unde s udy (Lending Club), by e iewing how i ope a es and wha ex e nali ies condi ion i s ope a ion. Figu e 1 – Lending Club’s Business Model Sou ce: Lending Club Co p Fo m 10-K o Fiscal Yea Ended Decembe 31, 2014. Secu i ies and Exchange Commission. 16 To assess c edi isk, in de eloped ma ke s lende s ypically conside his o ical loan applica ion and loan pe o mance da a collec ed egula ly om a small numbe o sou ces based on long-s anding banking and c edi ela ionships o de elop c edi -sco ing models. T adi ional c edi -sco ing models applying single-pe iod classi ica ion echniques (e.g., logi , p obi ) o classi y c edi cus ome s in o di e en isk g oups and o es ima e he p obabili y o de aul a e s ill he mos popula da a mining echniques used in he indus y (Chamboko & B a o, 2016, 2019a,b, 2020). Indi idual classi ie s employing single s a is ical o ope a ional esea ch me hods include linea and mul iple disc imina e analysis (DA), logis ic eg ession (LR), p obi analysis, linea and quad a ic p og amming and da a en elopmen analysis. Classi ie s using machine lea ning me hods such as neu al ne wo ks (NN), suppo ec o machine (SVM), decision ees (DT), gene ic and e olu iona y algo i hms (GA), and Bayesian Model Ensembles (BME) ha e also been in es iga ed (Zhao e al., 2017; Asho eh & B a o, 2019, 2021a,b; B a o e al., 2021; B a o & Ayuso, 2020, 2021). Olson, Delen & Meng (2012) ca y ou an ex ensi e compa ison be ween Decision T ees and o he con en ional da a mining echniques such as Neu al Ne wo ks and Suppo Vec o Machines in an a emp o de elop mo e anspa en and anspo able decision suppo ools o p edic ing bank up cy and simila compa a i e wo k is done by Huang e al. (2004). Di ick e al. (2017) employ su i al analysis echniques o achie e highe le els o ideli y in calcula ing a ime ho izon o when a gi en loan will de aul , hus acili a ing a e u n- ocused pe spec i e (as opposed o bina y classi ie s which a e ubiqui ous in he ield). A simila app oach is aken by Byanjanka (2017) o he online P2P lending ma ke whe e p omising esul s a e achie ed o p edic ing he su i al p obabili ies o bo owe s a di e en imes. Đu o ić (2017) analyses he p obabili y o de aul in a da ase o issued loans om online P2P lending pla o m Lending Club, by employing a su i al analysis model o analyze he p obabili y o de aul o loan e m leng h and pu pose. Findings yield ha he e a e iskie loan pu pose classes bu also asse ha a longe e m is associa ed wi h a highe likelihood o de aul . Tan e al. (2018) s udy a simila da ase and p opose an app oach elying on di e en ia ing loans based on nega i e ou comes (ei he “cha ge-o ” o “p e-paymen ”) and, le e aging on deep neu al ne wo ks, ou pe o ming he isk analysis capabili ies o adi ional isk assessmen capabili ies o adi ional su i al analysis echniques. Mezei, Byanjanka & Heikkilä (2018) use linguis ic da a ans o ma ion as a disc e iza ion s ep in adi ional supe ised lea ning algo i hms o success ully imp o e hei classi ica ion pe o mance. Byanjanka , Heikkilä & Mezei (2015) de elop a c edi sco ing model using A i icial Neu al Ne wo ks (ANNs) o e alua e c edi isk in P2P lending, achie ing sa is ac o y esul s. Mo e comp ehensi e wo ks ackle a a ie y o op ions o de e mining isk. Jin & Zhu (2015) de elop a mo e comp ehensi e amewo k o app oaching such da ase s and combine an in oduc o y s ep o iden i ying he de e minan s o isk h ough Random Fo es (RF) and impo ance analysis echniques o hen se e a mul i ude o da a mining algo i hms o compa ison. They conclude ha SVMs ou pe o m o he me hods, al hough by a ma ginal amoun . Ca michael (2014) uses a disc e e- ime haza d model (dynamic logis ic eg ession) o es ima e he p obabili y o de aul o P2P loans. By using a mix o bo h ha d and so in o ma ion, he model can achie e much be e esul s when compa ed o he su eyed pla o m’s c edi g ading sys em. 17 3 METHODOLOGY 3.1 THE MODEL - LOGISTIC REGRESSION In his wo k, we employ a logis ic eg ession model o assess he ac o s ha de e mine he loan pe o mance o P2P loans. Logis ic eg essions model he p obabili y o an e en occu ing depending on he alues o a se o independen a iables, p edic ing hei e ec on a bina y a iable esponse and classi ying obse a ions by es ima ing he p obabili y ha an ou come has in a pa icula ca ego y. This s a is ical echnique has been he mos widely used in c edi sco ing applica ions (Abdou & Poin on, 2011) and is conside ed he indus y s anda d o de eloping c edi sco ing models (Ala’ aj & Abbod, 2015; Lessmann, Baesens, Seow, & Thomas, 2015). Fo his s udy, loan s a us is ou dependen a iable wi h he ollowing bina y ou come: 0 (ze o) i he loan s a us is “Fully Paid”, meaning ha bo owe was able o epay he loan and 1 (one) i he loan s a us is “De aul ”, meaning ha he bo owe is unable o ully pay he loan and de aul 2 . In his sec ion, he wo k o Hosme J e al. (2013) was closely ollowed. Conside ing he abo e, he p obabili y o a loan de aul (condi ional p obabili y) gi en he independen a iable can be w i en as !" ( $!=1|(! ) =*((!) , + whe e he bo owe , +will de aul gi en he in o ma ion (! . I his p obabili y is g ea e han 50%, he model p edic s ha he bo owe belongs o he “De aul ” class, o he wise he model p edic s ha he bo owe ins ead belongs o he “Fully Paid” class. The i s s ep o de e mine his p obabili y is o es ima e a linea eg ession+ unc ion: !(#!) = &' "($") &'"($")= ((+ (&#!& + ⋯ + ()#!) + = 1, 2, … , '0 (1)0 whe e -" is a cons an , -# is a ec o o eg ession coe icien s and ( . ! is a ec o o independen a iables. Thus, #!) is he alue o he a iable Χ!# o he ,$% bo owe , wi h 0 =1,…,3 ( 3 is he numbe o independen a iables). Howe e , in a linea eg ession unc ion, he p obabili ies can be less han 0 and g ea e han 1, hence he model needs o es ic he p obabili y be ween 0 and 1 by including a non-linea unc ion (logi ) on o equa ion (1) ans o ming in o logis ic eg ession unc ion (equa ion 2): 1(#!) = *#(%") &+*#(%") 0 + = 1, 2, … , ' 0 (2)0 Ha ing he model speci ied, he nex s ep is o es ima e he coe icien s -" and -# . The me hod used o i he non-linea model is he Maximum Likelihood Me hod (MLM). This me hod gene a es alues o he unknown coe icien s ha maximize he p obabili y o ob aining he obse ed se o da a. The likelihood unc ion is shown in equa ion (3). 2 Please e e o he nex chap e , Da a, o a u he enligh enmen on he a iable loan s a us 18 4(5)=61(#,)-!71 − 1(#,)81−-! & !'( + + (3)+ I he a iable $! akes he alue 1 ( he bo owe de aul ), he likelihood is *! ; i no , he likelihood is equal o 1−*! . To simpli y, ma hema ically, he op imiza ion o he likelihood unc ion, he loga i hm o he equa ion is no mally maximized. The log-likelihood is de ined as: :(5)=ln[4(5)]?3,&'71(#,)8+@1 − 3,A&'71 − 1(#,)8 & !'( + + (4)+ + The e o e, o ind he alue o 5 ha maximizes he compu a ion : ( 5 ) we can isola e he cases -" and -# , se ing he equa ions equal o ze o and sol ing he p oblem o ob ain he desi ed esul . Due o he nonlinea i y o logis ic eg ession equa ions, so wa e-based compu a ion me hods mus be le e aged o compu e hem, add essing he i e a i e calcula ions equi ed. + 3.2 PERFORMANCE MEASUREMENTS OF THE MODEL To assess he p edic i e capaci y o ou model, we eco d and compa e i s p edic ions o he ac ual, known, obse a ions. A T ue Posi i e (TP) occu s whene e a posi i e p edic ion (ou come equal o “1”, o “de aul ”) made by he model coincides wi h he obse a ion, whe eas a False Posi i e (FP) is eco ded when he model’s posi i e p edic ion is w ongly classi ied and con adic s he obse a ion. T ue Nega i es (TN) and False Nega i es (FN) deno e a simila logic, bu o nega i e p edic ions (ou come equal o “0”, o “ ully paid”). Table 1 - Con usion Ma ix Obse ed Posi i e Nega i e P edic ed Posi i e TP FP Nega i e FN TN Sou ce: Au ho ’s p oduc ion. To e i y he p edic i e capaci y o ou logis ic eg ession model, i is necessa y o unde s and i s disc imina ion unc ion. Fo his, and conside ing he abo e con usion ma ix, we can calcula e he ollowing pe o mance measu es: Accu acy measu es he o e all a io o co ec ly p edic ed obse a ions and can gi e an o e all iew o he model's pe o mance. Howe e , looking a his measu e alone can build a alse pe cep ion o he model due o i s na ow ocus. 19 BCCD"EC$ =FG+F! FG+F!+IG+I!+ + (5)+ Sensi i i y co esponds o he p obabili y o he co ec classi ica ion o he e en o in e es o occu , i.e., how well he model co ec ly classi ies ue posi i es. JKLM,N,O,N$ =F! F!+IG+ + (6)+ Speci ici y is de ined as he p opo ion o obse a ions co ec ly p edic ed o belong o he nega i e class. JPKC,Q,C,N$ =FG FG+I!+ + (7)+ Al e na i e me hods o e alua e he pe o mance o a classi ica ion model wi h bina y classes include he Recei e Ope a ing Cha ac e is ic (ROC) cu e and he A ea Unde he Cu e (AUC) (Wendle & G ö up, 2016). The ROC shows he alues o which he e is g ea e op imiza ion o Sensi i i y as a unc ion o Speci ici y, i.e., plo s he ue posi i e a e (TPR o Sensi i i y) o a disc e e classi ie agains he alse posi i e a e (FPR o 1-Speci ici y). The AUC, in u n, being a unc ion o bo h he TPR and he FPR, p o ides a measu e o he model’s abili y o di e en ia e be ween classes, o i s disc imina ion powe – how e ec i ely i can p edic nega i e and posi i e ou comes co ec ly. As a baseline we can unde s and how he op imal alue o AUC would be 1 – he cu e would pass by poin (0,1), which would hen maximize AUC and gi e he op imal esul o 100% TPR and 0% FPR. Con a ily o his, he baseline unc ion d awn o * ( (! ) in he ROC cu e plo p o ides he lowe bound o a model wi hou classi ica ion powe and a calcula ed alue o 0.5 o AUC. 20 4 DATA This chap e is di ided in o 4 sec ions. In he i s sec ion, “Da a Desc ip ion”, we p o ide a b ie , high- le el desc ip ion o he da a collec ed. In he second pa , “Da a Re inemen ”, we p oceed o desc ibe he s eps aken o clean up he da ase and elabo a e on how he da a e inemen was accomplished. A e ha ea men o he s a ing da ase , we conduc an explo a o y analysis o he new, e ined, da ase in he hi d sec ion “Explo a o y Da a Analysis”. The e we summa ize he key obse a ions on a iables o he da ase , iden i ying ou lie s and handling missing alues. A he end o his sec ion, we p o ide he desc ip i e s a is ics and co ela ion be ween he selec ed a iables. 4.1 DATA DESCRIPTION The da a unde analysis we e e ie ed om he Lending Club websi e 3 , he la ges P2P lending pla o m in he Uni ed S a es. The da a collec ed con ains in o ma ion on mo e han 2,200,000 loans issued h ough he pla o m om 2007 o 2019. Al hough he la es obse a ions in he da ase a e om Ma ch 2019, i con ains only loans issued un il Decembe 2018. Figu e 2 shows he numbe o loans issued h oughou he yea s and in i , we can obse e a p ominen g ow h end in he o al numbe o issued loans un il 2015, whe e he numbe o loans app oxima ely doubles yea - o-yea . F om 2015 onwa ds he e is s ill an inc ease, bu i is subdued when compa ed o he p e ious ime ame. Figu e 2 - Numbe o loans issued by yea Sou ce: Au ho ’s p oduc ion. The o iginal da ase is composed o 151 a iables co e ing de ails ac oss 3 main opics, which a e ocused on: bo owe de ails, loan cha ac e is ics and inal loan s a us (whe e a ailable). Bo owe in o ma ion includes da a poin s such as occupa ion, employmen de ails, c edi a ing and o he addi ional in o ma ion which p o ides Lending Club use s wi h an o e iew o who he bo owe is 3 Downloaded om h ps://www.lendingclub.com/in o/download-da a.ac ion 21 and wha hei cu en inancial/labo s a us is. Loan cha ac e is ics include de ails such as he amoun o he loan, in e es a e, mon hly ins allmen , pu pose o he loan, and o he loan-speci ic elemen s, ha cla i y how he loan is o be epaid. Finally, he in o ma ion p o ided on he inal loan s a us in o ms o he la es s a us o he loan, a he ime o obse a ion (i.e. he loan can ei he be paid o , de aul ed, o e due o cu en ) and p o ides addi ional con ex , depending on ha same s a us – e.g. is he e a paymen plan o he de aul ed loan. The ull desc ip ion o all 151 a iables can be ound in Appendix A. Ou o 151 a iables, we ha e selec ed 22 independen a iables, as no all he a iables a e ele an o his analysis. The selec ion o he a iables in he s udy is explained u he in he ollowing sub-sec ions. 4.2 DATA REFINEMENT In his sec ion, we desc ibe all he s eps in ol ed in he ea men o he da ase and how we ha e p oceeded o e ine he da a he ein. The i s s ep in ou ea men o he da ase consis s o na owing down he ime ame unde s udy. We p oceed o il e ou he loans ha ha e no eached ma u i y ye , o gua an ee consis ency be ween he da a poin s a ailable. Wi h his, we ha e emo ed all loans wi h a 36-mon h epaymen e m ha we e issued a e Feb ua y 2016 and all loans wi h a 60-mon h epaymen e m ha we e issued a e Feb ua y 2014. The loans issued in 2007 we e also emo ed as he bo owe in o ma ion ini ially eques ed was di e en om he ollowing yea s. As p e iously men ioned, no all he a iables a e ele an o ou s udy. Ou goal wi hin his sec ion is o iden i y p edic o s o de aul so ha a he ime o he loan eques , he pla o m can use hose a iables as a e e ence o decide on whe he o app o e o ejec he loan. Due o his, any a iables ha a e no a ailable a he ime o he loan applica ion canno be used as p edic o s o c edi app o al. Fo his eason, we emo ed a iables such as nex _pymn _d, ha dship_ lag, pymn _plan among o he s ela ed o hese. We lea e ou some a iables because hey ep esen he same da a as o he s, such as unded_amoun and unded_amoun _in ha ep esen he same as loan_amn . O he a iables a e also deemed o no be ele an as hey don’ ha e any impac on he bo owe ’s likelihood o de aul , such as id, membe _id and policy_code, and gi en his, hey a e also emo ed. We also p oceeded o emo e da ase columns such as emp_ i le and u l, because hey con ain oo many unique alues, making hem di icul o ca ego ize and analyze, so we op o lea e hem ou o he s udy. Ano he eason o dele e columns is he high equency o missing da a in some a iables. We ha e decided o lea e ou all he a iables wi h mo e han i e pe cen (5%) o missing alues. The e o e, we ha e le ou a iables such as m hs_since_las _ eco d and m hs_since_las _delinq. A u he e inemen is conduc ed on he emp_leng h a iable, due o i ha ing a subs an ial olume o missing alues. To p e en disca ding hese da a poin s (which amoun o app oxima ely 6% o he o al da ase ), we emploied a ‘binning” echnique and g oup all missing alues in o a sepa a e g oup labeled “missing”. Figu e 3 illus a es he dis ibu ion o he numbe o obse a ions by he leng h o employmen . 22 Figu e 3 - Numbe o obse a ions by employmen leng h Sou ce: Au ho ’s p oduc ion. I can be obse ed in Figu e 3 ha he majo i y o he ca ego ies ha e a subs an ially educed numbe o obse a ions when compa ed wi h he ca ego y “10+ yea s”. We chose o agg ega e some ca ego ies oge he , esul ing in wo new ca ego ies (“0 - 4 yea s” and “5 - 9 yea s”). This s ep was execu ed o simpli y he ca ego ies a ailable in a iable emp_leng h. Table 2 below shows he new dis ibu ion o he a iable emp_leng h. Table 2 - Summa y o he employmen leng h a iable Missing 0 - 4 yea s 5 - 9 yea s 10+ yea s 41,645 278,428 183,607 231,919 Sou ce: Au ho ’s p oduc ion. The only o he a iables wi h missing alues we e e ol_u il and pub_ ec_bank up cies, wi h 0.06% and 0.11% o missing alues, espec i ely. As hese pe cen ages ep esen a o al o 1,208 obse a ions we decided o emo e hese missing alues. As p e iously s a ed, loan s a us is he dependen a iable o his s udy and i is di ided in o six ca ego ies desc ibed in Table 3. To adap he a iable o ou model, we ha e o ans o m i in o a a iable con aining a bina y ou come/ alue, 0 o 1. When he loan_s a us assumes he alue o one (1) i ep esen s he ailu e o paymen , meaning ha he bo owe is unable o ully pay he loan and e en ually de aul s. On he o he hand, when loan_s a us assumes he alue ze o (0), his means ha he bo owe had paid he loan, ul illing he es ablished con ac . 23 Table 3 - Numbe o loans by loan s a us Ini ial Da a Se Dis ibu ion Final Da a Se Dis ibu ion Loan S a us # o Loans Loan S a us # o Loans Cha ged O 109,258 1 - De aul 109,797 Cu en 433 0 - Fully Paid 623,770 Does no mee he c edi policy. S a us: Cha ged O 539 Does no mee he c edi policy. S a us: Fully Paid 1,521 Fully Paid 622,249 In G ace Pe iod 40 La e (16-30 days) 34 La e (31-120 days) 317 To al 734,391 To al 733,567 Sou ce: Au ho ’s p oduc ion. To p oceed wi h he ans o ma ion o he a iable, we ha e emo ed all he loans wi h “Cu en ” s a us as he bo owe s a e s ill making mon hly paymen s and we don’ ye know he inal s a us. Loans wi h he “In G ace Pe iod” s a us ep esen he loans ha a e a he mos 15 days wi h a la e paymen and loan s a uses wi h names “La e (16-30 days)” and “La e (31-120 days)” ep esen he loans ha e a delayed ins allmen be ween 16-30 and 31-120 days, espec i ely. While hese loans a e in some way in de aul , we il e ed hem ou in his s udy as he p obabili y o hem being paid back is signi ican (26% o 72%) compa ed wi h he “De aul ” s a us (11%) (Lending Club, 2019a). We hen p oceeded o agg ega e he s a us “Cha ged O ” wi h “Does no mee he c edi policy. S a us: Cha ged O ” in o a newly c ea ed s a us labeled as “De aul ”, since bo h co espond o he same ou come. The s a us “Does no mee he c edi policy. S a us: Fully Paid” is also combined in o he “Fully Paid” ca ego y. Table 3 shows he ini ial dis ibu ion o he numbe o loans by s a us and he inal dis ibu ion a e he adjus men s. The loan desc ip ion p o ided by he bo owe on why he loan is needed is con ained in he a iable desc and i is op ional in o ma ion ha mos o he bo owe s lea e blank. The a iable by i sel is di icul o analyze since his is a ee-s yle ield. To e ie e alue ou o his a iable, we c ea ed a dummy a iable, w i ing_skills, ha is de i ed om he o iginal use inpu . I he bo owe has le a desc ip ion on his ield, he o she will ha e au oma ically 10 poin s. Then, we check i he e a e any spelling mis akes on he desc ip ion - i de ec ed, 2 poin s will be deduc ed om he ini ial 10. We also check i he ex has no end ma ks, i.e., i i is missing ending punc ua ion - i de ec ed, ano he 2 poin s will be deduc ed. The possible alues o w i ing_skills a e 0, i he bo owe hasn’ w i en any desc ip ion, 6 i he e is any wo d misspelled and any missing punc ua ion, 8 i he e is any wo d misspelled o any missing punc ua ion, and 10 i he e is a desc ip ion wi h no spelling mis akes and wi h co ec punc ua ion. Al hough he desc a iable is only illed in by app oxima ely 17% o bo owe s, ea lie wo ks ha e indica ed ha his a iable may be a good p edic o o de aul (Ca michael, 2014). We employ his 24 composi ion o ex ual analysis me hods o de i e nume ic da a which is easie o analyze and o use wi hin he con ex o ou p edic ion model. Las ly, he da e o he ea lies c edi line opened by he bo owe (mon h and yea ) is shown in ea lies _c _line. We ha e c ea ed a dummy a iable, c edi _his o y, whe e we ha e sub ac ed he loan’s issue da e by he da e o he ea lies c edi line. We now ha e he numbe o yea s o c edi his o y conside ing he da e when he bo owe ’s ea lies epo ed c edi line was opened. The a o emen ioned e inemen s eps esul in he educ ion o a iables om a s a ing base o 151 o a o al o 25. In he sub-sec ion ha ollows we p oceed o analyze he esul ing da ase and conduc any addi ional e inemen ha may be deemed necessa y, be o e building ou model. 4.3 EXPLORATORY DATA ANALYSIS To u he e ine ou da ase and o p epa e i o usage in building ou p edic ion model, we ha e conduc ed an explo a o y analysis o he p o ided da a. We begin his explo a o y da a analysis by in es iga ing he ou lie s ha may exis on he da ase . Ou i s inding ocuses on he a iable annual_inc. Table 4 p o ides a summa y o his a iable and a i s glance, we can de ec some alues ha seem un ealis ic o his da a. The maximum annual income o $9,000,000 compa ed wi h he median annual income o $62,000 and he 3 d qua ile o $89,000 sugges s ha he e a e some ou lie s. Figu e 4 shows he dis ibu ion o bo owe s’ annual income. Obse ing Table 4 along wi h Figu e 4, we can con i m he e idence o ou lie s. Table 4 - Summa y o he annual income a iable Min. 1s Qu. Median Mean 3 d Qu. Max. 0 45,000 62,000 73,689 89,000 9,000,000 Sou ce: Au ho ’s p oduc ion. A deepe analysis o he emaining in o ma ion p o ided o hese obse a ions shows ha he majo i y o he bo owe s a e eques ing small loan amoun s o deb consolida ion. Taking all hese de ails in o accoun , we conside hese eco ds o be he esul o human e o and, he e o e, we ha e limi ed he highes alue o annual income o $1,000,000. In o al, he e we e 139 obse a ions emo ed. 25 Figu e 4 - Dis ibu ion o annual income Sou ce: Au ho ’s p oduc ion. Ano he inding conce ns he d i a iable (deb - o-income a io), which ep esen s he a io o he bo owe ’s o al mon hly deb paymen s o e hei mon hly income. Figu e 5 displays he boxplo o he a iable d i. Figu e 5 - D i ou lie s Sou ce: Au ho ’s p oduc ion. In obse ing Figu e 5 i becomes no iceable ha he majo i y o loans a e concen a ed in he ange o alues be ween 10 and 25 and he e is e idence o se e al ou lie s. We belie e ha hese ou lie s a e caused by an e o as he da a p o ided would indica e ha some bo owe s ha e signi ican ly mo e ou s anding deb han hei cu en income – we also obse ed he alue o d i o be inconsis en wi h some o he o he da a poin s p o ided, o some bo owe s – hus, we ha e emo ed all he ou lie s. Compa ed wi h o he s udies, o ins ance, Ca michael (2014), Emek e e al. (2015) and Möllenkamp (2017), we can see ha a e he emo al o he ou lie s, he maximum alue o his a iable is as expec ed. The exclusion o d i’s ou lie s dec eases ou da ase by 484 obse a ions. 32 The same happens wi h he in e es a e. This a iable is also highly signi ican on he p edic ion o he de aul ha wi h he inc ease o he a e, he p obabili y o de aul also inc eases. This inding is consis en wi h he indings in Figu e 6 ep esen ed in he p e ious chap e . Loan amoun and e m a e o he a iables o be highly signi ican in p edic ing he ailu e o he loan paymen . The posi i e sign on hese a iables sugges s ha bo owe s wi h a la ge loan amoun and a longe pe iod o loan paymen a e mo e likely o de aul . E e y hing else equal, his p o es ha bo owe s who eques la ge loan amoun s on a longe - e m and he e o e will ha e la ge ins allmen s o a longe pe iod o paymen a e mo e likely o ail he paymen s. The a iable home owne ship shows ha a bo owe paying en o owning a house is mo e likely o de aul han a bo owe ha pays a mo gage. These esul s a e in line wi h he da a p e iously e ealed on he explo a o y analysis whe e hese wo ca ego ies ha e a highe de aul a e han he la e one. Fu he o his, he wo ca ego ies ha ha e some kind o e i ica ion on he a iable e i ica ion s a us a e also highly signi ican p edic o s. The esul s a e in line wi h he da a examined in he p e ious chap e . This may sugges ha Lending Club e i ies he bo owe s ha hey belie e o ha e a highe isk o de aul . Annual income, FICO and d i a e also highly signi ican a iables. The nega i e sign on he wo i s a iables implies ha a bo owe wi h a highe income and a g ea e FICO sco e is less likely o de aul . Con a ily, he las o hese a iables wi h a posi i e sign indica es ha bo owe s wi h highe amoun s o deb s uggle mo e o epay hei loans. The bo owe ’s pu pose o eques ing a loan has 14 ca ego ies. O hose 14, 10 ca ego ies a e signi ican a di e en le els. Bo owe s needing a loan o help hem inance hei “educa ion”, “small business” o “medical expenses” a e iskie bo owe s han hose who a e inancing hei “wedding”, “ aca ion” o epaying hei “c edi ca d” deb . Ac ually, he ca ego y “wedding” egis e s a nega i e co ela ion wi h he likelihood o de aul e ealing o be he only pu pose ha a ec s nega i ely he p obabili y o de aul wi h an OR o 0.824. On he a iable employmen leng h, al hough he ca ego y 5-9 yea s is signi ican (a 5% le el), only he ca ego y “missing” is highly signi ican a he 0.1% le el. Also, he la e has a coe icien wi h a posi i e sign and OR o 1.516, ha ing a big impac on he likelihood o de aul . The ca ego y 10+ yea s, despi e no being signi ican , is he only one om his a iable wi h a nega i e sign, ha ing he opposi e e ec on he p obabili y o de aul . These esul s a e aligned wi h he da a in Table 12 o Appendix C. A possible jus i ica ion o he inc eased likelihood o a bo owe de aul ing, when egis e ed unde he “missing” ca ego y, may be due o him being unemployed and, hence, being mo e likely o de aul . Rega ding he a iables ela ed o he c edi his o y o he bo owe , inqui ies las 6 mon hs, open accoun s, e ol ing balance, e ol ing line u iliza ion a e and c edi his o y a e also highly signi ican . This is in line wi h ou expec a ions, inqui ies las 6 mon hs and open accoun s show he bo owe s lack epaymen o a loan, inc easing he p obabili y o de aul . On he o he hand, e ol ing balance, e ol ing line u iliza ion a e, and c edi his o y show a nega i e ela ionship wi h he likelihood o de aul o a bo owe . 33 Su p isingly, he a iable cha ged o wi hin 12 mon hs has a nega i e impac on he p obabili y o de aul o he bo owe , i.e., he bo owe wi h mo e cha ge-o s (on o he loans) in he las 12 mon hs is mo e likely o ully pay back he loan. The a iable w i ing skills is highly signi ican and a ec s he p obabili y o de aul nega i ely. When he alue o w i ing skills inc eases, he p obabili y o he bo owe paying also inc eases. Rega ding public eco ds, he a iable seems no o ha e any signi icance on he model in es iga ed, howe e has an odds a io o 1.011, which is highe han o he a iables wi h a highe le el o signi icance. 5.2 MODEL PERFORMANCE The p edic i e capaci y o he model was es ed by le e aging he emaining 33% o he sample da ase which we e no used o building ou logis ic eg ession model (i.e. used in he “ aining” se ). We hen p oceeded o use his “ es ing” se o e ie e a se ies o pe o mance me ics o analyze he model, as desc ibed in sec ion 3.2. Table 7 p o ides he summa y o he ou comes in a con ingency able. Table 7 - Con usion Ma ix Obse ed Posi i e Nega i e P edic ed Posi i e 207745 79 Nega i e 36292 64 Sou ce: Au ho ’s p oduc ion. Based on he alues o he abo e able, we calcula ed he ollowing pe o mance measu es. Table 8 - Model Pe o mance Measu es Accu acy 0.851 Sensi i i y 0.851 Speci ici y 0.448 Sou ce: Au ho ’s p oduc ion. The accu acy alue o he es da ase in he s udy has a e y good ou come. Ne e heless, we ha e in mind ha his esul is dependen on he manual spli o he da a ha we did ea lie and ha his measu e alone is no a eliable indica o o he model’s pe o mance. Conce ning he o he wo measu es, he model pe o ms be e in dis inguishing bo owe s ha de aul ed han bo owe s ha ully paid, as i yields be e esul s o sensi i i y han speci ici y. Figu e 8 shows he ROC cu e o ou model. As we can obse e, he cu e is e y close o he baseline (black line ha ep esen s he balance TPR=FPR). 34 Figu e 8 - ROC Cu e Sou ce: Au ho ’s p oduc ion. By e iewing he AUC indica o , i s esul e eals a alue o 0.6835, showing ha , al hough ou model can accu a ely p edic loans ha will de aul , i is a less capable a p edic ing loans ha will no do so. This ep esen s a lack o abili y o di e en ia e be ween he 2 classes o ou dependen a iable – “de aul ” VS “ ully paid”. We can conclude om he esul s and ela ed pe o mance measu es ha he model’s classi ica ion powe is a he bes “a e age”. We belie e ha his lack o quali y may be due o he imbalanced classi ica ion in ou dependen a iable as i is a common limi a ion wi hin loan classi ica ions and c edi isk modeling. As pe Singh, Tsai, & Ramiah (2014), his imbalance nega i ely impac s algo i hms such as Logis ic Reg ession ha op imizes ac oss he en i e aining se . 35 6 CONCLUSIONS In an inc easingly inancialized wo ld, whe e new inancial echnologies and se ice models keep on dis up ing he es ablished and adi ional p ac ices and indus ies, pee - o-pee (P2P) lending seeks o democ a ize access o c edi o a wide ange o bo owe s (including hose deemed by con en ional inance o be non-c edi wo hy) and also o unsecu ed consume deb , o a wide ange o in es o s. In doing so, i is b idging a demand and a supply gap which cu en ly exis s in his la gely un apped ma ke . Lending Club, being one o he pionee s and bigges P2P lending pla o ms, p o ides a good objec o s udy and aluable insigh in o he inne wo kings o hese pla o ms and hei abili y o adequa ely p edic he isk o c edi de aul . This las unc ion u ns Lending Club (and o he analogous pla o ms) in o mo e han jus a media o connec ing supply and demand, assigning i he esponsibili y o cu a ing and a es ing bo owe in o ma ion and isk. In he beginning o his wo k, we se ou o s udy a da ase o loan obse a ions om he Lending Club pla o m, con aining in o ma ion o loans issued be ween 2007 and 2018. Wi h i we endea o ed o u he he cu en unde s anding and es ablished knowledge o wha a e he de e minan s o loan de aul and wha pe o mance we can expec om a p edic ion model buil a op his da a. In o de o achie e his, we i s conduc ed a cleaning and e inemen o he da a se , elimina ing inco ec and missing da a, whe e equi ed. This p ocess was ollowed by an explo a o y analysis o he ou pu ed da a, o gain an o e all unde s anding o he exis ing a iables, hei co ela ion and d i ing he selec ion o he inal a iables o be used o ou s udy o de e minan s o de aul . To u he ou analysis, we buil a logis ic eg ession model o analyze he da ase using he s epwise backwa d echnique in o de o a i e a a inal, model-de i ed, se o independen a iables ha we e he mos signi ican o p edic ing loan de aul . Ou analysis aims a es ablishing a li ecycle o e iewing and unde s anding bo owe de aul based on ha d da a eadily a ailable o he in es o (o o P2P lending pla o ms). Unlike p io wo k, which ocused on de eloping p edic i e models o iden i ying he de e minan s o de aul , ou wo k lays ou and end- o-end ounda ion o unde s anding he cha ac e is ics o bo owe s loans wi hin a pla o m (o se o loan obse a ions), iden i ying de e minan s o de aul , building a p edic i e model and analyzing i s e icacy in p edic ing loan de aul . Ou esul s seem o be consis en wi h exis ing li e a u e (Ca michael, 2014; Emek e e al., 2015; Polena & Regne , 2018; Se ano-Cinca e al., 2015) and sugges ha he a iables which bes explain (o p edic ) he bo owe s likelihood o de aul a e g ade, loan amoun , in e es a e, e m, annual income, home owne ship, deb - o-income a io, FICO sco e, inqui ies in las 6 mon hs, numbe o open accoun s and c edi his o y. The mos ele an independen a iable is he g ade o a bo owe (as assigned by Lending Club) which, ha ing he highes odds a io, p esen s he bes p edic o o loan de aul . The highe he g ade o a gi en loan (“A” being he highes g ade and “G” he lowes , in alphabe ical o de ), he highe he likelihood ha i will be ully epaid. 36 Finally, al hough ou model has shown a high accu acy a e o 0.8511, he AUC analysis p oduced a esul o 0.6835, meaning ha he o e all pe o mance o ou model, as ep esen ed by i s abili y o dis inguish be ween classes (i.e. bo owe s ha will de aul VS bo owe s ha will ully pay back a loan) is a om excellen and, a bes , medioc e. In summa y, al hough ou model has been able o e ec i ely p edic de aul ed loans, i s esul s ha e yielded a signi ican amoun o “ alse nega i es”, i.e. ully paid loans ha we e p edic ed o de aul . We ex apola e om his ha , al hough oppo uni ies may be missed o und good quali y loans, i is bes o e on he side o cau ion when dealing wi h unsecu ed consume deb . 6.1 LIMITATIONS AND FUTURE WORK Th oughou his wo k, we iden i ied se e al limi a ions and cons ain s ha may ha e hinde ed ou in es iga ion and i s subsequen esul s. We p esen hose in his sec ion and also a emp o lay ou he ounda ion o u u e wo k o build upon he esul s p o ided he ein. Du ing he ini ial analysis and clean-up/ e inemen o ou da ase , we we e o ced o emo e a subs an ial numbe o a iables and loan obse a ions due o missing da a o inco ec ly illed ou o ms. This app oach, al hough consis en wi h es ablished da a analysis p ac ices, may ha e caused he loss o po en ially aluable da a poin s o he s udy. We hypo hesize ha he cause o his p oblem, wi h a special ocus on inco ec ly p o ided da a, is likely ied o he ac ha hese pla o ms allow o he manual in oduc ion o da a by use s. Such pla o ms also lack he manpowe o capaci y o handle and p ope ly e 100% o he da a which hey ecei e. Wi h ega ds o he esul s ob ained wi h he de eloped logis ic eg ession model, we es ima e ha he medioc e p edic i e pe o mance, which we achie ed, is a p oduc o he da ase being imbalanced. This is a common issue in c edi da ase s as hese will la gely con ain a disp opo iona e amoun o non-de aul ed loans (85% o non-de aul ed loans in ou da ase ) and one ha nega i ely impac s he p edic i e capaci y o logis ic eg ession models (Singh e al., 2014). 37 7 BIBLIOGRAPHY Abdou, H. A., & Poin on, J. (2011). C edi sco ing, s a is ical echniques and e alua ion c i e ia: a e iew o he li e a u e. In elligen Sys ems in Accoun ing, Finance and Managemen , 18(2–3), 59–88. Ala’ aj, M., & Abbod, M. (2015). A sys ema ic c edi sco ing model based on he e ogeneous classi ie ensembles. 2015 In e na ional Symposium on Inno a ions in In elligen SysTems and Applica ions (INISTA), 1–7. Asho eh, A. & B a o, J. M. (2019). A non-pa ame ic based compu a ionally e icien app oach o c edi sco ing. A as da Con e encia da Associacao Po uguesa de Sis emas de In o macao 2019 [CAPSI 2019 - 19 h Con e ence o he Po uguese Associa ion o In o ma ion Sys ems, P oceedings. 4]. h ps://aisel.aisne .o g/capsi2019/4. Asho eh, A., & B a o, J. M. (2021a). A Conse a i e App oach o Online C edi Sco ing. Expe Sys ems Wi h Applica ions, Volume 176, p. 1-16, 114835. h ps://doi.o g/10.1016/j.eswa.2021.114835 Asho eh, A. & B a o, J. M. (2021b). Spa k Code: A No el Conse a i e App oach o Online C edi Sco ing [Sou ce Code]. h ps://doi.o g/10.24433/CO.1963899. 1. Associa ed Publica ion: “A Conse a i e App oach o Online C edi Sco ing”, Expe Sys ems wi h Applica ions, h ps://doi.o g/10.1016/j.eswa.2021.114835 Ba h, C. (2012). Looking Fo 10% Yields? Go Online Fo Pee To Pee Lending. Fo bes. Re ie ed om h ps://www. o bes.com/si es/ch isba h/2012/06/06/looking- o -10-yields-go-online- o -pee - o-pee -lending/#6396ea a3a8 Be ge , S. C., & Gleisne , F. (2009). Eme gence o inancial in e media ies in elec onic ma ke s: The case o online P2P lending. BuR Business Resea ch Jou nal, 2(1). Boo , A. W. A., & Thako , A. V. (1997). Financial sys em a chi ec u e. The Re iew o Financial S udies, 10(3), 693–733. B adley, Ch is ine; Bu house, Susan; G a on, Hea he ; Mille , R.-A. (2009). Al e na i e Financial Se ices: A P ime . FDIC Qua e ly, 3(1), 39–47. Re ie ed om h ps://www. dic.go /bank/analy ical/qua e ly/2009- ol3-1/ dic140-qua e ly ol3no1-a s- inal.pd B a o, J. M. (2020). Longe i y-Linked Li e Annui ies: A Bayesian Model Ensemble P icing App oach. CAPSI 2020 P oceedings, 29. h ps://aisel.aisne .o g/capsi2020/29. B a o, J. M. (2021). P icing pa icipa ing longe i y-linked li e annui ies: A Bayesian Model Ensemble app oach. Eu opean Ac ua ial Jou nal. h ps://doi.o g/10.1007/s13385-021-00279-w B a o, J. M., Ayuso, M. (2020). Mo ali y and li e expec ancy o ecas s using bayesian model combina ions: An applica ion o he po uguese popula ion. RISTI - Re is a Ibé ica de Sis emas e Tecnologias de In o mação, E40, 128–144. h ps://doi.o g/10.17013/ is i.40.128–145. B a o, J. M., Ayuso, M. (2021). Fo ecas ing he e i emen age: A Bayesian Model Ensemble App oach. Ad ances in In elligen Sys ems and Compu ing, Volume 1365 AIST, 123–135 [2021 Wo ld Con e ence on In o ma ion Sys ems and Technologies, Wo ldCIST 2021] Sp inge , Cham. h ps://doi.o g/10.1007/978-3-030-72657-7_12. B a o, J. M., Ayuso, M., Holzmann, R., Palme , E. (2021). Add essing he Li e Expec ancy Gap in 38 Pension Policy. Insu ance: Ma hema ics and Economics, 99, 200-221. h ps://doi.o g/10.1016/j.insma heco.2021.03.025. Byanjanka , A. (2017). P edic ing c edi isk in Pee - o-Pee lending wi h su i al analysis. 2017 IEEE Symposium Se ies on Compu a ional In elligence (SSCI), 1–8. Byanjanka , A., Heikkilä, M., & Mezei, J. (2015). P edic ing c edi isk in pee - o-pee lending: A neu al ne wo k app oach. 2015 IEEE Symposium Se ies on Compu a ional In elligence, 719–725. Ca michael, D. (2014). Modeling de aul o pee - o-pee loans. A ailable a SSRN 2529240. Chamboko, R., & B a o, J. M. (2016). On he modelling o p ognosis om delinquency o no mal pe o mance on e ail consume loans. Risk Managemen , 18(4), 264–287. h ps://doi.o g/10.1057/s41283-016-0006-4 Chamboko, R., & B a o, J. M. (2019a). F ail y co ela ed de aul on e ail consume loans in Zimbabwe. In e na ional Jou nal o Applied Decision Sciences, 12(3), 257–270. h ps://doi.o g/10.1504/IJADS.2019.100436 Chamboko, R., & B a o, J. M. V. (2019b). Modelling and o ecas ing ecu en eco e y e en s on consume loans. In e na ional Jou nal o Applied Decision Sciences, 12(3), 271–287. h ps://doi.o g/10.1504/IJADS.2019.100440 Chamboko, R., & B a o, J. M. (2020). A Mul i-S a e App oach o Modelling In e media e E en s and Mul iple Mo gage Loan Ou comes. Risks, 8(2), 64. h ps://doi.o g/10.3390/ isks8020064 Cho zempa, M. (2018). Massi e P2P Failu es in China: Unde g ound Banks Going Unde . Pe e son Ins i u e o In e na ional Economics, 21. Re ie ed om h ps://www.piie.com/blogs/china- economic-wa ch/massi e-p2p- ailu es-china-unde g ound-banks-going-unde Co po a e Finance Ins i u e. (n.d.). Pee - o-Pee Lending - O e iew, How I Wo ks, P os & Cons. Re ie ed om h ps://co po a e inanceins i u e.com/ esou ces/knowledge/ inance/pee - o- pee -lending/ Di ick, L., Claeskens, G., & Baesens, B. (2017). Time o de aul in c edi sco ing using su i al analysis: a benchma k s udy. Jou nal o he Ope a ional Resea ch Socie y, 68(6), 652–665. Đu o ić, A. (2017). Es ima ing P obabili y o De aul on Pee o Pee Ma ke – Su i al Analysis App oach. Jou nal o Cen al Banking Theo y and P ac ice, 6(2). Emek e , R., Tu, Y., Ji asakuldech, B., & Lu, M. (2015). E alua ing c edi isk and loan pe o mance in online Pee - o-Pee (P2P) lending. Applied Economics, 47(1), 54–70. h ps://doi.o g/10.1080/00036846.2014.962222 FICO. (2018). An e olu ion in ML inno a ions ha helps bo h lende s and consume s. Re ie ed om h ps://www. ico.com/en/ esou ce-download- ile/6559 Galloway, I., & o he s. (2009). Pee - o-pee lending and communi y de elopmen inance. Communi y In es men s, 21(3), 19–23. Gonzalez, L., & Lou ei o, Y. K. (2014). When can a pho o inc ease c edi ? The impac o lende and bo owe p o iles on online pee - o-pee loans. Jou nal o Beha io al and Expe imen al Finance, 2, 44–58. G eenbaum, S. I., Thako , A. V, & Boo , A. W. A. (2019). Con empo a y inancial in e media ion. Academic P ess. 39 Ha ylchyk, O., Ma io o, C., Rahim, T.-U.-, & Ve die , M. (2016). Wha D i es he Expansion o he Pee - o-Pee Lending? SSRN Elec onic Jou nal. h ps://doi.o g/10.2139/ss n.2841316 Ha ylchyk, O., & Ve die , M. (2018). The inancial in e media ion ole o he P2P lending pla o ms. Compa a i e Economic S udies, 60(1), 115–130. He zens ein, M., And ews, R. L., Dholakia, U. M., & Lyand es, E. (2008). The democ a iza ion o pe sonal consume loans? De e minan s o success in online pee - o-pee lending communi ies. Bos on Uni e si y School o Managemen Resea ch Pape , 14(6), 1–36. He zens ein, M., Dholakia, U. M., & And ews, R. L. (2011). S a egic he ding beha io in pee - o-pee loan auc ions. Jou nal o In e ac i e Ma ke ing, 25(1), 27–36. Hosme J , D. W., Lemeshow, S., & S u di an , R. X. (2013). Applied Logis ic Reg ession (Vol. 398). John Wiley & Sons. Huang, Z., Chen, H., Hsu, C.-J., Chen, W.-H., & Wu, S. (2004). C edi a ing analysis wi h suppo ec o machines and neu al ne wo ks: a ma ke compa a i e s udy. Decision Suppo Sys ems, 37(4), 543–558. Hulme, M. K., & W igh , C. (2006). In e ne based social lending: Pas , p esen and u u e. Social Fu u es Obse a o y, 11, 1–115. Iye , R., Khwaja, A. I., Lu me , E. F. P., & Shue, K. (2009). Sc eening in new c edi ma ke s: Can indi idual lende s in e bo owe c edi wo hiness in pee - o-pee lending? AFA 2011 Den e Mee ings Pape . Jin, Y., & Zhu, Y. (2015). A da a-d i en app oach o p edic de aul isk o loan o online Pee - o-Pee (P2P) lending. 2015 Fi h In e na ional Con e ence on Communica ion Sys ems and Ne wo k Technologies, 609–613. Kä e , B. (2018). Pee - o-Pee Lending - A (Financial S abili y) Risk Pe spec i e. Re iew o Economics, 69(1), 1–25. Keys, B. J., Mukhe jee, T., Se u, A., & Vig, V. (2010). Did secu i iza ion lead o lax sc eening? E idence om subp ime loans. The Qua e ly Jou nal o Economics, 125(1), 307–362. Kla , M. (2008). Online pee - o-pee lending: a lende s’ pe spec i e. P oceedings o he In e na ional Con e ence on E-Lea ning, E-Business, En e p ise In o ma ion Sys ems, and E- Go e nmen , EEE, 371–375. Langage , C. (2019). How Is My C edi Sco e Calcula ed? Re ie ed om In es opedia websi e: h ps://www.in es opedia.com/ask/answe s/05/c edi sco ecalcula ion.asp Lee, E., & Lee, B. (2012). He ding beha io in online P2P lending: An empi ical in es iga ion. Elec onic Comme ce Resea ch and Applica ions, 11(5), 495–503. Lending Club. (2019a). Demand and c edi p o ile. Re ie ed om Lending Club websi e: h ps://www.lendingclub.com/in o/demand-and-c edi -p o ile.ac ion Lending Club. (2019b). How a e loans lis ed and app o ed o in es ing? – LendingClub. Re ie ed om Lending Club websi e: h ps://help.lendingclub.com/hc/en-us/a icles/215466748-How- a e-loans-lis ed-and-app o ed- o -in es ing- Lending Club. (2019c). Ra es & Fees. Re ie ed om Lending Club websi e: h ps://www.lendingclub.com/public/ a es-and- ees.ac ion 40 Lessmann, S., Baesens, B., Seow, H.-V., & Thomas, L. C. (2015). Benchma king s a e-o - he-a classi ica ion algo i hms o c edi sco ing: An upda e o esea ch. Eu opean Jou nal o Ope a ional Resea ch, 247(1), 124–136. Lin, M., P abhala, N. R., & Viswana han, S. (2013). Judging bo owe s by he company hey keep: F iendship ne wo ks and in o ma ion asymme y in online pee - o-pee lending. Managemen Science, 59(1), 17–35. Lus , D. (2017). Analysis o sco ing in pee - o-pee lending. Mezei, J., Byanjanka , A., & Heikkilä, M. (2018). C edi isk e alua ion in pee - o-pee lending wi h linguis ic da a ans o ma ion and supe ised lea ning. Mild, A., Wai z, M., & Wöckl, J. (2015). How low can you go? O e coming he inabili y o lende s o se p ope in e es a es on unsecu ed pee - o-pee lending ma ke s. Jou nal o Business Resea ch, 68(6), 1291–1305. Möllenkamp, N. (2017). De e minan s o Loan Pe o mance in P2P Lending. Uni e si y o Twen e. Nowak, A., Ross, A., & Yencha, C. (2018). Small Business Bo owing and Pee - o-Pee Lending: E idence F om Lending Club. Con empo a y Economic Policy, 36(2), 318–336. h ps://doi.o g/10.1111/COEP.12252 Olson, D. L., Delen, D., & Meng, Y. (2012). Compa a i e analysis o da a mining me hods o bank up cy p edic ion. Decision Suppo Sys ems, 52(2), 464–473. Polena, M., & Regne , T. (2018). De e minan s o bo owe s’ de aul in P2P lending unde conside a ion o he loan isk class. Games, 9(4), 82. P ospe .com. (2016). Wha is he loan e iew p ocess? How long does i ake? – Help is on he way. Re ie ed om P ospe .com websi e: h ps://p ospe .zendesk.com/hc/en- us/a icles/210013753-Wha -is- he-loan- e iew-p ocess-How-long-does-i - ake- Secu i ies and Exchange Commission. (2015). LendingClub Co p Fo m 10-K o Fiscal Yea Ended Decembe 31, 2014. Re ie ed om h ps://www.sec.go /A chi es/edga /da a/1409970/000119312515070385/d851207d10k.h m Se ano-Cinca, C., Gu ie ez-Nie o, B., & López-Palacios, L. (2015). De e minan s o de aul in P2P lending. PloS One, 10(10), e0139427. Singh, S., Tsai, K., & Ramiah, S. (2014). Pee Lending Risk P edic o . h ps://doi.o g/10.13140/2.1.4810.6567 Tan, F., Hou, X., Zhang, J., Wei, Z., Yan, Z., & Weng, S.-C. (2018). A no el isk assessmen scheme and p ac ice o pee - o-pee lending. P oc. ACM SIGKDD Wo kshop Da a Sci. Fin ech. Tapsco , D., & Williams, A. (2007). The new science o sha ing. The BusinessWeek Wikinomics Se ies. T anspa ency Ma ke Resea ch. (2016). Pee - o-Pee Lending Ma ke - Global Indus y Analysis, Size, Sha e, G ow h, T ends and Fo ecas 2016 - 2024. Re ie ed om h ps://www. anspa encyma ke esea ch.com/pee - o-pee -lending-ma ke .h ml Weiss, G. N. F., Pelge , K., & Ho sch, A. (2010). Mi iga ing ad e se selec ion in P2P lending - Empi ical e idence om p ospe . com. A ailable a SSRN 1650774. Wendle , T., & G ö up, S. (2016). Da a mining wi h SPSS modele : heo y, exe cises and solu ions. 41 h ps://doi.o g/10.1007/978-3-319-28709-6 Yum, H., Lee, B., & Chae, M. (2012). F om he wisdom o c owds o my own judgmen in mic o inance h ough online pee - o-pee lending pla o ms. Elec onic Comme ce Resea ch and Applica ions, 11(5), 469–483. Zhao, H., Ge, Y., Liu, Q., Wang, G., Chen, E., & Zhang, H. (2017). P2P lending su ey: pla o ms, ecen ad ances and p ospec s. ACM T ansac ions on In elligen Sys ems and Technology (TIST), 8(6), 72. Zhao, D., Huang, C., Wei, Y., Yu, F., Wang, M., & Chen, H. (2017). An e ec i e compu a ional model o bank up cy p edic ion using ke nel ex eme lea ning machine app oach. Compu a ional Economics, 49(2), 325–341. h ps://doi.o g/10.1007/s10614-016-9562-7 48 8.3 APPENDIX C Table 11 - Desc ip i e S a is ics o Nume ical Va iables Sou ce: Au ho ’s p oduc ion. Va iables Mean S d.De Min Median Max A e age by loan s a us Fully Paid De aul Annual Income 73,250 49,039 3,000 62,000 1,000,000 74,563 65,787 Cha ged O wi hin 12 mon hs 0.01 0.11 0 0 10 0.01 0.01 C edi His o y 16.12 7.56 1 15 71 16.25 15.40 Delinquency pas 2 yea s 0.31 0.86 0 0 30 0.31 0.34 Deb - o-Income 17.64 8.20 0 17.15 41.21 17.36 19.20 FICO 695 31 640 690 845 697 687 Inqui ies las 6 mon hs 0.70 1 0 0 17 0.67 0.88 In e es a e 12.42 4.17 5.32 12.29 28.99 12.06 14.47 Loan Amoun 13,202 8,090 500 11,000 35,000 13,172 13,372 Open Accoun s 11.31 5.22 1 10 84 11.28 11.48 Public Reco ds 0.20 0.59 0 0 86 0.19 0.23 Public Reco d Bank up cies 0.12 0.36 0 0 12 0.12 0.14 Re ol ing Balance 16,032 22,095 0 11,053 2,904,836 16,289 14,573 Re ol ing line u iliza ion a e 54.07 23.95 0 54.80 892.30 53.56 56.98 Tax Liens 0.05 0.40 0 0 85.00 0.05 0.05 W i ing Skills 1.51 3.39 0 0 10 1.50 1.53 49 Table 12 - Desc ip i e S a is ics o Ca ego ical Va iables Va iables # issued loans (%) De aul a e (%) Employmen Leng h 0 – 4 yea s 277,107 (37.8%) 15.0% 5 – 9 yea s 182,924 (25.0% 15.0% 10+ yea s 231,027 (31.5%) 13.8% Missing 41,482 (5.7%) 21.0% G ade A 156,599 (21.4%) 5.5% B 238,806 (32.6%) 11.4% C 195,344 (26.7%) 18.5% D 94,012 (12.8%) 24.2% E 34,607 (4.7%) 29.8% F 10,974 (1.5%) 34.8% G 2,198 (0.3%) 37.9% Home Owne ship Mo gage 350,431 (47.8%) 12.8% Own 73,809 (10.1%) 15.5% Ren 308,300 (42.1%) 17.3% Pu pose Ca 8,371 (1.1%) 11.9% C edi ca d 173,984 (23.8%) 12.4% Deb consolida ion 418,877 (57.2%) 15.8% Educa ional 361 (0.05%) 20.2% Home imp o emen 42,686 (5.8%) 13.2% House 3,235 (0.4%) 18.9% Majo pu chase 15,314 (2.1%) 13.3% Medical 7,999 (1.1%) 17.5% Mo ing 5,195 (0.7%) 19.5% O he 39,582 (5.4%) 17.1% Renewable ene gy 554 (0.1%) 19.7% Small business 9,317 (1.3%) 24.4% Vaca ion 4,748 (0.6%) 16.1% Wedding 2,317 (0.3%) 12.3% Te m 36 mon hs 668,970 (91.3%) 14.0% 60 mon hs 63,570 (8.7%) 25.3% Ve i ica ion S a us Sou ce Ve i ied 255,845 (34.9%) 15.1% Ve i ied 242,057 (33.0%) 18.0% No Ve i ied 234,638 (32.0%) 11.7% Sou ce: Au ho ’s p oduc ion. 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