Portfolio Selections in P2P Lending: A Multi-Objective Perspective ∗ Hongke Zhao1 Qi Liu1 Guifeng Wang1 Yong Ge2 Enhong Chen1 1School of Computer Science and Technology, University of Science and Technology of China {zhhk, wgf1109}@mail.ustc.edu.cn {qiliuql, cheneh}@ustc.edu.cn 2Eller College of Management, University of Arizona,
[email protected] ABSTRACT many users (i.e., borrowers and lenders) and generates mas- P2P lending is an emerging wealth-management service for sive lending transactions. For instance, the total loan is- individuals, which allows lenders to directly bid and invest on suance amount of Lendingclub had reached more than $13.4 the loans created by borrowers. In these platforms, lender- billion at the end of 2015. s often pursue multiple objectives (e.g., non-default prob- The prevalence of P2P lending and the availability of trans- ability, fully-funded probability and winning-bid probability) action data have attracted many researchers' attentions, which when they select loans to invest. How to automatically as- mainly focused on risk evaluation [23, 11], social relation sess loans from these objectives and help lenders select loan analysis [20, 13] and fully-funded analysis [28, 25]. Recently, portfolios is a very important but challenging problem. To authors in [34] proposed to study loan recommendations for that end, in this paper, we present a holistic study on portfo- lenders. However, due to the specific working mechanism of lio selections in P2P lending. Specifically, we first propose to P2P lending, the problem of loan/investment recommenda- adapt gradient boosting decision tree, which combines both tions in these platforms is still largely underexplored.