Research Article
Optimizing the Borrowing Limit and Interest Rate in P2P System: From Borrowers’ Perspective
Table 1
Parameters of borrowers in the PPdai lending platform.
| Dimensions’ definition | Parameters’ definition | Parameter type | Abbreviation | Remark |
| Identity information (IDI) | Head portrait | Binary | HPT | | Gender | Binary | GED | Male = true, female = false | Identity | Binary | IDT | True if identified as a lender, online seller, student, and so on | Age | Numeric | AGE | | Registration time | Numeric | RET | Number of days since registration | Profile score | Numeric | PRS | A score based on additional information (e.g., age, education, work, and income) | Borrowing information (BRI) | Amount | Numeric | AMT | Yuan | Rate | Numeric | RAT | | Period | Numeric | PED | Months | Certification information (CFI) | Identity certification | Binary | IDC | | Video certification | Binary | VDC | | Education certification | Binary | EDC | | Mobile phone certification | Binary | MPC | | Online banking recharge certification | Binary | ORC | | Historical transaction information (HTI) | Transaction score | Numeric | TAS | Times of paying off loans (1 point each time) | Transaction lost score | Numeric | TLS | Times of paying back loans delaying over 15 days (−2 points each time) | Risk rating information (RRI) | Magic-Mirror rating | Categorical | MMR | From AAA to F (8 levels) |
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