System Dynamics Models of Online Lending Platform Based on Vensim Simulation Technology and Analysis of Interest Rate Evolution Trend
Table 2
Parameter assignment and description.
SN
Parameter name
Variable name
Variable value
Description
1
Average loan amount
50000 yuan
The average loan amount of all borrowers on the platform is 50000 yuan
2
Average investment amount
50000 yuan
The average investment amount of all investors on the platform is 50000 yuan
3
Benchmark interest rate
10%
The platform sets the recommended interest rate
4
Platform cost rate
3%
The platform sets the cost rate
5
Minimum interest rate
7%
The platform sets the minimum investment interest rate
6
Highest interest rate
18%
The platform sets the highest investment interest rate
7
Coefficient of investment
0.5
The value ranges from 0 to 1, indicating the proportion of the investment registrants participating in the actual investment
8
Investment policy regulation coefficient
0
The value range is [−1, 1]. A value less than 0 indicates that the policy has a negative impact on investors, which leads to a decrease in investors; a value greater than 0 indicates that the policy has a positive impact on investors, which leads to an increase in the number of investors. A value of 0 indicates no impact on investors
9
Investor registration coefficient
0.03
The value ranges from 0 to 1, which indicates the proportion of investment followers who become registrants
10
Satisfied borrower coefficient
0.5
The value range [0-1] represents the proportion of borrowers who are satisfied with the service of the platform
11
Online lending borrowing policy coefficient
0
The value range is [−1, 1]. A value less than 0 means that the policy has a negative impact on borrowers, which leads to a decrease in the number of borrowers. A value greater than 0 means that the policy has a positive impact on borrowers, which leads to an increase in the number of borrowers. A value of 0 means there is no impact on the borrowers
12
Number of general followers
10000 persons
10,000 people pay attention to the online lending platform every day (visit information related to P2P sites is available at chinaz.com)
13
Loan approval time
3 days
The time interval between an application for a loan and the approval of the loan
14
Loan review factor
0.3
The value ranges from 0 to 1, which indicates the proportion of loan applicants who are qualified for loans
15
Loan application coefficient
0.6
The value ranges from 0 to 1, which indicates the proportion of loan registrants applying for loans
16
Borrower registration coefficient
0.5
The value range is [0-1], which indicates the proportion of loan followers who register on the platform
17
Loan wait-and-see time
20 days
The time interval from the beginning of the loan wait-and-see period to registration
18
Investor satisfaction factor
0.6
The value range is [0-1], which indicates the proportion of investors who are satisfied with the platform
