| 摘要 |
Methods, systems, and computer program products for screening transactions. Transactions stored in a transaction database may provide a statistical basis for determining a probability of fraud for a pending transaction. The cost of fraud may be determined for each of a plurality of possible actions based on the probability of fraud, and the action that provides the lowest cost of fraud chosen. A cumulative cost of fraud may be determined for a set of transactions in the database. If taking the action with the lowest cost of fraud for the transaction would result in a higher cumulative cost of fraud, an action having the higher cost of fraud for the transaction may be chosen. The transaction may be added to the database, and the probability of fraud adjusted based on an amount of time since acceptance of the transaction. The statistical basis may be optimized based on a cost error. |
| 主权项 |
1. A method of screening transactions, the method comprising:
receiving, at a computer, first data characterizing a first transaction; determining, by the computer, a first probability that the first transaction is fraudulent based on the first data; receiving, at the computer, second data characterizing a second transaction occurring in a period of time during which a chargeback for the first transaction can be received; determining, by the computer, a second probability that the first transaction is fraudulent based on the first probability and an amount of time since acceptance of the first transaction; and determining, by the computer, a third probability that the second transaction is fraudulent based at least in part on the second data and the second probability. |
