Systems and Methods for Self-Similarity Measure
First Claim
1. A computer-program product tangibly embodied in a non-transitory machine-readable storage medium, including instructions configured to be executed to cause a data processing apparatus to perform a method comprising:
- retrieving data from data storage of the system in connection with a transaction received at the system relating to an account, wherein the data storage includes data relating to a plurality of accounts, each of which is associated with an account owner, and wherein the collection of accounts comprises an account population;
computing a fraud score in connection with the account to which the received transaction relates, wherein the computed fraud score indicates a probability of the account being in a compromised condition;
computing a self-similarity score in response to a computed fraud score that is above a predetermined threshold, the self-similarity score comprising a similarity measure of the received transaction relative to a set of prior transactions in the data storage relating to the account, wherein the computed self-similarity score indicates similarity of the received transaction to other transactions of the account in the set of prior transactions; and
determining the suggested action based on the computed fraud score and the computed self-similarity score.
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Accused Products
Abstract
A computerized system that processes a fraud score for a financial transaction in connection with an account is computed from retrieved data to indicate a probability of the account being in a compromised condition. A self-similarity score is computed if the computed fraud score is above a predetermined threshold to indicate similarity of the received transaction to other transactions of the account in the set of prior transactions. A suggested action to authorize or decline the transaction is determined based on the computed fraud score and the computed self-similarity score.
154 Citations
39 Claims
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1. A computer-program product tangibly embodied in a non-transitory machine-readable storage medium, including instructions configured to be executed to cause a data processing apparatus to perform a method comprising:
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retrieving data from data storage of the system in connection with a transaction received at the system relating to an account, wherein the data storage includes data relating to a plurality of accounts, each of which is associated with an account owner, and wherein the collection of accounts comprises an account population; computing a fraud score in connection with the account to which the received transaction relates, wherein the computed fraud score indicates a probability of the account being in a compromised condition; computing a self-similarity score in response to a computed fraud score that is above a predetermined threshold, the self-similarity score comprising a similarity measure of the received transaction relative to a set of prior transactions in the data storage relating to the account, wherein the computed self-similarity score indicates similarity of the received transaction to other transactions of the account in the set of prior transactions; and determining the suggested action based on the computed fraud score and the computed self-similarity score. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A risk assessment computer system, the risk assessment computer system comprising:
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a processor; and a non-transitory computer-readable storage medium that includes instructions that are configured to be executed by the processor such that, when executed, the instructions cause the risk assessment computer system to perform operations including; retrieving data from data storage of the system in connection with a transaction received at the system relating to an account, wherein the data storage includes data relating to a plurality of accounts, each of which is associated with an account owner, and wherein the collection of accounts comprises an account population; computing a fraud score in connection with the account to which the received transaction relates, wherein the computed fraud score indicates a probability of the account being in a compromised condition; computing a self-similarity score in response to a computed fraud score that is above a predetermined threshold, the self-similarity score comprising a similarity measure of the received transaction relative to a set of prior transactions in the data storage relating to the account, wherein the computed self-similarity score indicates similarity of the received transaction to other transactions of the account in the set of prior transactions; and determining the suggested action based on the computed fraud score and the computed self-similarity score. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method of operating a risk assessment computer system, the method comprising:
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retrieving data from data storage of the system in connection with a transaction received at the system relating to an account, wherein the data storage includes data relating to a plurality of accounts, each of which is associated with an account owner, and wherein the collection of accounts comprises an account population; computing a fraud score in connection with the account to which the received transaction relates, wherein the computed fraud score indicates a probability of the account being in a compromised condition; computing a self-similarity score in response to a computed fraud score that is above a predetermined threshold, the self-similarity score comprising a similarity measure of the received transaction relative to a set of prior transactions in the data storage relating to the account, wherein the computed self-similarity score indicates similarity of the received transaction to other transactions of the account in the set of prior transactions; and determining the suggested action based on the computed fraud score and the computed self-similarity score. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification