Visa International Service Association

Other

Hossein Hamooni

Himel Dev

Hao Yang

Yuhang Wu

Yu-San Lin

Yanhong Wu

Abdullah Mueen

Provided is a method that includes determining cuisine type classifiers based on merchant data, receiving transaction data associated with each payment transaction of a plurality of payment transactions involving a plurality of merchants and a plurality of consumers; determining, with at least one processor, a plurality of cuisine type labels based on a plurality of merchant names associated with the plurality of payment transactions or a portion of the plurality of payment transactions, wherein a cuisine type label identifies a cuisine type provided by a respective merchant of the plurality of merchants; generating a merchant cuisine type model from the transaction data to determine a cuisine type label of a merchant, the merchant cuisine type model based on the transaction data, and makes an inference based on a combination of merchant or consumer features associated with a payment transaction of the plurality of payment transactions; and automatically predicting one or more cuisine type classifications using the merchant cuisine type model based on one or more payment transactions associated with a consumer. A system and a computer program product are also disclosed.

System, method, and computer program product to determine cuisine type classifiers

Methods for detecting insider threats are disclosed. A method includes collecting server access data and application access data, based on the server access data and the application access data, determining nearest neighbors of an employee, and based on the nearest neighbors of the employee, determining a peer group of the employee, determining an average rank distance (ARD) of the nearest neighbors based on a ranking of the nearest neighbors in a plurality of time periods, identifying ARD gaps between the nearest neighbors, and generating scores corresponding to the ARD gaps between the nearest neighbors. One or more employees are identified that represent an internal threat to an organization based on the scores corresponding to the ARD gaps.

Methods and systems for peer grouping in insider threat detection

This disclosure describes technologies for pattern matching in data streams. Given one or more patterns of data, and one or more data streams, e.g., streams of measurements made by one or more sensors, this disclosure provides apparatus and techniques for identifying occurrences of the patterns in the data streams. Techniques according to this disclosure generally make use of distribution strategies, as disclosed herein, to distribute the work of pattern identification among multiple processors. Data streams may be divided into multiple segments, and patterns for identification as well as data stream segments may be distributed among the multiple processors.

Distributed pattern matching over streaming time series

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Santa Clara, CA, United States of America

Hossein Hamooni