The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 10, 2015
Filed:
Feb. 23, 2012
Rui Zhang, San Francisco, CA (US);
Kurt E. Partridge, Palo Alto, CA (US);
James M. A. Begole, Los Altos, CA (US);
Robert R. Price, Palo Alto, CA (US);
Rui Zhang, San Francisco, CA (US);
Kurt E. Partridge, Palo Alto, CA (US);
James M. A. Begole, Los Altos, CA (US);
Robert R. Price, Palo Alto, CA (US);
PALO ALTO RESEARCH CENTER INCORPORATED, Palo Alto, CA (US);
Abstract
A recommender system uses an activity decision tree to model the changes in a user's behavior according to a plurality of time-related features. The system determines historical activities for the user, and generates a decision tree for the user's historical activities. Each leaf node of the decision tree is associated with an activity-prediction model that computes a probability for a corresponding activity. The system selects a path of the decision tree from a root node to a leaf node of the decision tree based on a target time. The selected path traverses two or more non-leaf nodes that are each associated with a temporal decision model that compares the target time against a temporal classifier. The system then determines a probability for a user activity based on an activity-prediction model of the selected path.