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:
Aug. 23, 2011
Filed:
Feb. 05, 2008
Karolina Buchner, San Jose, CA (US);
Ralph Rabbat, Palo Alto, CA (US);
Karolina Buchner, San Jose, CA (US);
Ralph Rabbat, Palo Alto, CA (US);
Yahoo! Inc., Sunnyvale, CA (US);
Abstract
A blended query rewrite provider takes as an input a search query and produces a list of query rewrite suggestions. The blended query rewrite provider generates suggestions by applying a number of individual query rewrite providers in series to a query. The sequence in which query rewrite providers are applied to a query is encoded in a query rewrite policy. Policies differ between query types. A policy application engine component selects which policy to apply to a given query based on the cluster to which a query belongs. The policy application engine uses a machine learning algorithm to assign a query to a cluster based on query features. The policy generation engine generates policies and trains the clustering algorithm used by the policy application engine offline based on training data sets and query logs.