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:
Feb. 22, 2011
Filed:
Mar. 05, 2008
Vijay K. Narayanan, Mountain View, CA (US);
Jiangyi Pan, Fremont, CA (US);
Vijay K. Narayanan, Mountain View, CA (US);
Jiangyi Pan, Fremont, CA (US);
Yahoo! Inc., Sunnyvale, CA (US);
Abstract
The likelihood that a query belongs to a vertical is determined. The query is assigned to a vertical based on that likelihood. A query submitted to a main search box is assigned to verticals and processed using indices specific to those verticals. The query is assigned to verticals based on coverage adjusted log likelihood per unit (CALL) values for that query in those verticals. An offline learning component computes UNITS dictionaries and learns the distributions of query units in the main search and each of the vertical searches using query logs. An online scoring and ranking component uses the query distributions and UNITS dictionaries to determine the CALL values and a likelihood of the query belonging to any vertical. The search query is then assigned to verticals based on the likelihoods. The search query is then processed by all the verticals the query is assigned to.