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. 22, 2011
Filed:
Jul. 23, 2008
Arun Kejariwal, San Jose, CA (US);
Sapan Panigrahi, Castro Valley, CA (US);
Girish Vaitheeswaran, Fremont, CA (US);
Arun Kejariwal, San Jose, CA (US);
Sapan Panigrahi, Castro Valley, CA (US);
Girish Vaitheeswaran, Fremont, CA (US);
Yahoo! Inc., Sunnyvale, CA (US);
Abstract
Machine-learned ranking algorithms, e.g. for ranking search results, often use a sequence of decision trees involving decision nodes based on threshold values of features. Modules, systems and methods of optimizing such algorithms involve analyzing threshold feature values to determine threshold intervals for each feature and grouping decision trees according to the feature used in a root decision node. Then coalescing the decision trees within each group to form a coalesced group tree for each group and finally coalescing the coalesced group trees to form a coalesced tree that implements the algorithm.