Patent Document ID: 8515980
Application ID: 12838307

Base Claim:
1. A computer-implemented method comprising: processing a query to identify, a set of item listings, each item listing associated with an item or service being offered for sale and assigned to a leaf-level category; obtaining for the query a click probability score for each leaf-level category to which an item listing satisfying the query has been assigned, the click probability score for a particular leaf-level category derived by dividing a number of clicks for the particular leaf-level category by the total number of clicks for all leaf-level categories to which an item listing satisfying the query has been assigned; identifying up to a predetermined number of leaf-level categories with click probability scores exceeding a threshold score; for each of the identified leaf-level categories, calculating a category boost score for use in determining the order in which the item listings are to be presented in a search results page; and presenting a search results page with the item listings ordered based in part on the category boost score for the leaf-level category, to which each item listing is assigned.

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Claim 6:
6. The computer-implemented method of claim 1 , wherein the click probability score for each category-represents a probability, for a particular query, that an item listing assigned to the category will be selected from a search results page, the click probability score for each category derived based on analysis of historical click data.