Yahoo! Inc.

Yoshiyuki Inagaki

Yi Chang

Ciya Liao

Zhaohui Zheng

Anlei Dong

Narayanan Sadagopan

Georges-Eric Albert Marie Robert Dupret

In one embodiment, access one or more query chains, wherein each one of the query chains comprises two or more search queries, {q, . . . , q}, which are recency-sensitive, are related to the same subject matter, and are issued to a search engine sequentially, and actual click-through information associated with each one of the query chains; and smooth each one of the query chains using the actual click-through information associated with the query chain. To smooth one of the query chains comprises, for each one of search queries, q, in the query chain, where 2&#x2266;j&#x2266;n, if one of the network resources identified for qhas actually been clicked in connection with qby the corresponding one network user, then presume that the one network resource has been clicked in connection with one or more search queries, q, in the query chain, where 1&#x2266;k&#x3c;j.

Session based click features for recency ranking

In one embodiment, access one or more query-resource pairs, wherein for each one of the query-resource pairs comprising one of one or more search queries and one of one or more network resources, the one search query is recency-sensitive with respect to a particular time period, and the one network resource is identified for the one search query, and a resource-view count and a resource-click count associated with each one of the query-resource pairs; and construct one or more first click features using the resource-view counts and the resource-click counts associated with the query-resource pairs. To construct one of the first click features in connection with one of the query-resource pairs comprises determine a only-resource-click count associated with the one query-resource pair; and calculate a ratio between the only-resource-click count and the resource-view count associated with the one query-resource pair as the one first click feature.

Growing community of inventors

Sunnyvale, CA, United States of America

Yoshiyuki Inagaki