Generating ranked search results using linear and nonlinear ranking models
AssigneeAlibaba Group Holding Limited
InventorsNing Guo, Fei Xing, Yuheng Xie, Lei Hou, Qin Zhang
Life of this patent
Estimating the term…
Abstract
Generating ranked search results includes receiving a plurality of matching information items that match a search request, ranking at least some of the plurality of matching information items using a linear ranking model that linearly combines a first plurality of feature values to obtain a first set of ranked results, ranking at least some of the first set of ranked results using a nonlinear ranking model that nonlinearly combines a second plurality of feature values to obtain a second set of ranked results, and provide a search response based on the second set of ranked results.
Claims22
(canceled)
A system, comprising:
- a first unit configured to obtain a first set of ranked results by using a first ranking model to determine first rank scores corresponding to respective ones of at least some of a plurality of matching information items;
- a second ranking unit configured to:
- receive the first set of ranked results from the first ranking unit;
- and
- obtain a second set of ranked results by using a second ranking model to determine second rank scores corresponding to respective ones of at least some of the first set of ranked results;
- and
- a result generating unit configured to generate a search response based at least in part on the second set of ranked results.
A method, comprising:
- obtaining a first set of ranked results by using a first ranking model to determine first rank scores corresponding to respective ones of at least some of a plurality of matching information items;
- obtaining a second set of ranked results by using a second ranking model to determine second rank scores corresponding to respective ones of at least some of the first set of ranked results;
- and
- generating a search response based at least in part on the second set of ranked results.
Dependencies are inferred from the claim text.