Query expansion classifier for E-commerce

摘要

A system and method of query expansion are disclosed. A query expansion source, a query expansion candidate, and feature data for the query expansion source and the query expansion candidate are received. The feature data comprises information for a plurality of features. A determination is made as to whether the query expansion candidate qualifies as an expansion of the query expansion source based on an analysis of the information for the plurality of features. The query expansion candidate is assigned as an expanded query of the query expansion source in a query expansion dictionary in response to a determination that the query expansion candidate qualifies as an expansion of the query expansion source.

主权项

1. A system comprising:
at least one processor; and a query expansion classifier module, executable by the at least one processor, configured to:
receive a query expansion source, a query expansion candidate, and feature data for the query expansion source and the query expansion candidate, the feature data comprising information for a plurality of features, the plurality of features comprising a measure of price divergence for the query expansion source and the query expansion candidate, the measure of price divergence being a measure of similarity between a distribution of prices of item listings returned as results for a search on the query expansion source and a distribution of prices of item listings returned as results for a search on the query expansion candidate, and the measure of price divergence comprising a Student's t-statistic;determine whether the query expansion candidate qualifies as an expansion of the query expansion source based on an analysis of the information for the plurality of features; andassign the query expansion candidate as an expanded query of the query expansion source in a query expansion dictionary in response to a determination that the query expansion candidate qualifies as an expansion of the query expansion source.