Search query categrization into verticals

Details Search query categrization into verticals Search query categrization into verticals

2011-02-22

2011-02-22

Nguyen, Cam-Linh (Department: 2161)

Data processing: database and file management or data structures

Database and file access

Preparing data for information retrieval

C707S713000, C707S763000

Reexamination Certificate

active

07895206

ABSTRACT:
The likelihood that a query belongs to a vertical is determined. The query is assigned to a vertical based on that likelihood. A query submitted to a main search box is assigned to verticals and processed using indices specific to those verticals. The query is assigned to verticals based on coverage adjusted log likelihood per unit (CALL) values for that query in those verticals. An offline learning component computes UNITS dictionaries and learns the distributions of query units in the main search and each of the vertical searches using query logs. An online scoring and ranking component uses the query distributions and UNITS dictionaries to determine the CALL values and a likelihood of the query belonging to any vertical. The search query is then assigned to verticals based on the likelihoods. The search query is then processed by all the verticals the query is assigned to.

REFERENCES:
patent: 7603348 (2009-10-01), He et al.
patent: 7610282 (2009-10-01), Datar et al.
patent: 2006/0206306 (2006-09-01), Cao et al.
patent: 2008/0114750 (2008-05-01), Saxena et al.

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