Patent Document ID: 9317550
Application ID: 13945754

Base Claim:
1. A method comprising: obtaining a target query; and determining a normalized query according to the obtained target query, the determining including: obtaining session information in a search log; determining a vote similarity degree between a single query and the target query based on the session information, including: obtaining all queries appearing in a single session, calculating a number of votes for each query, the calculating including counting the single query appearing before the target query in the single session as a vote from the single query to the target query, and determining the vote similarity degree between the single query and the target query according to the calculated number of votes; determining a correlation degree between the single query and the target query based in part on the vote similarity degree; and determining the normalized query based in part on the correlation degree between the single query and the target query.

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Claim 2:
2. The method as recited in claim 1 , further comprising using the normalized query as an expansion term of the obtained target query.