Google Inc.

Oracle International Corporation

Krishnan R Subramaniam

Trystan G Upstill

Saugata Chowdhury

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for correcting potentially inaccurate terms in queries. In an aspect, a search system determines that an original query includes a potentially inaccurate term. The determination is made on the basis that the term of the original query meets an inaccuracy criterion. Derivative queries are generated from the original query. Each derivative query does not include the potentially inaccurate term. For each derivative query resources that are determined to be responsive to the derivative query are determined, and from the resources, a corrected term is determined. The corrected term is substituted for the potentially inaccurate term, and a search operation that uses the corrected query as input is performed.

Determining correction of queries with potentially inaccurate terms

A solution is provided in which regions are formed incrementally as points are added to a database. Each time a point is added to the database, it may be assigned to a new region. This new region may then be compared against each of the current set of regions until one is found with which it can be successfully merged. Then, this newly merged region may be compared against each of the other regions until one is found with which it can be successfully merged. This process repeats until there are no more regions that can be merged. Determining whether or not a region can be merged with another region may involve determining whether or not the points in one region differ from the points in the other region only along one dimension. If so, then the point can be successfully merged with the region.

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San Francisco, CA, United States of America

Krishnan R Subramaniam