Google Inc.

Claire Cui

Gaofeng Zhao

Bahman Rabii

Wei Chai

Hui Tan

Systems and methods of evaluating information in a computer network environment are provided. A data processing system can obtain or receive a content placement criterion, such as a keyword, associated with a content item and can determine a quality metric of the content placement criterion. The data processing system can identify a candidate content placement criterion and expand placement criteria associated with the content item to include the content placement criterion and the candidate content placement criterion based at least in part on an evaluation of the quality metric of the content placement criterion. The data processing system can expand placement criteria based in part on a throttling parameter. The data processing system can identify a correlation between a document and the placement criteria to identify appropriate content items for the document.

Expansion of high performing placement criteria

Systems and methods of selecting supplemental content for a document in a computer network environment. A data processing system can receive a notification of a request for a document. The data processing system can access a set of Boolean query expressions stored in association with a plurality of supplemental content records and identify a subset that are satisfied by the document. The data processing system can determine a document relevance score for each query expression in the subset. The score may be based, in part, on a feature of a document token that contributes to satisfying the respective query expression. The data processing system can select an expression from the subset based on the scores and select a supplemental content record associated with the selected Boolean query expression. The data processing system can output data for supplementing the document with a content indicated by the selected supplemental content record.

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Palto Alto, CA, United States of America

Claire Cui