Google Inc.

Per Bjornsson

Steven D Baker

Srinivasan Venkatachary

Yi Liu

Robert Andrew Brennan

Massimiliano Ciaramita

Hadar Shemtov

Ioannis Tsochantaridis

Nitin Kumar Gupta

Jun Xu

Paul Haahr

Trevor D Strohman

Gabriel Schine

Diego Federici

Adam Sadovsky

Jay Shrauner

Lingkun Chu

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for scoring candidate answer passages. In one aspect, a method includes receiving a query determined to be a question query that seeks an answer response and data identifying resources determined to be responsive to the query; for a subset of the resources: receiving candidate answer passages; determining, for each candidate answer passage, a query term match score that is a measure of similarity of the query terms to the candidate answer passage; determining, for each candidate answer passage, an answer term match score that is a measure of similarity of answer terms to the candidate answer passage; determining, for each candidate answer passage, a query dependent score based on the query term match score and the answer term match score; and generating an answer score that is a based on the query dependent score.

Scoring candidate answer passages

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for generating candidate answer passages. In one aspect, a method includes receiving a query determined to be a question query data identifying resources determined to be responsive to the query; for each resource in a top-ranked subset of the resources: identifying a plurality of passage units in the resource; applying a set of passage unit selection criterion to the passage units, each passage unit selection criterion specifying a condition for inclusion of a passage unit in a candidate answer passage, wherein a first subset of passage unit selection criteria applies to structured content and a second subset of passage unit selection criteria applies to unstructured content; and generating, from passage units that satisfy the set of passage unit selection criterion, a set of candidate answer passages.

Candidate answer passages

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for evaluating resource selection processes. One method includes receiving test queries and generating a first group of resources corresponding to a first automated resource selection process and generating a second group of resources corresponding to a second automated resource selection process for each query. Another method includes generating a query results table for use in generating the groups of resources. The query results table maps queries to resources matched to the queries, and maps each resource to a respective score for the resource and the query, and one or more index selection signals for the resource.

Automated resource selection process evaluation

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Per Bjornsson