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Modifying search result ranking based on implicit user feedback

  • US 10,229,166 B1
  • Filed: 10/25/2017
  • Issued: 03/12/2019
  • Est. Priority Date: 11/02/2006
  • Status: Active Grant
First Claim
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1. A system comprising:

  • one or more computers and one or more storage devices on which are stored instructions that are operable, when executed by the one or more computers, to cause the one or more computers to perform operations comprising;

    maintaining, in a result selection log, data regarding users'"'"' interactions with search results from an Internet search engine for multiple users, each log entry in the result selection log for an actual interaction being specific to one interaction and including data identifying a respective user, a query submitted by the user, one or more search results presented by the search engine in response to the query, a document selected by the user from among the search results, an ordinal position in a presentation order of the search results of the search result selected by the user, a time the user spent on the document, a language employed by the user, and a country where the user is likely located,wherein the log entries include entries identifying multiple users, multiple documents, multiple languages, and multiple countries;

    determining from the log entries in the result selection log (i) weighted-click fractions for each of multiple query-document pairs, (ii) weighted-click fractions for each of multiple query-document-language pairs, and (iii) weighted-click fractions for each of multiple query-document-language-country pairs, wherein each weighted-click fraction is based on a sum of a weighted number of documents selected by the user, and each weight is based on how much time the user spent on the document; and

    modifying an information retrieval score in the Internet search engine for a specific document by applying one of the weighted-click fractions or a transform of the one of the weighted-click fractions to the information retrieval score for the specific document.

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