Determining resource quality based on resource competition

摘要

Methods, systems, and apparatus for determining resource quality based on resource competition. In an aspect, a method comprises: for each of a plurality of resource locators: generating first value for the resource locator that indicates, for a plurality of first sets of search results that each include the resource locator, a number of occurrences of other resource locators that were impressed and not selected when the resource locator was selected; generating a second value for the resource locator that indicates, for a plurality of second sets of search results that each include the resource locator, a number of occurrences of other resource locators that were selected when the resource locator was impressed and not selected; and generating, based on a difference between the first value and the second value, an adjustment factor for the resource locator for adjusting a score associated with the resource locator during a search operation.

主权项

1. A computer implemented method performed by data processing apparatus, the method comprising:
for each of a plurality of resource locators:
generating a first value for the resource locator that indicates, for a plurality of first sets of search results, wherein each first set was provided in response to a query and each first set includes the resource locator, a number of occurrences of other resource locators that were displayed with the resource locator and not selected when the resource locator was displayed and selected;generating a second value for the resource locator that indicates, for a plurality of second sets of search results, wherein each second set was provided in response to the query and each second set includes the resource locator, a number of occurrences of other resource locators that were selected when the resource locator was displayed with the other resource locators and not selected; andgenerating, for the search query and based on a difference between the first value and the second value, an adjustment factor for the resource locator for adjusting a score associated with the resource locator during a search operation for the search query.