Selection and display of online content items

摘要

This specification describes technologies relating to displaying online content. In general, one aspect of the subject matter described in this specification can be embodied in methods that include receiving a first query associated with a user request. The methods may further include determining a score for a word in the first query based at least in part on user interaction with a content item served for display in response to a past query that includes the word. The methods may further include selecting a keyword derived from the first query based at least in part on the score. The methods may further include identifying candidate content items using the selected keyword. Other embodiments of this aspect include corresponding systems, apparatus, and computer program products.

主权项

1. A method performed by one or more data processing apparatus, the method comprising:
receiving a first query associated with a user request; determining a score for a word in the first query based at least in part on a first count of activities representing user interaction with content items served for display in response to a past query that included the word and a second count of activities representing user interaction with content items served for display in response to another past query that did not include the word; selecting a keyword derived from the first query based at least in part on the score; and identifying candidate content items using the selected keyword.