Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for determining a first count of unique queries, received by a search engine, that are categorized as referring to a particular site; determining a second count of unique queries, received by the search engine, that are associated with the particular site, wherein a query is associated with the particular site when the query is followed by a user selection of a search result that (a) was presented, by the search engine, in response to the query and (b) identifies a resource in the particular site; and determining, based on the first and second counts, a site quality score for the particular site.

Abstract: Methods, systems, and apparatus, including computer program products, for creating a mapping between topics and navigational resources are disclosed. The mapping is created based on hybrid queries having both characteristics of informational queries and navigational queries. The mapping between topics and resources can be used in scoring search results for ranking, for example. Other mappings created based on other types of hybrid queries and their applications are also disclosed.

Abstract: Methods, systems, and apparatus, including computer program products, for creating a mapping between topics and navigational resources are disclosed. The mapping is created based on hybrid queries having both characteristics of informational queries and navigational queries. The mapping between topics and resources can be used in scoring search results for ranking, for example. Other mappings created based on other types of hybrid queries and their applications are also disclosed.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for identifying points-of-interest. In one aspect, a method includes determining a location of a mobile device, and automatically identifying a point-of-interest (POI) located within a predetermined distance of the location. The method also includes providing, on a user interface of the mobile device, a rating control for allowing the user to rate the identified POI, and receiving the rating for the identified POI from the user, using the rating control.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for obtaining search results from high-quality sites. One of the methods includes receiving data identifying first resources that are responsive to a first query. If at least a first threshold number N of top-ranked first resources are located on sites previously identified as low quality sites, a second query and data identifying second resources that are responsive to the second query are obtained, wherein at least a second threshold number M of top-ranked second resources are located on sites previously identified as being high-quality sites. Search results are provided in response to the first query, wherein the search results identify one or more of the first resources and also identify a particular second resource of the second resources.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for determining a first count of unique queries, received by a search engine, that are categorized as referring to a particular site; determining a second count of unique queries, received by the search engine, that are associated with the particular site, wherein a query is associated with the particular site when the query is followed by a user selection of a search result that (a) was presented, by the search engine, in response to the query and (b) identifies a resource in the particular site; and determining, based on the first and second counts, a site quality score for the particular site.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for identifying points-of-interest. In one aspect, a method includes determining a location of a mobile device, and automatically identifying a point-of-interest (POI) located within a predetermined distance of the location. The method also includes providing, on a user interface of the mobile device, a rating control for allowing the user to rate the identified POI, and receiving the rating for the identified POI from the user, using the rating control.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for evaluating website properties by partitioning user feedback data are disclosed. In one aspect, a method includes receiving a plurality of document query pairs (D-Qs) associated with a website, partitioning the plurality of D-Qs into one or more groups according to values for a partition parameter associated with the plurality of D-Qs, evaluating a property parameter of the website based on aggregated user feedback data of the D-Qs included within at least one of the one or more groups, and providing the evaluated property parameter as an input for ranking documents from the website as result documents for searches.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for identifying points-of-interest. In one aspect, a method includes determining a location of a mobile device, and automatically identifying a point-of-interest (POI) located within a predetermined distance of the location. The method also includes providing, on a user interface of the mobile device, a rating control for allowing the user to rate the identified POI, and receiving the rating for the identified POI from the user, using the rating control.