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 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.