US Patent 9471606 Obtaining information to provide to users

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for obtaining information to provide to users. One of the methods includes receiving a plurality of entities for a first user, wherein each of the plurality of entities is associated with a first score, wherein the first score associated with a particular entity represents a level of confidence that the first user is interested in the particular entity; and for one or more first entities of the plurality of entities: determining a second score based on the first score for the entity, wherein the second score indicates a level of confidence that the first user should receive notifications associated with the entity; determining that the second score satisfies a threshold; obtaining information associated with the entity; and providing the information to be presented in the form of a notification to the first user.