Abstract: A method includes acquiring application data for applications. The application data specifies an application category and includes application words that describe the application. The method includes determining, for each application word, a global fraction value that indicates the fraction of applications with the application word, a category fraction value that indicates the fraction of applications in the category with the application word, and a ratio value that indicates the ratio of the category fraction value to the global fraction value. The method includes classifying application words as categorical words when the ratio value is greater than a ratio threshold. The method includes identifying similar applications and setting categorical words as categorical search keywords for applications when the categorical words are in greater than a threshold number of similar applications.

Abstract: A method includes storing entity records that include entity information that describes an entity and an application link that accesses an application state associated with the entity. The method includes receiving event data from user devices that indicates a number of times each of the application states was accessed by the user devices. The method includes determining a popularity score for each entity record based on the received event data, wherein the popularity score indicates the number of times the application state for the entity record was accessed relative to the number of times other application states were accessed. The method includes identifying a set of preliminary result entity records based on a search request, generating result scores for each of the preliminary result entity records based on the popularity scores, and generating search results that include application links from the preliminary result entity records.

Abstract: A method includes acquiring application data for applications. The application data specifies an application category and includes application words that describe the application. The method includes determining, for each application word, a global fraction value that indicates the fraction of applications with the application word, a category fraction value that indicates the fraction of applications in the category with the application word, and a ratio value that indicates the ratio of the category fraction value to the global fraction value. The method includes classifying application words as categorical words when the ratio value is greater than a ratio threshold. The method includes identifying similar applications and setting categorical words as categorical search keywords for applications when the categorical words are in greater than a threshold number of similar applications.