Triggering application information

A non-transitory computer readable medium storing instructions that, when executed by one or more data processing apparatus, cause the one or more data processing apparatus to perform operations comprising:

• accessing, from a memory device, a hierarchical application classification for a particular application, wherein the hierarchical application classification specifies at least a main application category and an application sub-category for the particular application;
• receiving, from a client device, a submitted query;
• obtaining, for the submitted query, a set of features of the submitted query that specifies at least a main topic and a subtopic of the submitted query;
• determining that the hierarchical application classification of the particular application includes the main topic and the subtopic specified by the set of features of the submitted query received from the client device;
• and
• providing, to the client device responsive to the submitted query, data that present, within a user interface presented at the client device, information about the particular application based on the determination that the hierarchical application classification of the particular application includes the main topic and the subtopic specified by the set of features of the submitted query.

A system, comprising:

• a memory device;
• and
• one or more data processing devices configured to interact with the memory device and execute instructions, wherein execution of the instructions cause the one or more data processing devices to perform operations including:
• accessing, from the memory device, a hierarchical application classification for a particular application, wherein the hierarchical application classification specifies at least a main application category and an application sub-category for the particular application;
• receiving, from a client device, a submitted query;
• obtaining, for the submitted query, a set of features of the submitted query that specifies at least a main topic and a subtopic of the submitted query;
• determining that the hierarchical application classification of the particular application includes the main topic and the subtopic specified by the set of features of the submitted query received from the client device;
• and
• providing, to the client device responsive to the submitted query, data that present, within a user interface presented at the client device, information about the particular application based on the determination that the hierarchical application classification of the particular application includes the main topic and the subtopic specified by the set of features of the submitted query.