Search engine

A device comprising:

• one or more processor(s);
• and
• one or more storage devices storing instructions that are operable, when executed by the one or more processors, to cause the device to perform operations comprising:
• receiving, by a search engine implemented on the device and for each of multiple native applications on the device, a set of data that is generated by the native application and that includes (i) native application content, and (ii) context information associated with the native application content;
• for each set of data that is generated by each of the multiple native applications, generating, by the search engine implemented on the device, a cluster feature-vector representation based on the set of data;
• storing, by the search engine implemented on the device, cluster feature-vector representations generated for the multiple native applications in a search engine index on the device;
• identifying, by the search engine implemented on the device and from the cluster feature-vector representations, a set of cluster feature-vector representations that are associated with a particular feature-vector representation;
• identifying, by the search engine implemented on the device and from the set of cluster feature-vector representations, one or more tasks, wherein each identified task (i) corresponds to at least one cluster feature-vector representation in the set of cluster-feature vector representations and (ii) represents a category of user activities distributed across two or more of the multiple native applications performed to achieve a related outcome;
• for each task, providing, for output, a user interface including one or more selectable controls that each identify one of the one or more tasks, and wherein each selectable control, when selected, causes the search engine to generate, in a search results page, search results that relate to the one of the one or more tasks and that are organized into groups for the respective two or more of the multiple native applications;
• receiving, by the search engine implemented on the device, data indicative of a selection of a particular selectable control of the one or more selectable controls, wherein the particular selectable control corresponds to a particular task of the one or more tasks;
• generating, by the search engine implemented on the device, in the search results page, a set of search results that relate to the particular task, wherein the set of search results are organized into separate groups for the respective two or more of the multiple native applications, wherein the search results are grouped according to which native application was used to generate the search results;
• and
• providing, by the search engine implemented on the device, the search results page for output on a display of the device.

A non-transitory computer-readable medium storing software comprising instructions executable by a computer which, upon such execution, cause the computer to perform operations comprising:

• receiving, by a search engine implemented on a user device and for each of multiple native applications on the user device, a set of data that is generated by the native application and that includes (i) native application content, and (ii) context information associated with the native application content;
• for each set of data that is generated by each of the multiple native applications, generating, by the search engine implemented on the user device, a cluster feature-vector representation based on the set of data;
• storing, by the search engine implemented on the user device, cluster feature-vector representations generated for the multiple native applications in a search engine index on the user device;
• identifying, by the search engine implemented on the user device and from the cluster feature-vector representations, a set of cluster feature-vector representations that are associated with a particular feature-vector representation;
• identifying, by the search engine implemented on the user device and from the set of cluster feature-vector representations, one or more tasks, wherein each identified task (i) corresponds to at least one cluster feature-vector representation in the set of cluster-feature vector representations and (ii) represents a category of user activities distributed across two or more of the multiple native applications performed to achieve a related outcome;
• for each task, providing, for output, a user interface including one or more selectable controls that each identify one of the one or more tasks, and wherein each selectable control, when selected, causes the search engine to generate, in a search results page, search results that relate to the one of the one or more tasks and that are organized into groups for the respective two or more of the multiple native applications;
• receiving, by the search engine implemented on the user device, data indicative of a selection of a particular selectable control of the one or more selectable controls, wherein the particular selectable control corresponds to a particular task of the one or more tasks;
• generating, by the search engine implemented on the user device, in the search results page, a set of search results that relate to the particular task, wherein the set of search results are organized into separate groups for the respective two or more of the multiple native applications, wherein the search results are grouped according to which native application was used to generate the search results;
• and
• providing, by the search engine implemented on the user device, the search results page for output on a display of the user device.