1. A method for searching data using a network device in communication with a client device, comprising: receiving, from the client device, one or more search terms; determining at least one concept based on an analysis of the one or more search terms; identifying one or more concept-specific data sources over which to perform searches based on the at least one concept; performing a search over each of the one or more concept-specific data sources based at least on the search term to generate a plurality of clusters, search results from each concept-specific data source comprising a different cluster in the plurality of clusters; determining a relevance score for each result within each cluster based on user specific contextual data for a user of the client device; for each cluster in the plurality of clusters, employing at least the relevance scores of each result within the respective cluster to determine a respective cluster score; generating an ordered listing of each of the plurality of clusters based on the respective cluster scores; and displaying at the client device at least a portion of the ordered plurality of clusters.
1. A method for searching data using a network device in communication with a client device, comprising: receiving, from the client device, one or more search terms; determining at least one concept based on an analysis of the one or more search terms; identifying one or more concept-specific data sources over which to perform searches based on the at least one concept; performing a search over each of the one or more concept-specific data sources based at least on the search term to generate a plurality of clusters, search results from each concept-specific data source comprising a different cluster in the plurality of clusters; determining a relevance score for each result within each cluster based on user specific contextual data for a user of the client device; for each cluster in the plurality of clusters, employing at least the relevance scores of each result within the respective cluster to determine a respective cluster score; generating an ordered listing of each of the plurality of clusters based on the respective cluster scores; and displaying at the client device at least a portion of the ordered plurality of clusters. 3. The method of claim 1 , the method further comprising: determining user specific contextual data from at least one of the following: a location of the client device used to submit the search term, an application program used by the client device to submit the search term, a data type of a search result currently being displayed by the client device, a web page through which the search term was submitted, a tracked behavior of the user of the client device, and demographic data.