31. The computer readable storage device of claim 30 , the respective weight values and confidence levels used for ranking the search results and for federation, the federation comprising: evaluating, based at least in part on at least one of the algorithmic intent determination or the list-match intent determination, one or more search queries using two or more data sources in parallel; and determining whether to send at least one of the one or more evaluated search queries to at least one of an encyclopedic provider, a news provider, a travel provider, a document serving provider, or a phone directory provider.
31. The computer readable storage device of claim 30 , the respective weight values and confidence levels used for ranking the search results and for federation, the federation comprising: evaluating, based at least in part on at least one of the algorithmic intent determination or the list-match intent determination, one or more search queries using two or more data sources in parallel; and determining whether to send at least one of the one or more evaluated search queries to at least one of an encyclopedic provider, a news provider, a travel provider, a document serving provider, or a phone directory provider. 32. The computer readable storage device of claim 31 , at least one of a first weight value or a first confidence level assigned to a first keyword term not comprising an attached query augmentation term, at least one of a second weight value or a second confidence level assigned to a second keyword term comprising an attached query augmentation term, at least one of the first weight value or the first confidence level indicative of a first level of importance of the first keyword term, at least one of the second weight value or the second confidence level indicative of a second level of importance of the second keyword term, the first level of importance one of less than or greater than the second level of importance.