9. A system for managing data over a network, comprising: a modeling system server computer, comprising: a transceiver that is operative to communicate over the network; a memory that is operative to store at least instructions; and a processor device that executes instructions that perform actions, including: providing source data to the modeling system server computer from at least one separate data source; providing a plurality of particular types of indices that are separate and optimized for one or more different content-types, wherein the particular types of indices include one or more of n-gram indices, temporal indices, or geo-spatial indices; generating a raw data graph from the source data, wherein the structure of the raw data graph is based on the structure of the source data; mapping one or more elements of the raw data graph to a concept graph; generating one or more concept instances based on at least the concept graph, the raw data graph, and the source data; generating one or more model-identifiers (MIDs) that correspond to the one or more concept instances, wherein the one or more MIDs include at least a path in the concept graph and one or more value keys that correspond to one or more portions of the source data; indexing values from the source data that correspond to the one or more MIDs in one or more indices that are selected from the plurality of indices based on a content-type of the source data that is associated with the one or more MIDs; and responsive to a query, generating a result set that includes one or more result MIDs based on one or more indices of the plurality of indices, wherein a content-type of at least one portion of the query is employed to select the one or more indices used to generate the result set; and a source data server computer, comprising: a transceiver that is operative to communicate over the network; a memory that is operative to store at least instructions; and a processor device that executes instructions that perform actions, including: providing the source data to the modeling system server computer.
9. A system for managing data over a network, comprising: a modeling system server computer, comprising: a transceiver that is operative to communicate over the network; a memory that is operative to store at least instructions; and a processor device that executes instructions that perform actions, including: providing source data to the modeling system server computer from at least one separate data source; providing a plurality of particular types of indices that are separate and optimized for one or more different content-types, wherein the particular types of indices include one or more of n-gram indices, temporal indices, or geo-spatial indices; generating a raw data graph from the source data, wherein the structure of the raw data graph is based on the structure of the source data; mapping one or more elements of the raw data graph to a concept graph; generating one or more concept instances based on at least the concept graph, the raw data graph, and the source data; generating one or more model-identifiers (MIDs) that correspond to the one or more concept instances, wherein the one or more MIDs include at least a path in the concept graph and one or more value keys that correspond to one or more portions of the source data; indexing values from the source data that correspond to the one or more MIDs in one or more indices that are selected from the plurality of indices based on a content-type of the source data that is associated with the one or more MIDs; and responsive to a query, generating a result set that includes one or more result MIDs based on one or more indices of the plurality of indices, wherein a content-type of at least one portion of the query is employed to select the one or more indices used to generate the result set; and a source data server computer, comprising: a transceiver that is operative to communicate over the network; a memory that is operative to store at least instructions; and a processor device that executes instructions that perform actions, including: providing the source data to the modeling system server computer. 11. The system of claim 9 , wherein the plurality of indices, further includes, at least one index that is optimized for a content-type of text, at least one index that is optimized for a content-type of time, and at least one index that is optimized for a content-type of geo-spatial information.