29. A method for ontology driven data mining implemented at an informatics system coupled to a plurality of data sources, comprising: receiving an input from one or more of the plurality of data sources; creating a graph representation of the input; obtaining a graph representation of a domain ontology, wherein the domain ontology comprises a set of concepts and a set of relationships and the domain ontology comprises a Simple Knowledge Organization System (SKOS) representation of the unified medical language system (UMLS); mapping the graph representation of the input to the graph representation of the domain ontology to create a unified graph comprising the graph representation of the input and the graph of the domain ontology; constructing a survey based on a survey ontology, including adding concepts to the survey ontology, wherein the added concepts are mapped to the domain ontology; constructing a query based on at least one of the set of concepts or at least one of the set of relationships of the domain ontology; and searching the unified graph based on the query to obtain data of the input associated with at least one concept or the at least one relationship.
29. A method for ontology driven data mining implemented at an informatics system coupled to a plurality of data sources, comprising: receiving an input from one or more of the plurality of data sources; creating a graph representation of the input; obtaining a graph representation of a domain ontology, wherein the domain ontology comprises a set of concepts and a set of relationships and the domain ontology comprises a Simple Knowledge Organization System (SKOS) representation of the unified medical language system (UMLS); mapping the graph representation of the input to the graph representation of the domain ontology to create a unified graph comprising the graph representation of the input and the graph of the domain ontology; constructing a survey based on a survey ontology, including adding concepts to the survey ontology, wherein the added concepts are mapped to the domain ontology; constructing a query based on at least one of the set of concepts or at least one of the set of relationships of the domain ontology; and searching the unified graph based on the query to obtain data of the input associated with at least one concept or the at least one relationship. 31. The method of claim 29 , wherein the survey is a graph representation of a set of questions mapped to the survey ontology.