A system, method and computer-readable medium for determining a data domain associated with data, including parsing a document to generate one or more document indexes corresponding to the document, the one or more document indexes comprising a plurality of index terms and location information, determining a syntactic confidence score corresponding to a non-dictionary term in the plurality of index terms based on a syntactic analysis of the non-dictionary term, determining a proximity confidence score corresponding to the non-dictionary term based on the location information and at least one proximity query associated with the non-dictionary term and one or more other terms in the document index, determining a semantic confidence score based on a plurality of dictionary terms in the plurality of index terms, and determining an overall confidence score corresponding to the non-dictionary term based on the syntactic confidence score, the proximity confidence score, and the semantic confidence score.