International Business Machines Corporation
Iteratively expanding concepts

Abstract:

Aspects of the invention include a method for iteratively expanding concepts. The method includes building a set of expressions extracted from an ontology to form a cache, the set of expressions based at least in part on respective target concepts. Receiving a document and performing a first traversal of the document to identify first surface forms related to the respective target concepts. Performing a second traversal of the document to identify second surface forms that modify the first surface forms. Annotating the document by comparing the modifying surface forms to target concepts and the set of expressions in the cache.