Semi-Automatic Domain Ontology Creation from Text Resources
Mithun Balakrishna, DAN I. MOLDOVAN, Marta Tatu, Marian Olteanu · 2010
Analysts in various domains, especially intelligence and financial, have to constantly extract useful knowledge from large amounts of unstructured or semi-structured data.Keyword-based search, faceted search, question-answering, etc. are some of the automated methodologies that have been used to help analysts in their tasks.General-purpose and domain-specific ontologies have been proposed to help these automated methods in organizing data and providing access to useful information.However, problems in ontology creation and maintenance have resulted in expensive procedures for expanding/maintaining the ontology library available to support the growing and evolving needs of analysts.In this paper, we present a generalized and improved procedure to automatically extract deep semantic information from text resources and rapidly create semantically-rich domain ontologies while keeping the manual intervention to a minimum.We also present evaluation results for the intelligence and financial ontology libraries, semi-automatically created by our proposed methodologies using freely-available textual resources from the Web.Relation Definition Code Relation Definition Code Agent(X,Y) X is the agent of Y; X is prototypically a person AGT Association(X,Y) Person X is associated with Person Y; the relation is not necessarily kinship ASO At-Location(X,Y) X is at-location Y or where X takes place AT-L At-Time(X,Y) X is at-time Y or when X takes place AT-T Cause(X,Y) X causes Y CAU Experiencer(X,Y) X is an experiencer of Y; involves cognition and senses EXP Influence(X,Y) X caused something to happen to Y IFL Instrument(X,Y) X is an instrument in Y INS Intent(X,Y) X is the intent/goal/reason of Y INT IS-A(X,Y) X is a (kind of) Y ISA Justification(X,Y) X is the reason or motivation or justification for Y JST Kinship(X,Y) X is a kin of Y; X is related to Y by blood or by marriage KIN Make(X,Y) X makes Y MAK Manner(X,Y) X is the manner in which Y happens MNR