Domain ontology construction based on semantic relation information of terminology

Ontology is an explicit specification of a conceptualization. That is, ontology is a description of the concepts and relationships that can exist for an agent or a community of agents. This study suggests a method of constructing domain ontology using terminology processing and applies the method to document retrieval. In order to construct ontology, if proposes an algorithm that classifies the patients of nouns and suffices which compose terminology, in domain texts, extracts terminology, and build a hierarchical structure. The experiment used documents related to pharmacy, and the algorithm showed accuracy of 92.57% for singleton terms and 66.64% for multi-word terms on the average. Constructed ontology, which forms natural groups of senses centering on specific nouns or suffices composing the terminology with semantic information, can be utilized in approaching the knowledge of special areas such as document retrieval. According to the result of document retrieval based on the constructed ontology, the system improved in precision and recall compared to traditional keyword-based document retrieval.