Relation Characterization Using Ontological Concepts

摘要

This paper presents a method using the concept of AND-OR tree to characterize relations, mined from MEDLINE abstracts, using biological ontology concepts. A biological relation is expressed as a binary relation associated to two molecular biology concepts as defined in the GENIA ontology. Since a biological relation may relate different pairs of biological concepts and vice-versa, the strength of a relation which reflects the relative frequency of occurrence of the specific association within the corpus, is calculated and stored in the underlying ontological structure. A biological relation along with the degree of association is termed as fuzzy biological relation.