The invention provides an ontology concept-based lexical semantic similarity solving method, which comprises the steps of mapping to-be-compared words input in a statistical method module into an ontology concept; selecting ontology concepts, with corresponding maximum depths, of the to-be-compared words from an ontology concept module, calculating the distance between the ontology concepts and calculating the most recent common ancestor depth; and finally calculating the similarity between the two to-be-compared words. The ontology concept-based lexical semantic similarity solving method is closer to an empirical value of an expert in quantitative concept; the factors of the distance between the ontology concepts, with the corresponding maximum depths, of the to-be-compared words (c1, c2), the depths and the like are more fully and comprehensively considered, so that the accuracy of the semantic similarity result is greatly improved; and the ontology reasoning effect is better improved.
Ontology concept-based lexical semantic similarity solving method