Ontological Concept Extraction Method Based on Maximum Entropy Model
Miao Yan-jun · Jisuanji gongcheng · 2009
Ontology is the core of the semantic retrieval.Ontology construction mainly includes concept extraction and the extraction of relationship between concepts,and the concept extraction is the base of ontology construction.In this paper,the domain-specific concepts are extracted by the approach which is based on the maximum entropy model,the base noun phrases are mined from the texts in the field,the domain-specific phrases are extracted from the phrases,and the phrases to form the ontology concept are corrected.Experimental results demonstrate the incensement of the accuracy and completeness of the concepts.