Research of Agricultural Ontology and Ontology Learning

At present the research of ontology learning is a trend in the world.The manual construction of ontology exists fatal demerits,so it is an effective way of large scale ontology development to construct the ontology semiautomatically or automatically by ontology learning.In this paper the key theories of ontology and ontology learning are presented,status quo about the research of agriculture ontology in China and abroad is surveyed.The main process and key technologies of agriculture ontology learning are given.Extracting concept based on statistics,latent semantic retrieval and association rules algorithm.Extracting concept based on pattern matching and clustering algorithm.Some popular ontology learning tools are especially introduced.Evaluation methods about the result of ontology learning are simply analyzed.