Concepts upgrading method of domain ontology based on semantic similarity
Dong Liu · Jisuanji gongcheng yu sheji · 2011
The information is changed fast on the Intenet,so the knowledge on the ontology often can not really meet the user’s requi-rement.Therefore,an ontology renewable method is proposed,which can insert new keywords into a corresponding constructed ontology.The novel method uses LSA,latent semantic analysis,to strengthen the semantic characteristic of keywords and transforms the LSA matrix to a high dimensional space based on collected web pages.The similar values between keywords and concepts are gotten by comparing the high dimension keyword to the corresponding constructed ontology concepts.If a keyword has highest similarity value between it and one of concepts on the domain and similarity value less than a threshold,the keyword will be inserted into the offspring of the concept on the domain ontology.The primary experiment results indicated the method is useful.