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Based on the semantic query expansion, we propose a novel approach to re-rank the query result that enables users to retrieve the required documents quickly. Our technique is different from others in that (1) ontology entries are added to the query by disambiguating word senses. (2) We propose a new algorithm to mine frequent patterns, which is used to construct semantic user focus. (3) It utilizes...
Semantic retrieval is one of keys to achieve knowledge retrieval, and it is based on the computation of semantic similarity. This paper improves the general model of conceptual semantic similarity computation by adding new elements to the model such as instances, the relationship between concepts and instances, and that between instances itself. It also presents the method of computing semantic similarity...
Through a deep understanding of the class axioms in OWL, this document works out some guidance of three class axioms respectively. The guidance will help us to construct ontology more clearly, effectively, richly, rigorous and can make the reasoning process proceed smoothly. Actually these guidance are abstracted from many ODPs (ontology design pattern). An example of an organization ontology, which...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.