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Query expansion has been considered as an effective technique for dealing with the fundamental issue of word mismatch in information retrieval for a long time. So far researchers solve this major problem through a wide variety of query expansion techniques. We primarily discuss the query expansion based on local analysis. It includes local feedback, local context analysis (LCA) and local clustering...
Data sharing and distribution are critically significant in international astronomical research cooperation. In this study, based on scientific workflow technique, we further presented a batch data sharing system to solve the issue of batch data retrieval and sharing. The architecture and the implementation of the sharing system are presented in detail in this paper. The system fully takes advantage...
FAQ (frequently-asked question) is a good question and answer model to realize business advisory system in restricted domain. A FAQ question answering system model is presented in this paper. With the help of the idea of ontology, a knowledge base is constructed in the domain. With the help of language KDML (Knowledge Database Mark-up Language) of HowNet,the domain ontology and the relationship of...
The currently similarity computation methods of Chinese sentence and their shortcomings are analyzed at first. According to the characteristic of the Chinese question sentence, Chinese question general chunk and special chunk are defined, and then a similarity computation method of Chinese question based on chunk is proposed. In this method, the semantic similarity of words is computed on the basis...
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