自學(xué)考試網(wǎng)上學(xué)習(xí)社區(qū)中交互式答疑系統(tǒng)的設(shè)計和實現(xiàn)
[Abstract]:The construction of interactive question answering system is a complex system with many functions. The focus of the research is how to improve the intelligence of machine answering and the seamless link between machine answering and manual answering. An important aspect of improving the intelligence of machine answering questions is to enable the system to accurately understand the problems raised by learners. For this reason, on the one hand, the ability of the system to Chinese word segmentation can be improved by improving the Chinese word segmentation device, on the other hand, By constructing the subject concept ontology database, we can improve the ability of understanding Chinese semantics. The seamless link between machine answering and manual answering can automatically forward the problems that can not be solved in machine answering to the manual answering module through the backstage statistical record and the function of connecting with each other. According to the type of question, the manual answering module selects the corresponding teachers to answer questions manually. The result of manual answer will be fed back to machine answering module to improve the capacity of machine answering module. According to the functional requirements of the answering system and the actual retrieval requirements of the self-examinees, the Chinese word partitioning device of Lucene, the full-text search engine, is rewritten. In order to construct the resource index, the system uses the subject ontology database and the word base of Lucene to segment the words simultaneously, and then establishes the index for the segmented words. When retrieving resources, the answering system first uses the concepts in the ontology library to segment the contents entered by the user, and then, according to these segmented keywords, looks up the relevant contents in the indexes of each knowledge base of the system, and then, Then the user's input is segmented by using Lucene's own word partitioning device, and then the key words after segmentation are used to search the relevant contents in the index database. Finally, the retrieval system combines the results of the two searches. The results of the concept lookup using the subject ontology library are ranked first, and the resources found by the keywords partitioned by the Luence particifier are presented to the searcher at the end.
【學(xué)位授予單位】:電子科技大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2012
【分類號】:TP311.52
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