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Systems Based on Inverted Files
Text Analysis and Automatic Indexing
12 other sections not shown
analysis assigned attributes automatic indexing B-tree bibliographic binary Boolean centroid Chapter character cluster consists corresponding cost data base management devices disk docu document frequency Document Retrieval document vectors employee evaluation example finite state automaton function given grammar graph identified included index terms indexing language information items information retrieval information retrieval systems information systems input inverted file inverted index John Wayne Journal linguistic measure MEDLARS ments methods natural language node nonrelevant documents nonrelevant items normally number of documents obtained occur operations output pairs particular performance phrase pointer pointer structures processor query formulations query statement query terms query-document recall and precision records relation relationships relevance feedback relevant documents relevant items represent RETREL Salton search requests semantic sentence shown in Fig similarity similarity matrix specific Staran storage stored string structure syntactic Table term weights TERMlk thesaurus tion transformational grammar trieval values vectors word stems