Features of information retrieval system
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The characteristics are identified from the descriptions of 23 IR( Information Retrieval ) systems. Four IR models are discussed: the Boolean model, the vector model, the probabilistic model and the Connectionistic model. Twelve other characteristics of IR models are identified: search intermediary, domain knowledge, relevance feedback, natural language interface, graphical query language, conceptual queries, full-text IR, field searching, fuzzy queries, hyptertext integration, machine learning, and ranked output. Finally, the relevance of IR systems for the World Wide Web is established.
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