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Boolean Model based on Boolean logic and classical set theory in that both the documents to be searched and the user's query are conceived as sets of terms. We can position any query in the form of a Boolean expression of terms where the relationships are logically combined using the Boolean operators AND, OR, and NOT. Using the Boolean operators, the terms in the query and the concerned documents can be combined to form a whole new set of documents. Queries are designed as Boolean expressions which have precise semantics. The retrieval strategy is based on binary decision criterion considers that index terms are present or absent in a document.
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(MSIT504) Tessfu G. (PhD) School of Computing Department of Computer Science Dire Dawa Institute of Technology