Describe the main components of the IR system as shown in Figure 27.1. Figure 27.1 Document 3
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Describe the main components of the IR system as shown in Figure 27.1.
Figure 27.1
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Document 3 Documont Document Corpus SEARCH INTENT Document 1 Information Need/Search Stopword removal Stemming Keywords, Boolean, phrase, proximity, wildcard queries, etc. Preprocessing Query Formation Thesaurus Digits, hyphens, punctuation marks, cases Information extraction Conversion from humanly Query Processing understandable to intemal format Situation assessment Query expansion heuristics (users's profile, related metadata, etc.) Modeling Retrieval models Type of queries Choice of search strategy (approximate vs. exact matches, exhaustive vs. top K) Type of similarity measure Searching Indexing Mechanism Inverted index construction Index vocabulary Document statistics Index maintenance Ranking results Showing useful Retrieval Document Relevance Storing user's feedback Personalization Pattern analysis Feedback metadata Metadata External data of relevant Integration ontologies results Legend: Dashed lines indicate next iteration Figure 27.1 Generic IR framework.
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Related Book For
Fundamentals Of Database Systems
ISBN: 9780133970777
7th Edition
Authors: Ramez Elmasri, Shamkant Navathe
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