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Chapter 5: Query Operations

Chapter 5: Query Operations. Hassan Bashiri April 2009. Cross-Language. What is CLIR? Users enter their query in one language and the search engine retrieves relevant documents in other languages. English Query. French Documents. Retrieval System. Cross-Language Text Retrieval.

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632 views • 46 slides

Chapter 5: Query Operations

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481 views • 46 slides

Relevance Feedback

Relevance Feedback. Main Idea: Modify existing query based on relevance judgements Extract terms from relevant documents and add them to the query and/or re-weight the terms already in the query Two main approaches: Automatic (psuedo-relevance feedback) Users select relevant documents

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547 views • 38 slides

Motivation

Motivation. Methods of local analysis extract information from local set of documents retrieved to expand the query An alternative is to expand the query using information from the whole set of documents

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319 views • 25 slides

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Chapter 5: Query Operations

Chapter 5: Query Operations

Relevance Feedback

Motivation