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CSCI 5417 Information Retrieval Systems Jim Martin

CSCI 5417 Information Retrieval Systems Jim Martin

CSCI 5417 Information Retrieval Systems Jim Martin. Lecture 8 9/15/2011. Today 9/15. Finish evaluation discussion Query improvement Relevance feedback Pseudo-relevance feedback Query expansion. Evaluation. Summary measures Precision at fixed retrieval level

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677 views • 56 slides
CSE 490h, Autumn 2008 Scalable Systems: Design, Implementation and Use of Large Scale Clusters

CSE 490h, Autumn 2008 Scalable Systems: Design, Implementation and Use of Large Scale Clusters

CSE 490h, Autumn 2008 Scalable Systems: Design, Implementation and Use of Large Scale Clusters . Instructors: Ed Lazowska & Aaron Kimball TA: Slava Chernyak. Content. The fun stuff from Programming Languages Architecture Operating Systems Networking Databases Parallel Programming

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519 views • 42 slides
Evaluation of Relevance Feedback Algorithms for XML Retrieval

Evaluation of Relevance Feedback Algorithms for XML Retrieval

Evaluation of Relevance Feedback Algorithms for XML Retrieval. Silvana Solomon 27 February 2007. Supervisor: Dr. Ralf Schenkel. Outline. Short introduction Motivation & Goals Evaluating retrieval effectiveness INEX tool Evaluation methodology Results. (4) expanded query. (1) query.

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367 views • 25 slides
Evaluating Effectiveness of Information Retrieval System

Evaluating Effectiveness of Information Retrieval System

Evaluating Effectiveness of Information Retrieval System. Jing He, Yue Lu September 15, 2014. Outline. System Oriented Evaluation Cranfield Paradigm Measure Test Collection Incomplete Relevance Judgment Evaluation User Oriented Evaluation. Cranfield Paradigm.

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514 views • 23 slides
Information Retrieval

Information Retrieval

Information Retrieval. Ch 23.2. Information retrieval. Goal: Finding documents Search engines on the world wide web IR system characters Document collection Query language Result set Presentation of the result set. Evaluating IR system. Precision

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186 views • 7 slides

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