Lecture_17_02 - Evaluation in IR Introduction to...

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Evaluation in IR Introduction to Information Retrieval INF 141/ CS 121 Donald J. Patterson Content adapted from Hinrich Schütze http://www.informationretrieval.org
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Outline Evaluation in IR Intro to Evaluation Standard Test Collections Evaluation of Unranked Retrieval Evaluation of Ranked Retrieval Assessing relevance Broader perspectives Result Snippets
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Intro to Evaluation Evaluation in IR There are many implementation decisions to be made in an IR system Crawler Depth-first or breadth-first? Indexer Use zones? Which zones? Use stemming? Use multi-word phrases? Which ones?
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Intro to Evaluation Evaluation in IR There are many implementation decisions to be made in an IR system Query Ranked Results? PageRank? Which formula do we use in the TF-IDF Matrix? Should we use Latent Semantic Indexing? How many dimensions should we reduce?
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Intro to Evaluation Evaluation in IR
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