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Evaluating an IR system

  • Note: the information need is translated into a query

  • Relevance is assessed relative to the information need not the query

  • E.g., Information need: I'm looking for information on whether drinking red wine is more effective at reducing your risk of heart attacks than white wine.

  • Query: wine red white heart attack effective

  • Evaluate whether the doc addresses the information need, not whether it has these words


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