Evaluation Measures Evaluating an iR system Note: the information need is translated into a quer Relevance is assessed relative to the information need not the query E. g. Information need /'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 You evaluate whether the doc addresses the information need not whether it has these wordsEvaluation 9 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 ▪ You evaluate whether the doc addresses the information need, not whether it has these words Measures