IR-part2

The query maui resort were the ones containing the

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Unformatted text preview: rpolated precision §༊  Idea: If locally precision increases with increasing recall, then you should get to count that… §༊  So you use the max of precisions to right of value 75 Introduc)on to Informa)on Retrieval Sec. 8.4 Evalua*on §༊  Graphs are good, but people want summary measures! §༊  Precision at fixed retrieval level §༊  Precision- at- k: Precision of top k results §༊  Perhaps appropriate for most of web search: all people want are good matches on the first one or two results pages §༊  But: averages badly and has an arbitrary parameter of k §༊  11- point interpolated average precision §༊  The standard measure in the early TREC compe**ons: you take the precision at 11 levels of recall varying from 0 to 1 by tenths of the documents, using interpola*on (the value for 0 is always...
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