The following list of Rs and Ns represents relevant (R) and nonrelevant (N) returned documents in...

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The following list of Rs and Ns represents relevant (R) and nonrelevant (N) returned documents in a ranked list of 20 documents retrieved in response to a query from a collection of 10,000 documents. The top of the ranked list (the document the system thinks is most likely to be relevant) is on the left of the list. This list shows 6 relevant documents. Assume that there are 8 relevant documents in total in the collection. RRN NNNNN RNRN NNRN NNN R a. What is the precision of the system on the top 20? b. What is the F1 on the top 20? The following list of Rs and Ns represents relevant (R) and nonrelevant (N) returned documents in a ranked list of 20 documents retrieved in response to a query from a collection of 10,000 documents. The top of the ranked list (the document the system thinks is most likely to be relevant) is on the left of the list. This list shows 6 relevant documents. Assume that there are 8 relevant documents in total in the collection. RRN NNNNN RNRN NNRN NNN R a. What is the precision of the system on the top 20? b. What is the F1 on the top 20?

Answer rating: 100% (QA)

Given list of Rs relevant and Ns nonrelevant in the top 20 ranked documents R R N N N N N N N N N N ... View the full answer