13.A single search (search ‘A’) of a database retrieved a total of 8,734 documen
ID: 174418 • Letter: 1
Question
13.A single search (search ‘A’) of a database retrieved a total of 8,734 documents, of which 429 pertain to the topic being studied. Several additional searches on the topic of interest were also conducted and these additional searches plus search ‘A’ retrieved a total of 12,832 distinct documents, of which 1,987 pertained to the topic of interest. Given all of the above information, with respect to search ‘A’, what quantities can be calculated?
A. Precision, recall, and relative recall
B. Precision and recall
C. Recall and relative recall
D. Precision and relative recall
14. A new retrieval algorithm is being evaluated using a test database, constructed for that purpose. A single search (search ‘A’) of the database retrieved a total of 6,400 documents, of which 1,129 pertain to the topic being studied. Several additional searches on the topic of interest were also conducted and these additional searches plus search ‘A’ retrieved a total of 7,395 distinct documents, of which 1,488 pertained to the topic of interest. The person who constructed the database tells you that there are a total of 10,500 documents in the database, of which 1,750 are pertinent to the topic of your search. Given all of the above information, with respect to search ‘A’ what quantity (quantities) (recall, precision, or relative recall) can be calculated?
A. Precision, recall, and relative recall
B. Precision and recall
C. Recall and relative recall
D. Precision and relative recall
Explanation / Answer
13. Precision means how many selections are relevant to us.
recall means the number of relevant items to be selected.
And relative recall is the number found by search engine/ total results.
Referring to the definition of the above three, all of these can be calculated.
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