Need help again.

HiPromote@aol.com
Wed, 29 Jan 1997 16:49:37 -0500 (EST)


<< Think of it this way -- recall is a measure of whether or not the engine
finds *all* of the relevant documents, or misses some. The definition on
the Excite page makes this a bit muddy, but if you read the whole
paragraph,
it becomes clearer. Similarly, precision is a measure of whether or not
the
engine *only* finds relevant documents.
>>
I'm sorry that I'm not understood well. I know the definition of recall and
precision. The recall is:
Relevant Documents in result list / All Relevant Documents in Search
Engine.
Excite claims that they are most accurate one in the search engine world,
and they give out a prove:
( a test, http://www.excite.com/ice/precision.html ) . What I don't
understand is: In this test, how do they count the number of "All Relevant
Documents in Search Engine". Any help is appreciate.
Thank you nick !

Yaokun

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