On May 10, 2009, at 5:59 AM, liat oren wrote:
The output is the following:
*finlin, score: 19.366615*
19.366615 = (MATCH) fieldWeight(worlds:6621468^3.0 in 35433),
product of:
4.2426405 = (MATCH) btq, product of:
0.70710677 = tf(phraseFreq=0.5)
6.0 = scorePayload(...)
7.3036084 = idf(worlds: 6621468=110)
0.625 = fieldNorm(field=worlds, doc=35433)
*TTD, score: 15.493294*
15.493293 = (MATCH) fieldWeight(worlds:6621468^3.0 in 20), product of:
2.1213202 = (MATCH) btq, product of:
0.70710677 = tf(phraseFreq=0.5)
3.0 = scorePayload(...)
7.3036084 = idf(worlds: 6621468=110)
1.0 = fieldNorm(field=worlds, doc=20)
Can anyone explain me the highlighted parts of the score?
I read all the explanations in the api and read a lot of threads
about the
scoring, but didn't really understand these factors.
Why in finlin, we have the doc 35433 and in TTD, its 20?
http://lucene.apache.org/java/2_4_1/api/org/apache/lucene/search/Similarity.html
fieldNorm = norm (not sure why the docs aren't consistent) The norm
takes into account document length and boosts (http://lucene.apache.org/java/2_4_1/api/org/apache/lucene/search/Similarity.html#formula_norm
)
The gist of what you are seeing , I believe, is that finlin is a lot
longer than TTD. Is that the case?
--------------------------
Grant Ingersoll
http://www.lucidimagination.com/
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