I'd actually like to see a detailed wiki page on how all the parts of
a score are actually calculated and inter-related, but I'm not
knowledgeable enough to write it =\
Thanks for your time!
Matthew Runo
Software Engineer, Zappos.com
mr...@zappos.com - 702-943-7833
On Sep 9, 2009, at 3:00 PM, Jeff Newburn wrote:
I have done a search on the word “blue” in our index. The
debugQuery shows
some extremely strange methods of scoring. Somehow product 1 gets a
higher
score with only 1 match on the word blue when product 2 gets a lower
score
with the same field match AND an additional field match. Can
someone please
help me understand why such an obviously more relevant product is
given a
lower score.
<str name="954058">
2.3623571 = (MATCH) sum of:
0.26248413 = (MATCH) max plus 0.5 times others of:
0.26248413 = (MATCH) weight(productNameSearch:blue in 112779),
product
of:
0.032673787 = queryWeight(productNameSearch:blue), product of:
8.033478 = idf(docFreq=120, numDocs=136731)
0.0040672035 = queryNorm
8.033478 = (MATCH) fieldWeight(productNameSearch:blue in 112779),
product of:
1.0 = tf(termFreq(productNameSearch:blue)=1)
8.033478 = idf(docFreq=120, numDocs=136731)
1.0 = fieldNorm(field=productNameSearch, doc=112779)
2.099873 = (MATCH) max plus 0.5 times others of:
2.099873 = (MATCH) weight(productNameSearch:blue^8.0 in 112779),
product
of:
0.2613903 = queryWeight(productNameSearch:blue^8.0), product of:
8.0 = boost
8.033478 = idf(docFreq=120, numDocs=136731)
0.0040672035 = queryNorm
8.033478 = (MATCH) fieldWeight(productNameSearch:blue in 112779),
product of:
1.0 = tf(termFreq(productNameSearch:blue)=1)
8.033478 = idf(docFreq=120, numDocs=136731)
1.0 = fieldNorm(field=productNameSearch, doc=112779)
</str>
<str name="402943">
1.9483687 = (MATCH) sum of:
0.63594794 = (MATCH) max plus 0.5 times others of:
0.16405259 = (MATCH) weight(productNameSearch:blue in 8142),
product of:
0.032673787 = queryWeight(productNameSearch:blue), product of:
8.033478 = idf(docFreq=120, numDocs=136731)
0.0040672035 = queryNorm
5.0209236 = (MATCH) fieldWeight(productNameSearch:blue in 8142),
product of:
1.0 = tf(termFreq(productNameSearch:blue)=1)
8.033478 = idf(docFreq=120, numDocs=136731)
0.625 = fieldNorm(field=productNameSearch, doc=8142)
0.55392164 = (MATCH) weight(color:blue^10.0 in 8142), product of:
0.15009704 = queryWeight(color:blue^10.0), product of:
10.0 = boost
3.6904235 = idf(docFreq=9309, numDocs=136731)
0.0040672035 = queryNorm
3.6904235 = (MATCH) fieldWeight(color:blue in 8142), product of:
1.0 = tf(termFreq(color:blue)=1)
3.6904235 = idf(docFreq=9309, numDocs=136731)
1.0 = fieldNorm(field=color, doc=8142)
1.3124207 = (MATCH) max plus 0.5 times others of:
1.3124207 = (MATCH) weight(productNameSearch:blue^8.0 in 8142),
product
of:
0.2613903 = queryWeight(productNameSearch:blue^8.0), product of:
8.0 = boost
8.033478 = idf(docFreq=120, numDocs=136731)
0.0040672035 = queryNorm
5.0209236 = (MATCH) fieldWeight(productNameSearch:blue in 8142),
product of:
1.0 = tf(termFreq(productNameSearch:blue)=1)
8.033478 = idf(docFreq=120, numDocs=136731)
0.625 = fieldNorm(field=productNameSearch, doc=8142)
</str>
--
Jeff Newburn
Software Engineer, Zappos.com
jnewb...@zappos.com - 702-943-7562
