using Solr Specification Version: 4.0.0.2011.08.09.11.02.13
While trying understand scoring I noticed that "boost" is intermittently
displayed in the explain. For example, using edismax and the query string is
"q=Starbucks&qf=name.search name^2" my first result has the boost explicitly
listed in the explain as "2.0=boost". When I change the boost to 20,
however, I no longer see the boost listed. Should "boost" be displayed in
both cases? Any help understanding this behavior would be greatly
appreciated. Thanks!
Boost of 2 ----------------------------------------------------------------
f278968e-b2c6-4bbd-8e69-85ab938fa554: "
8.609146 = (MATCH) max of:
8.609146 = (MATCH) weight(name:starbucks^2.0 in 163) [DefaultSimilarity],
result of:
8.609146 = score(doc=163,freq=1.0 = termFreq=1
), product of:
0.99999994 = queryWeight, product of:
2.0 = boost
8.609147 = idf(docFreq=8644, maxDocs=17433139)
0.05807776 = queryNorm
8.609147 = fieldWeight in 163, product of:
1.0 = tf(freq=1.0), with freq of:
1.0 = termFreq=1
8.609147 = idf(docFreq=8644, maxDocs=17433139)
1.0 = fieldNorm(doc=163)
4.278918 = (MATCH) weight(name.search:starbuck in 163)
[DefaultSimilarity], result of:
4.278918 = score(doc=163,freq=1.0 = termFreq=1
), product of:
0.49850774 = queryWeight, product of:
8.583453 = idf(docFreq=8869, maxDocs=17433139)
0.05807776 = queryNorm
8.583453 = fieldWeight in 163, product of:
1.0 = tf(freq=1.0), with freq of:
1.0 = termFreq=1
8.583453 = idf(docFreq=8869, maxDocs=17433139)
1.0 = fieldNorm(doc=163)
"
Boost of 20 ----------------------------------------------------------------
f278968e-b2c6-4bbd-8e69-85ab938fa554: "
8.609147 = (MATCH) max of:
8.609147 = (MATCH) weight(name:starbucks^20.0 in 163) [DefaultSimilarity],
result of:
8.609147 = fieldWeight in 163, product of:
1.0 = tf(freq=1.0), with freq of:
1.0 = termFreq=1
8.609147 = idf(docFreq=8644, maxDocs=17433139)
1.0 = fieldNorm(doc=163)
0.42789182 = (MATCH) weight(name.search:starbuck in 163)
[DefaultSimilarity], result of:
0.42789182 = score(doc=163,freq=1.0 = termFreq=1
), product of:
0.049850777 = queryWeight, product of:
8.583453 = idf(docFreq=8869, maxDocs=17433139)
0.0058077765 = queryNorm
8.583453 = fieldWeight in 163, product of:
1.0 = tf(freq=1.0), with freq of:
1.0 = termFreq=1
8.583453 = idf(docFreq=8869, maxDocs=17433139)
1.0 = fieldNorm(doc=163)
"
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