lucene-java-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "M. Mokotov" ...@mokotov.org>
Subject RE: tf=0 while lucene is finding matches?
Date Tue, 24 May 2005 15:13:45 GMT
OK, I think I'm missing something big time...
Can someone point me to the documentation of the explain?
 
Thanks a lot,
M

-----Original Message-----
From: M. Mokotov [mailto:mk@mokotov.org] 
Sent: Tuesday, May 24, 2005 4:46 PM
To: 'java-user@lucene.apache.org'
Subject: tf=0 while lucene is finding matches?


Hi,
 
Anyone knows what is exactly Similarity.tf()?
I understood it's term frequency on a document.
Still, when I'm searching for a string a document contains, and the
Explain().toString() shows tf=0.
 
 
search string: "SubTitle:(Without)"
matching documents: 3
 
0: 1.0: "Dropping Out," Drifting Off, Being Excluded: Becoming Somebody
Without School
0.0 = fieldWeight(SubTitle:without in 0), product of:
  0.0 = tf(termFreq(SubTitle:without)=0)
  7.214108 = idf(docFreq=3)
  0.5 = fieldNorm(field=SubTitle, doc=0)
 


1: 0.625: "I Have A Life" Bride's Guide: Plan The Wedding You've Always
Wanted--without Losing Your Mind
0.0 = fieldWeight(SubTitle:without in 1), product of:
  0.0 = tf(termFreq(SubTitle:without)=0)
  7.214108 = idf(docFreq=3)
  7.5161928E9 = fieldNorm(field=SubTitle, doc=1)
 

2: 0.625: 1 Microsoft Way: A Cookbook to Breaking Bill Gates Windows
Monopoly Without Breaking Windows
0.0 = fieldWeight(SubTitle:without in 2), product of:
  0.0 = tf(termFreq(SubTitle:without)=0)
  7.214108 = idf(docFreq=3)
  7.5161928E9 = fieldNorm(field=SubTitle, doc=2)
 


Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message