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From Doug Cutting <>
Subject Re: Question about .f1, .f2, etc. files in index directory
Date Mon, 24 Feb 2003 17:00:37 GMT
Yes.  The .f[0...] files are indeed the norm files.  There is one file 
for each indexed field and each file contains a one-byte normalization 
factor for each document.

This is a documentation bug.  There is no .nrm file with per-document 
normalization files, rather multiple .f files, one per indexed field.


Eric Isakson wrote:
> Was reading and noticed that files
.f1, f2, ... are not mentioned, but a file called .nrm is.
> Are the .f1, .f2, ... files that are created in my index directory by DocumentWriter.writeNorms(Document
doc, String segment) the .nrm file that is documented in the section called Normalization
Factors? That is what it looked like, just wanted a confirmation from the experts before I
commit that to my documentation for my internal Lucene implementation.
> Thanks,
> Eric 
> --
> Eric D. Isakson        SAS Institute Inc.
> Application Developer  SAS Campus Drive
> XML Technologies       Cary, NC 27513
> (919) 531-3639
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