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From Grant Ingersoll <>
Subject Re: Usefulness of Similarity.queryNorm()
Date Wed, 13 Feb 2008 01:04:24 GMT

I don't know a lot about it, but my understanding has always been that  
comparing across queries is difficult at best, so that would argue for  
removing it, but I haven't done any research into it.  I think it has  
been in Lucene for a good long time, so it may be that the history of  
why it is in there is forgotten.  Also, do you have a sense of it's  
cost in terms of performance?


On Feb 12, 2008, at 7:08 PM, Marvin Humphrey wrote:

> On Feb 12, 2008, at 9:08 AM, Marvin Humphrey wrote:
>> What would the consequences be of eliminating  
>> Similarity.queryNorm()?  I cargo-culted that method when porting,  
>> but now I'm going through and trying to refactor for simplicity's  
>> sake.  If I can zap it, I'd like to.
> I infer from the deafening silence that few people if any care about  
> queryNorm, or have even contemplated what it's there for.
> Marvin Humphrey
> Rectangular Research
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