benwtrent commented on issue #13519:
URL: https://github.com/apache/lucene/issues/13519#issuecomment-2203125856

   The only way to find out is to test it. I don't see how your suggestion 
would work without trying it out.
   
   Its better to think about what it would be in the unsigned `byte` case. A 
scale from `0-255` is what `int8` quantization naturally results in. Then to 
make it signed, you have a change to  `-127-127`.
   
   I don't immediately see how to adjust the correction to handle the switch 
from `0 * 255` to `-127 * 127`.
   
   @naveentatikonda any solution should support max-inner-product, any testing 
with normalized vectors & dot-product might result in false assurance. If you 
are using Lucene util, I would recommend using some older cohere embeddings 
(with their model from before CohereV3), and using the `-metric` `mip`.
   


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