[GitHub] [lucene] eliaporciani opened a new pull request, #12253: GITHUB-12252: Add function queries for computing similarity scores between knn vectors

[via GitHub]

eliaporciani opened a new pull request, #12253:
URL: https://github.com/apache/lucene/pull/12253

   ### Description
   
   Add function queries for computing similarity scores between knn vectors.
   
   Example:
   ```java
       var v1 = new DenseVectorFloatConstValueSource(List.of(1, 2, 4));
       var v2 = new DenseVectorFloatFieldSource("knnFloatField");
       var functionQuery =  new FunctionQuery(
               new 
FloatDenseVectorSimilarityFunction(VectorSimilarityFunction.EUCLIDEAN, v1, v2));
   
   ```
   
   link to the issue: https://github.com/apache/lucene/issues/12252
   


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