Support for multi valued dense vector fields (through nested vectors and diversifying children query) #4051
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…QParser.java Co-authored-by: Christine Poerschke <cpoerschke@apache.org>
…QParser.java Co-authored-by: Christine Poerschke <cpoerschke@apache.org>
# Conflicts: # solr/core/src/test/org/apache/solr/search/vector/KnnQParserChildTest.java
# Conflicts: # solr/core/src/java/org/apache/solr/schema/DenseVectorField.java # solr/core/src/java/org/apache/solr/search/neural/KnnQParser.java # solr/core/src/test-files/solr/collection1/conf/schema-densevector.xml # solr/core/src/test/org/apache/solr/search/vector/KnnQParserMultiValuedVectorsTest.java
# Conflicts: # solr/core/src/java/org/apache/solr/search/vector/KnnQParser.java # solr/core/src/test-files/solr/collection1/conf/schema-densevector.xml # solr/core/src/test/org/apache/solr/search/vector/KnnQParserChildTest.java # solr/solr-ref-guide/modules/query-guide/pages/searching-nested-documents.adoc
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https://issues.apache.org/jira/browse/SOLR-18074
Description
The scope of this pull request is to give users the possibility of handling multivalued vectors in Solr documents both at indexing and query time:
Solution
It is implemented using behind the scenes nested documents:
at indexing time the JSON in input is parsed and translated into nested vector documents in a pseudofield: "nested_vectors"
at query time the child transformer allow to return only the best child (flat) or all children (flat)
Tests
Tests have been added to cover the major scenarios
Checklist
Please review the following and check all that apply:
mainbranch../gradlew check.