Abhishek Rawat created IMPALA-14568:
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Summary: Add support for cosine similarity function
Key: IMPALA-14568
URL: https://issues.apache.org/jira/browse/IMPALA-14568
Project: IMPALA
Issue Type: Task
Reporter: Abhishek Rawat
The cosine similarity function measures the angle between two vectors,
regardless of their length (magnitude). The use cases include measuring text
similarity and is ideal when the direction (semantic meaning/concept) is more
important than the magnitude.
Impala doesn't support a native vector data type yet, so we could possibly use
an ARRAY<FLOAT> data type for representing vectors.
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