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fix(weaviate): correct score calcuation for cosine distance

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ChristianZaccaria 2025-08-29 18:07:44 +01:00
parent f9794f8475
commit 0cd86e696c
1 changed files with 4 additions and 1 deletions
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llama_stack/providers/remote/vector_io/weaviate/weaviate.py
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@ -112,7 +112,10 @@ class WeaviateIndex(EmbeddingIndex):
log.exception(f"Failed to parse document: {chunk_json}")
continue
score = 1.0 / doc.metadata.distance if doc.metadata.distance != 0 else float("inf")
if doc.metadata.distance is None:
continue
# Convert cosine distance ∈ [0,2] → cosine similarity ∈ [-1,1]
score = 1.0 - float(doc.metadata.distance)
if score < score_threshold:
continue