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Use 'float' explicitly for OpenAI's embedding "encoding_format" (#9838)

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### What problem does this PR solve?

The default value for OpenAI '/v1/embeddings' parameter
'encoding_format' is 'base64'. Use 'float' explicitly to avoid base64
encoding & decoding, larger data size.


https://github.com/openai/openai-python/blob/main/src/openai/resources/embeddings.py
        if not is_given(encoding_format):
            params["encoding_format"] = "base64"

### Type of change

- [x] Performance Improvement
This commit is contained in:
Haiyue Wang 2025-09-02 10:31:51 +08:00 committed by GitHub
parent 0b456a18a3
commit 2e00d8d3d4
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1 changed files with 2 additions and 2 deletions
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rag/llm/embedding_model.py
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@ -145,7 +145,7 @@ class OpenAIEmbed(Base):
ress = []
total_tokens = 0
for i in range(0, len(texts), batch_size):
res = self.client.embeddings.create(input=texts[i : i + batch_size], model=self.model_name)
res = self.client.embeddings.create(input=texts[i : i + batch_size], model=self.model_name, encoding_format="float")
try:
ress.extend([d.embedding for d in res.data])
total_tokens += self.total_token_count(res)
@ -154,7 +154,7 @@ class OpenAIEmbed(Base):
return np.array(ress), total_tokens
def encode_queries(self, text):
res = self.client.embeddings.create(input=[truncate(text, 8191)], model=self.model_name)
res = self.client.embeddings.create(input=[truncate(text, 8191)], model=self.model_name, encoding_format="float")
return np.array(res.data[0].embedding), self.total_token_count(res)