"Knowledge" block settings: The implementation and the documentation are different.

[TakahitoUsui]

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Dify version

0.14.1

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

I set the "Knowledge" in Dify "0.14.1".

• Index Method: Economical
• Retrieval Setting: Inverted Index

✔️ Expected Behavior

I hope when the workflow use one "Knowledge", the rerank model is optional.

❌ Actual Behavior

When I use "Knowledge Retrieval" block with this "Knowledge", Dify says "Rerank Model is required". But in this setting "Knowledge", the rerank model is optional. That's what is written in the Dify's documents.

• https://docs.dify.ai/guides/knowledge-base/integrate-knowledge-within-application#frequently-asked-questions
• https://docs.dify.ai/zh-hans/guides/knowledge-base/integrate-knowledge-within-application#chang-jian-wen-ti

[dosubot]

I found a similar closed issue titled Knowledge Retrieval Node Incorrectly Reverts to RerankModel, which was resolved by a pull request. The pull request addressed the issue by ensuring that the top_n parameter is valid and that the query is not empty, improving the user experience with the Wenxin Rerank model ^[1].

Regarding your current issue, it seems there is a discrepancy between the Dify documentation and the actual implementation in the codebase concerning the 'Knowledge Retrieval' block settings. The documentation suggests that the rerank model should be optional for the 'Economical' index method and 'Inverted Index' retrieval setting, but the implementation requires it. This might indicate a bug or an oversight in the documentation or codebase. Unfortunately, I couldn't find specific information about this discrepancy in the available data.

To continue talking to Dosu, mention @dosu.

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