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Updated FAQ: Range of input length (#594)

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### What problem does this PR solve?

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- [x] Documentation Update
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writinwaters
2024-04-28 19:03:43 +08:00
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@ -340,10 +340,21 @@ You can use Ollama to deploy local LLM. See [here](https://github.com/infiniflow
### 6. How to configure RAGFlow to respond with 100% matched results, rather than utilizing LLM?
1. Click the **Knowledge Base** tab in the middle top of the page.
1. Click **Knowledge Base** in the middle top of the page.
2. Right click the desired knowledge base to display the **Configuration** dialogue.
3. Choose **Q&A** as the chunk method and click **Save** to confirm your change.
### Do I need to connect to Redis?
No, connecting to Redis is not required to use RAGFlow.
No, connecting to Redis is not required.
### `Error: Range of input length should be [1, 30000]`
This error occurs because there are too many chunks matching your search criteria. Try reducing the **TopN** and increasing **Similarity threshold** to fix this issue:
1. Click **Chat** in the middle top of the page.
2. Right click the desired conversation > **Edit** > **Prompt Engine**
3. Reduce the **TopN** and/or raise **Silimarity threshold**.
4. Click **OK** to confirm your changes.
![topn](https://github.com/infiniflow/ragflow/assets/93570324/7ec72ab3-0dd2-4cff-af44-e2663b67b2fc)