What the data for this category looks like
Data sources for this category include the engineering construction project approval management system, construction drawing review system, enterprise qualification database, and credit platform. The update frequency is daily. Daily documents include construction permit application, construction drawing review qualification certificate, quality and safety supervision procedures, and completion record form. Fields include project number, participating unit qualification level, approval node status, record date, and other relevant items. Content covers the full approval process for projects from start to completion, with no custom units added.
What constraints these characteristics impose on knowledge base retrieval and recall
Data updates daily, so the retrieval link must support incremental synchronization to maintain content timeliness. Most documents are structured approval materials with fixed fields and professional compliance terminology. The recall matching logic must be optimized for approval scenarios to avoid generic recall of irrelevant content. Core associated fields across different documents, such as project number, must be used as retrieval anchors to ensure recall results are strongly tied to specific approval items. Approval materials involve compliance requirements; incorrect recall can lead to unpermitted construction, construction delays, failed completion record filing, and other negative outcomes. The accuracy of recall results must be strictly controlled.
Configuration settings
Reference only; verify against the target FastGPT release and deployment documentation.
| Configuration Item | Recommended Value Range | Rationale |
|---|---|---|
| Similarity Threshold | 0.72–0.80 | Matches professional terminology and fixed fields in structured approval documents, filters low-correlation recall results |
| Single Search Limit | 8–12 items | Covers multiple types of materials for a single approval item, avoids excessive recall that causes context overflow |
| Search Mode | Precise Matching | Prioritizes results that strictly match keywords for fixed fields and compliance documents |
| Reranking Function | Enabled | Reorders initial recall results by relevance, improves the recall priority of core approval materials |
| Question Expansion Query | Disabled | Approval documents have fixed structures, no additional question expansion is needed, avoids introducing irrelevant recall content |
| Bind Knowledge Base Collection ID | Only the current approval knowledge base | Limits recall scope, avoids irrelevant content recall from cross-category knowledge bases |
Three common configuration errors
- Phenomenon: Empty recall results are returned in conversation scenarios, but the corresponding content can be retrieved normally in the knowledge base backend test. Cause: The similarity threshold is set too high, or the knowledge base collection ID is not bound correctly, leading to conversation context interfering with keyword matching logic.
- Phenomenon: Retrieval returns approval document content unrelated to the query. Cause: The search mode is set to fuzzy matching, and the knowledge base collection ID is not restricted, leading to recall of approval knowledge bases from other categories.
- Phenomenon: Structured fields in documents, such as participating unit qualification level, are not recalled correctly. Cause: Retrieval keywords are not optimized for the fixed fields of approval documents, or the reranking function is not enabled, leading to low-correlation results appearing first.
How to confirm the configuration is correct
- Upload one typical approval document, such as a construction permit application, to the corresponding knowledge base. Test retrieval in the knowledge base backend, confirm that the corresponding content can be retrieved normally.
- Enter approval-related questions in the conversation scenario, verify that the number of recall results matches the single search limit setting, and that result relevance meets the similarity threshold requirements.
- Switch the search mode between precise matching and fuzzy matching, compare the differences in recall results, confirm that they meet the current party building learning Q&A scenario requirements.
- Check the bind knowledge base collection ID configuration, ensure that only the knowledge base for the current engineering construction project approval category is bound, to avoid cross-knowledge-base recall.
The values provided are common starting points and should be evaluated against the reader's own samples.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-28.