What the data for this category looks like
Reference only; verify against the target FastGPT release and deployment documentation.
What constraints these characteristics impose on the knowledge base retrieval and recall workflow
Personnel policies’ structured fields and update characteristics create multiple constraints for retrieval and recall. First, policies include effective date and applicable scope fields, so retrieval must automatically filter expired policies and only return currently effective content matching the employee’s position. Second, document updates have no fixed cycle, so incremental synchronization and archiving of old policies must be supported to avoid retrieving invalid content. Third, single document length varies widely; long policies must be split by logical paragraphs to avoid breaking clause integrity, while also supporting targeted retrieval for different job roles.
How to set the configurations
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
similarity | 0.75–0.85 | Personnel policy clauses are precise, so low-match results must be filtered to avoid confusing similar policy entries |
limit | Top 3–5 results | Personnel policy entries are clear; too many results will increase employees’ reading burden and reduce query efficiency |
searchMode | Semantic search | Employee questions often use colloquial language; semantic search meets the semantic matching needs of natural language queries |
usingReRank | Enabled | Long documents split into chunks may have scattered semantics; re-ranking improves matching accuracy and ensures retrieved content is highly relevant to the query |
datasetSearchUsingExtensionQuery | Enabled | Employee questions may omit policy background or use abbreviations; extended queries can cover more relevant policy content |
collectionIds | Bind the exclusive knowledge base collection ID for personnel policies | Isolate knowledge bases of different categories, avoid retrieving non-personnel content, and ensure accurate retrieval scope |
Three Common Configuration Mistakes
- Phenomenon: Expired personnel policy documents appear in retrieval results. Cause: Retrieval rules filtered by effective date are not configured, or expired policies are not archived to an independent collection.
- Phenomenon: The chat window displays the prompt "No knowledge base selected". Cause: The
collectionIdsof the exclusive personnel policy knowledge base are not bound in the application configuration, or the bound knowledge base collection has not completed permission verification. - Phenomenon: The system directly returns "unable to answer" when an employee asks a personnel-related question not included in the knowledge base. Cause:
datasetSearchUsingExtensionQueryis not enabled, so only content existing in the knowledge base is retrieved, and generalized reasoning is not triggered.
How to Verify Correct Configuration
- Upload a test policy document marked with an expired effective date, initiate a retrieval, and confirm that the document is not included in the results to verify that the effective date filtering configuration is active.
- Enter a simulated colloquial employee question, such as "Can the probation period be extended?", confirm that the retrieved content matches the currently effective probation period policy, and verify that the
searchModeandsimilarityconfigurations are appropriate. - Check the knowledge base collection bound to the application, confirm that it only contains personnel policy-related documents and no content from other categories, and verify that the
collectionIdsconfiguration is correct. - Enter a related question not included in the knowledge base, such as "Does marriage leave include statutory holidays?", confirm whether generalized reasoning is triggered, and verify that
datasetSearchUsingExtensionQueryis enabled.
The values provided are common starting points and should be measured 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.