What the Data for This Category Looks Like
Data sources for this category include the food safety sampling monitoring system, the State Administration for Market Regulation sampling results query system, testing institution LIMS systems, and food producer and operator ledgers. Data is updated monthly, and covers five core document types: sampling plans, sampling slips, test reports, non-compliant food verification and disposal reports, and risk control announcements. Documents include dedicated fields such as sampling locations, test items, non-compliance determinations, and disposal processes. Minor format differences exist between documents from different sources.
Constraints Imposed on the Knowledge Base Retrieval and Recall Link
The monthly update cycle requires the knowledge base index synchronization rhythm to match the data update schedule, to avoid recalling expired data. Dedicated fields and format differences across multiple document types require the retrieval link to support filtering recall results by document type. Core documents such as test reports and verification and disposal reports are frequently used, so retrieval must prioritize these high-priority data. Format differences across multiple data sources require basic field standardization preprocessing before retrieval, otherwise matching accuracy will decrease. Inaccurate retrieval results may lead to mistakes in sampling plan formulation or delayed disposal of non-compliant food.
Configuration Recommendations
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
similarity | 0.72–0.80 | Food safety business documents have high professional specificity. This range filters irrelevant general food-related questions while retaining highly matched professional content |
limit | Top 8–12 results | Core food safety sampling documents are compact in content. Excessive recall will exceed context window limits and affect subsequent dialogue logic |
searchMode | vector + keyword | Balances vector matching for professional terminology and precise keyword retrieval for items such as sampling slip numbers and report numbers, adapting to different query scenarios |
usingReRank | Enabled | After multi-document recall, re-ranking can prioritize high-priority content such as non-compliant food verification and disposal reports and test reports |
datasetSearchUsingExtensionQuery | Enabled | Adapts to colloquial queries from business personnel, expands daily expressions to standard business terminology, and improves recall coverage |
collectionIds | Bind dedicated sampling business collection | Isolates knowledge base data from other categories to avoid interference from non-sampling content on retrieval results |
Three Common Configuration Mistakes
- Phenomenon: Retrieval results include non-sampling business documents, and the number of results exceeds expectations. Cause: The
collectionIdsbinding for the dedicated business collection is not configured, resulting in recall of content from other knowledge bases. - Phenomenon: Professional term matching accuracy is low, such as "non-compliant food disposal" being recalled as general food quality issues. Cause:
datasetSearchUsingExtensionQueryis not enabled, and thesimilaritythreshold is set too low, failing to filter low-matching content. - Phenomenon: Calling the
api/v1/chat/completionsinterface with a specified knowledge base tag returns no valid results. Cause: The correspondingcollectionIdsis not correctly associated in the request parameters, or the collection has incorrect access permissions configured.
How to Verify Correct Configuration
- Log in to the FastGPT v4.17.0 backend knowledge base management page, and confirm that the currently bound collection only includes core documents of this category such as sampling plans and sampling slips.
- Submit a simulated business query, such as "How to review a test report", and check that the
similarityscore of returned results falls within the preset range. - Call the OpenAPI interface, pass the specified
collectionIdsparameter, and verify that returned results only include sampling-related documents for this category with no irrelevant content. - After enabling
usingReRank, compare result order before and after re-ranking to confirm that high-priority documents such as non-compliant food verification and disposal reports are recalled first.
The values provided here 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.