What this category of data looks like
Refining and chemical production party building learning data mainly comes from internal party building archives of state-owned enterprises, special party building guidance documents for the petroleum and petrochemical industry, and party member learning ledgers at production sites. The data is updated once a month, covering three types of documents: policy original texts, on-site party building cases, and special learning courses during device overhauls. Document fields include document number, issuing unit, applicable production scenario, and release date. The length of a single document ranges from hundreds to thousands of characters, and most file sizes fall between 100 KB and 5 MB.
What constraints do these characteristics impose on the knowledge base retrieval and recall link
First, the exclusive internal data source requires limiting the retrieval scope to the refining and chemical party building exclusive knowledge base, and prohibits the introduction of public general party building content. Second, the monthly update rhythm requires configuring the knowledge base synchronization task with a fixed periodic trigger to avoid recalling expired or unupdated learning materials. Third, the wide span of document lengths requires adapting the retrieval chunking strategy to documents of different lengths, avoiding truncation of key content in long documents or over-fine chunking of short documents. Fourth, the applicable production scenario field requires associating retrieval with refining and chemical production keywords such as device overhaul and safety demonstration post to improve scenario matching. The retrieval logic of FastGPT v4.17.0 adapts to such scenario constraints.
How to set the configurations
Reference only; verify against the target FastGPT release and deployment documentation.
| Configuration Item | Recommended Range | Rationale |
|---|---|---|
similarity | 0.72–0.78 | Match the professional term density of refining and chemical party building documents, filter irrelevant general party building content |
limit | 8 | Adapt to the single-document length of refining and chemical party building documents, control the total character count of the context |
searchMode | hybrid | Combine keyword and semantic retrieval, cover policy original texts and on-site case documents |
usingReRank | true | Reorder retrieval results by refining and chemical scenario relevance to improve accuracy |
datasetSearchUsingExtensionQuery | false | Turn off additional extended queries to avoid introducing party building information from non-refining and chemical scenarios |
collectionIds | ["coloilrefining_party"] | Limit the retrieval scope to only the refining and chemical party building exclusive knowledge base, avoid cross-category retrieval |
Three common mistakes
- Symptom: Even when the
datasetSearchUsingExtensionQueryparameter is turned off, retrieval results still include supplementary information from non-knowledge base sources. Cause: The associated logic ofusingReRankwas not triggered, or the configuration was not activated in the system. - Symptom: When deploying a PG database environment via Docker, knowledge base index creation fails, and the interface shows abnormal index status. Cause: Insufficient memory resources allocated to the PG database, or incorrect connection timeout parameters were configured, causing the index construction process to interrupt.
- Symptom: An empty result is returned after calling the retrieval interface, with no matching refining and chemical party building documents. Cause: The
collectionIdsparameter was not specified, resulting in the retrieval scope not being limited to the refining and chemical party building exclusive knowledge base, or the specified collection ID was incorrect.
How to confirm the configuration is correct
- Submit a question exclusive to the refining and chemical party building scenario, and verify that retrieval results only come from the configured knowledge base collection with no external irrelevant content.
- View the retrieval log to confirm that the matching threshold of the
similarityparameter conforms to the preset range, filtering out irrelevant content. - Test that after turning off extended queries, no additional supplementary non-knowledge base information appears in the results.
- Check the index creation status to confirm there are no abnormal error reports, and the index synchronization cycle meets the monthly update requirement.
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.