What the data for this category looks like
Business handling data for refinery and chemical production is mainly sourced from production management systems, equipment operation and maintenance logs, safety operation procedure libraries, and electronic workflows for operation approval. Operation approval records are updated in real time. Operation and maintenance logs are synchronized per shift. Safety procedures are revised quarterly. Documents include structured fields and unstructured text. Structured fields include work permit number, equipment ID, operation area, pressure (MPa), temperature (℃), and other items. Unstructured text covers operation steps, risk prevention and control measures, and approval processes for hot work, confined space work, and other operations.
What constraints these characteristics impose on the vector models and indexes link
Mixed structured and unstructured data requires retaining business associations during chunking, and avoid splitting work permit numbers and their corresponding operation steps. Real-time updated operation approval records require indexes to support incremental synchronization without full index reconstruction. Field units specific to the industry require retaining semantics during vector modeling to prevent matching deviations caused by unit confusion. Long-process documents require chunk lengths adapted to business nodes, and avoid truncating complete operation steps across chunks. Additionally, business handling involves safety compliance, so the accuracy of recall results has higher requirements, and low-match results must be strictly controlled.
How to set the configuration
Reference only; verify against the target FastGPT release and deployment documentation.
| Configuration Item | Recommended Value Range | Rationale |
|---|---|---|
| Chunk Length | 800–1200 characters | Adapt to the business node length of refinery and chemical production business handling documents, fully cover a single operation process or procedure segment |
| Overlap Length | 100–150 characters | Retain context association between adjacent business nodes, avoid semantic breaks in operation steps split across chunks |
| Similarity Threshold | 0.75–0.85 | Meet the safety and compliance requirements of refinery and chemical businesses, filter low-match irrelevant results, and ensure the accuracy of process guidance |
| Single Search Limit | Top 8 entries | Cover associated steps of common business handling processes, avoid missing key process nodes |
maxToken | 4000 token | Adapt to the total recall length of business handling documents, ensure complete embedding into the context window |
defaultToken | 200 token | Match the reading habits of frontline operators, control the output length of a single guidance document |
Three common mistakes
- Phenomenon: The interface returns a 404 status code after the embedding model is configured. Cause: The interface address and secret key of Baidu embedding-v1 are not correctly configured, or the interface permission is not enabled.
- Phenomenon: The vector model deployed without a GPU environment cannot be added in the management interface. Cause: The vector model container is not run in CPU mode, or the container resource allocation is insufficient.
- Phenomenon: The exported knowledge base data cannot be split by business category. Cause: Knowledge base classification tags are not set in advance according to business types such as hot work and confined space work, and only the global knowledge base dimension is used for export.
How to confirm the configuration is correctly applied
- Upload a typical refinery and chemical work permit document, and check whether the chunked text completely retains operation steps and equipment parameters.
- Initiate a business handling guidance query, and verify whether the similarity score of the returned results falls within the set threshold range.
- Test the incremental update function, submit new work permit data, and confirm that the index library automatically synchronizes updates.
- View the vector model operation logs, and confirm that there are no records of connection timeouts or parameter parsing errors.
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.