What This Category of Data Looks Like
Business data for hazardous chemicals storage and transportation comes from four internal sources: safety data sheets (SDS), storage and transportation ledgers, daily inspection records, and emergency response procedures. Daily inspection records are updated each day. SDS documents and formal compliance procedures are revised quarterly or after emergency incidents. Document structures include fixed fields: common hazardous chemical name, CAS registry number, storage temperature and humidity thresholds, inspection cycle, and leak disposal process. Supporting units include cubic meter storage volume, milligrams per cubic meter gas concentration, and hourly inspection frequency, among others.
Constraints for Knowledge Base Retrieval and Recall
Fixed structured fields require retrieval to support both precise field matching and semantic recall. Do not rely solely on semantic retrieval, as this can cause key information such as CAS numbers and storage conditions to fail to match. Daily inspection records require real-time incremental indexing. Full updates cannot meet the retrieval timeliness required for emergency scenarios. Long documents such as complete SDS require proper splitting to retain context. Too short chunks will break the logical connection of disposal procedures. Too long chunks will increase the computational load of vector retrieval.
Configuration Settings
Reference only; verify against the target FastGPT release and deployment documentation.
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
similarity | 0.72–0.80 | Matches core semantics such as hazardous chemical names and storage conditions. A threshold that is too low will include irrelevant administrative office documents, while a threshold that is too high will miss compliant disposal procedures. |
limit | Top 8 entries | A single batch of recalls covers multiple types of business documents, preventing a single document type from filling all results, and adapting to multi-scenario retrieval needs for hazardous chemicals storage and transportation. |
searchMode | hybrid | Combines keyword matching and semantic recall, adapting to mixed structured and unstructured business data such as CAS numbers and storage conditions. |
usingReRank | Enabled | Performs secondary ranking on recalled chunk results, filters redundant non-core content in long documents, and improves retrieval accuracy. |
datasetSearchUsingExtensionQuery | Enabled | Automatically expands aliases for hazardous chemical terms. For example, associates "liquid ammonia" with "anhydrous ammonia" and "ammonia solution", covering term usage habits across different scenarios. |
collectionIds | Bind exclusive dataset ID | Limits the retrieval scope to only documents related to hazardous chemicals storage and transportation, avoiding mixing irrelevant content from general office knowledge bases. |
Three Common Mistakes
- Phenomenon: Retrieval results do not include newly added hazardous chemicals storage and transportation inspection records from the current day. Cause: Incremental update synchronization is not enabled, only full index updates are performed, and real-time newly added business data is not covered.
- Phenomenon: Searching for "liquid ammonia leak disposal" returns a large number of irrelevant administrative office documents. Cause: The exclusive hazardous chemicals storage and transportation dataset is not specified via
collectionIds, and the retrieval scope includes the general office knowledge base. - Phenomenon: Single retrieval takes more than 10 seconds, and a timeout is displayed on the frontend. Cause: The
limitparameter is not set reasonably, too many long document chunks are recalled, leading to excessive time consumption in vector retrieval and reranking processes.
How to Confirm Configuration is Complete
- Upload a new hazardous chemicals SDS document, wait for indexing to complete, search for core terms within the document, and confirm that the result includes chunked content from this document.
- Enter the retrieval configuration panel of the dataset, check the values of parameters such as
similarityandusingReRank, and confirm that they match the preset configuration. - Initiate a retrieval that includes a CAS number, and confirm that results preferentially return documents matching this structured field.
- Monitor the response time of the retrieval interface, and confirm that single retrieval time meets the requirements of the business scenario.
The values provided here are common starting points and should be evaluated against samples relevant to the specific deployment context.
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.