What the Data for This Category Looks Like
Official public documents from the National Energy Administration, Ministry of Emergency Management, local state-owned assets supervision and administration commissions, and coal chemical industry associations form the main source of coal chemical industry policy and regulatory basis data. Data updates occur when new policies release or existing policies revise, with no fixed cycle. The system syncs updates for core policy documents immediately after their effective date. Most documents follow formal official formats. They include issuing authority, document number, effective date, scope of application, specific clauses and other details. Fields cover policy category, implementation standard number, responsible entity and more. Clauses follow a tiered structure of articles, paragraphs and sub-paragraphs. Individual document lengths range from hundreds to tens of thousands of words.
What Constraints These Characteristics Impose on Knowledge Base Retrieval and Recall
Coal chemical industry policy documents are generally long and use clear hierarchical clause structures. Long content can exceed the carrying limit of a single API request during retrieval. Splitting clause context during chunking can lose the complete policy logic. Policy data has strict timeliness requirements. New policies replace old ones, so retrieval must prioritize the latest effective documents to avoid returning revoked content. Documents include precise fields such as issuing authority and applicable region. Failing to associate these fields during retrieval can return irrelevant policy content, reducing response accuracy.
Configuration Settings
This configuration uses FastGPT v4.17.0, and meets the retrieval needs of coal chemical industry policy knowledge bases.
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
similarity | 0.72–0.80 | Coal chemical industry policy clauses use precise wording, so low-match irrelevant content must be filtered, while policy requirements with similar expressions must be covered |
limit | Top 8–12 results | A single coal chemical industry policy document contains multiple clauses. Retrieving too many will exceed the context window, while retrieving too few will fail to cover the complete policy logic |
searchMode | Enable metadata associated retrieval | Policy documents include metadata such as issuing authority and applicable region. Associated retrieval can accurately filter out non-matching scenario content |
usingReRank | Enable | Coal chemical industry policies have clauses with similar expressions. Reranking can prioritize returning content that most closely matches the core needs of the query |
datasetSearchUsingExtensionQuery | Enable | Coal chemical industry policies use specialized terminology. Extended queries can supplement synonyms and near-synonyms to improve retrieval coverage |
collectionIds | Bind to the dedicated coal chemical industry policy dataset | Distinguish policy data from other categories to avoid retrieving institutional content from unrelated fields |
Three Common Misconfigurations
- An
offset is out of boundserror occurs when uploading policy documents of 190 MB or larger. The cause is that no reasonable chunk length was set during chunking, causing the offset during the chunking process to exceed the valid range of the file. - Answer latency increases significantly after enabling knowledge base association. The cause is that the
limitparameter value was not restricted, and too many policy clauses were retrieved, causing the context window to exceed the model's carrying limit and increasing inference time. - Mismatched industry policy content appears in retrieval results. The cause is that the dedicated dataset
collectionIdswas not bound, resulting in the retrieval of institutional documents from other fields and blurring the boundary between coal chemical industry policies and those of other industries.
How to Confirm Proper Configuration
- Upload a test coal chemical industry policy document, check whether the chunked content retains complete clause context, with no truncation or offset errors.
- Initiate a query targeting specific policy clauses, verify that the issuing authority and effective date of the retrieved results match the query, and confirm that metadata filtering is active.
- Adjust the
similarityparameter, compare changes in the matching degree of retrieval results, and confirm that the value meets the precision requirements of coal chemical industry policies. - After enabling
usingReRank, check whether the reranked results prioritize returning policy content most closely related to the core needs of the query.
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.