What this category’s data consists of
Documents serving as policy and regulatory basis for the mining and mineral processing sector come from formal releases by national emergency management authorities, national natural resources authorities, and industry associations. These include metal and nonmetal mine safety regulations, mining permit specifications, environmental protection requirements, and similar official documents. Update frequency follows an irregular schedule, aligned with the release of new regulations or local implementation rules. Most documents use PDF format, while some are web versions published on official websites. Their structure includes document numbers, issuing authorities, effective dates, and chapter and clause sections. Some attachments contain quantitative parameter tables, with fields such as operating height, ventilation volume, and mining lifespan. Common units include meters, cubic meters, tons, and years.
Constraints imposed on document parsing and chunking
The fixed chapter and clause numbering structure of policy documents requires that chunking does not break logical connections. Otherwise, complete policy basis cannot be matched during retrieval. A large number of quantitative parameter tables require the parsing process to retain structured information, to avoid losing entries during chunking. Some older documents are scanned PDFs, so OCR parsing must be enabled additionally. Large compiled policy files have large sizes, so higher upload and parsing timeout thresholds need to be supported.
Configuration settings
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
chunkSize | 800–1200 characters | Mining and mineral processing policy documents mostly combine short paragraphs with long explanations. This range preserves clause integrity while avoiding context fragmentation caused by overly long single chunks |
chunkSplitter | By paragraph + heading hierarchy | Policy documents have clear clause numbering and chapter structures. Chunking by hierarchy preserves contextual connections and avoids incorrect clause splitting |
customPdfParse | Enable OCR mode | Some older policy documents are scanned PDFs. OCR is required to extract complete text content |
PARSE_FILE_TIMEOUT_SECONDS | 600 seconds | Large compiled policy files take longer to parse. This duration prevents mid-parsing timeout interruptions |
UPLOAD_FILE_MAX_SIZE | 1000 MB | Some multi-file compiled policy documents have large sizes. This upper limit supports complete uploads |
chunkSettingMode | Manual configuration | Special structures of policy documents require adjustments to chunking parameters. Manual configuration allows flexible adaptation to different types of policy files |
Three common configuration mistakes
- Phenomenon: Only partial entries are returned after parsing policy table files. Cause: Table structured parsing configuration is not enabled, leading to missing unrecognized table rows during chunking.
- Phenomenon: Timeout errors occur when parsing large policy PDFs. Cause: The
PARSE_FILE_TIMEOUT_SECONDSconfiguration value is lower than the actual required parsing duration. - Phenomenon: Policy clause numbering is broken after chunking. Cause: Chunking rules are not configured by heading hierarchy, causing independent clauses to be split across chapters.
How to confirm correct configuration
- Upload a single test mining policy PDF, and check if the parsed text retains complete clause numbering, chapter structure and table content.
- Review the chunk list, confirm that the character count of each single chunk falls within the configured
chunkSizerange, and no clause splitting breaks occur. - Upload multiple policy files, confirm that the parameter format meets the interface requirements of FastGPT v4.17.0, and tasks can start and complete parsing normally.
- Trigger a parsing task and check background logs, confirm that no abnormal states such as timeouts or parsing failures occur.
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.