Reference only; verify against the target FastGPT release and deployment documentation.
What data for this category looks like
Policy and regulatory basis documents for the advanced chemical materials sector come primarily from official announcements, industry-specific planning documents from departments including the Ministry of Industry and Information Technology and the National Development and Reform Commission, as well as localized industrial support policies released by local government platforms. Document updates trigger when new policies are issued. Single documents mostly use PDF, Word, or scanned formats, and include fields such as document number, issuing authority, scope of application, technical indicator requirements, and subsidy details. Some attachments include new material product performance parameter tables, using standardized units of measurement such as mass, volume, and performance indicators.
What constraints do these characteristics impose on document parsing and chunking
Official policy documents mostly follow standard official document formatting, with clear title hierarchies. Some attachment tables have merged cells, so parsing must accurately identify hierarchies to avoid chunking confusion. Policy document updates have no fixed cycle, and the page count of a single uploaded document varies widely. Some older policy documents use scanned format, requiring adaptation for non-text parsing logic. Performance parameter tables in attachments include multi-dimensional numerical fields. Chunking must preserve field correlation to avoid semantic fragmentation after splitting. Advanced chemical material policies often involve specialized terminology and units of measurement, so chunking must retain contextual connections to ensure terminology accuracy during Q&A.
How to set configurations
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
chunkSize | 800–1200 characters | Advanced chemical material policy documents contain specialized terminology and long paragraphs. This range preserves the semantic integrity of individual policy clauses and avoids splitting terminology |
chunkSplitter | By title and paragraph boundaries | Policy documents have clear title hierarchies. Splitting this way preserves the independence of clauses, enabling accurate matching of policy entries during subsequent Q&A |
customPdfParse | Enabled | Some policy documents include attachment tables with merged cells. Enabling custom parsing accurately extracts table content and prevents data loss |
UPLOAD_FILE_MAX_SIZE | 1000 MB | Covers most single-upload policy document packages, including large documents with multi-page scanned attachments |
PARSE_FILE_TIMEOUT_SECONDS | 600 seconds | Adapts to the parsing time of large scanned policy documents, avoiding forced termination mid-process |
chunkSettingMode | Manual configuration | Advanced chemical material policy documents have large structural differences. Manual configuration allows flexible adjustment of chunking rules to adapt to different document types |
Three common mistakes
- Issue: Parsing interrupts when uploading large batches of policy documents, with no clear error logs in the backend. Cause: The
UPLOAD_FILE_MAX_SIZEandPARSE_FILE_TIMEOUT_SECONDSconfigurations are not adjusted. Excessively large single uploads or parsing times exceeding default thresholds trigger forced termination. - Issue: Table content is missing after PDF parsing, and performance parameter tables in attachments cannot be read normally. Cause:
customPdfParseis not enabled. The default parsing logic cannot recognize policy attachment tables with merged cells. - Issue: The model response does not reference uploaded policy document content. Cause:
chunkSizeis set too small, leading to loss of contextual connection after policy clauses are split, so the model cannot match complete policy basis.
How to confirm configurations are correct
- Upload a typical advanced chemical material policy document, and verify that the parsed text fully extracts document numbers, clause content, and attachment tables.
- Check that the uploaded file size is within the range specified by
UPLOAD_FILE_MAX_SIZEto confirm no file size limit is triggered. - Submit a policy-related query, and verify that the matching degree between the response content and the uploaded document clauses meets business requirements.
- Check the
PARSE_FILE_TIMEOUT_SECONDSconfiguration duration to ensure no timeout interrupt occurs during parsing of large documents.
The values provided above are common starting points, and should be evaluated against your own specific 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.