What Data Looks Like for This Category
Documents related to business processes in the basic chemical industry mainly come from internal enterprise production operation procedures, safety compliance documents, Material Safety Data Sheets (MSDS), project approval materials, and equipment maintenance records. Organizations update documents in line with compliance requirements and synchronize updates with new project launches, with no fixed cycle, but single updated documents have a relatively long length. Most documents contain fixed fields such as material number, safety level, and operation steps. Common units include tons, kilograms, MPa, and ℃. Some documents embed complex material balance formulas and multi-column data tables.
Constraints on Document Parsing and Chunking
Long production procedures and project documents, if chunked improperly, split the contextual logic of operation steps, affecting the coherence of subsequent process guidance. Embedded material balance formulas and multi-column tables place higher requirements on the parsing tool’s format restoration capability. Parsing failures cause loss of key data. The presence of fixed fields and dedicated units requires retaining the association between fields during chunking, to avoid field misalignment after splitting. Accurate extraction of complex compliance parameters directly determines the compliance of business process guidance; parsing deviations cause errors in subsequent processes.
Configuration Settings
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
chunkSize | 800–1200 characters | Adapt to the layout of long operation paragraphs and material balance formulas in basic chemical documents, avoiding overloaded single chunk content or contextual disconnection |
chunkSplitter | By paragraph + title anchor | Match the chapter-based structure of chemical documents, retain the association between operation steps, compliance clauses and corresponding fields |
customPdfParse | Enabled | Support restoration of complex formulas and multi-column tables, adapt to embedded formats in Material Safety Data Sheets and production procedures |
PARSE_FILE_TIMEOUT_SECONDS | 300–600 seconds | Address parsing time consumption of long basic chemical documents, avoid interrupting the parsing process due to timeout |
UPLOAD_FILE_MAX_SIZE | 1000 MB | Adapt to the upload requirements of large-capacity project documents and maintenance records in the basic chemical industry |
chunkSettingMode | Manual mode | Allow adjustment of chunking rules for different types of documents such as MSDS and production procedures, to adapt to field association requirements |
Three Common Misconfigurations
- Phenomenon: An error message "Unable to read the file content" is returned when clicking chunk preview for PDF documents in the knowledge base. Cause: The
customPdfParseconfiguration is not enabled, so complex formulas or multi-column tables embedded in chemical documents cannot be parsed, leading to parsing failure. - Phenomenon: Complex formulas can be returned normally in the online version, but parsing fails in the local version. Cause: The locally deployed FastGPT v4.17.0 version is inconsistent with the online version, and no dedicated parsing component adapted to chemical formula parsing is configured, resulting in missing formula parsing logic.
- Phenomenon: Runtime errors occur when deploying the dedicated parsing component via Docker. Cause: GPU resources are not mounted correctly, or the image version does not match the dependency requirements for basic chemical document parsing, causing the parsing component to fail to start normally.
How to Verify Correct Configuration
- Upload a basic chemical PDF document containing complex formulas and tables, check whether the parsed text format completely restores the formula and table structures.
- Adjust the value range of
chunkSize, verify whether the chunking results under different lengths retain the contextual association of operation steps. - Check the
PARSE_FILE_TIMEOUT_SECONDSconfiguration, upload a single large-capacity document, confirm that the parsing process does not experience timeout interruptions. - Switch
chunkSettingModeto manual mode, test the adaptation effect of chunking rules for different types of chemical documents.
The values given 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.