What This Category of Data Looks Like
Data for administrative service consultation and response in the infrastructure construction sector comes primarily from full-cycle government service ledgers, construction technical documents, and acceptance and filing documents. Data updates as projects advance or new government service requests are submitted. Single-update volume fluctuates based on project phase. Most documents are a mix of structured and semi-structured content, including fields such as request number, submitting entity, response content, associated project code, and construction section parameters. Attached files often include CAD drawings, construction specification PDFs, and measurement schedule spreadsheets. Field units use engineering-specific units such as meters, cubic meters, and workdays.
Constraints on Document Parsing and Chunking
This category uses mixed document structures. The parsing process must adapt to text, tables, and engineering drawing attachments simultaneously. It must not break contextual links between construction terminology and measurement parameters. Large PDF specification files and CAD drawings increase parsing time. Longer timeout thresholds are required. Semi-structured ledger data includes strongly associated fields such as associated project codes and construction section numbers. During chunking, the binding relationship between fields and their corresponding content must be preserved. This prevents loss of contextual links after splitting. Real-time updated government service request ledgers require the parsing process to support low-latency batch processing. This avoids delays in ingesting newly submitted consultation responses.
Configuration Settings
Reference only; verify against the target FastGPT release and deployment documentation.
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
chunkSize | 800–1200 characters | Adapts to long technical descriptions in engineering documents, avoiding splitting that breaks contextual associations between construction terminology and parameters |
chunkSplitter | Paragraph + custom delimiters | Adapts to structured segmentation of ledgers and chapter breaks in technical documents. "Construction section" and "request number" can be configured as custom delimiters |
customPdfParse | Enable table recognition + drawing text extraction | Adapts to construction specifications and measurement schedules in PDF format, preserving corresponding relationships between table columns and rows |
PARSE_FILE_TIMEOUT_SECONDS | 120–180 seconds | Adapts to parsing time for large CAD drawings and long PDF specifications, preventing parsing failures due to timeout |
UPLOAD_FILE_MAX_SIZE | 500 MB | Meets upload requirements for full set of construction drawings and filing documents for large-scale projects |
chunkSettingMode | Manual configuration | Allows separate adjustment of chunking parameters for different document types (ledgers, drawings, specifications) to adapt to mixed-format scenarios |
Three Common Configuration Errors
- Symptom: After uploading large CAD drawings or long PDF specifications, the interface displays parsing failure, and the backend log returns a timeout status code. Cause: The
PARSE_FILE_TIMEOUT_SECONDSparameter is not adjusted. The default timeout duration is insufficient to complete parsing of large engineering documents. - Symptom: After parsing a measurement schedule spreadsheet, chunked content loses the corresponding relationship between table columns, and some fields are empty. Cause: The table recognition function of
customPdfParseis not enabled, and only the default text parsing logic is used to split content. - Symptom: After configuring a custom JS script to process parsing results, the final chunked content is not modified as expected, and no corresponding execution logs are generated. Cause: The option to enable custom parsing scripts is not turned on in
chunkSettingMode, or the script is not bound to the document parsing task for this category.
How to Verify Successful Configuration
- Upload a single large PDF specification file under 500 MB, wait for parsing to complete, then check the chunked results to confirm that construction terminology is not incorrectly split.
- Upload a measurement schedule document containing tables, check whether the chunked content preserves the corresponding relationship between table rows and columns, with no missing fields.
- Adjust the
PARSE_FILE_TIMEOUT_SECONDSparameter, then upload a large CAD drawing to confirm that no timeout errors occur during the parsing process. - Configure a custom JS script and bind it to the current parsing process, upload a test document, then check whether the chunked results are modified as required by the script.
The values listed above are common starting points, and should be evaluated against in-house test 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.