What this category of data looks like
Data for this category comes from engineering construction project approval management systems, construction drawing review systems, enterprise qualification databases, and credit platforms. Commonly processed documents include construction permit application materials, construction drawing review qualification certificates, quality and safety supervision procedure documents, and completion record forms. Most documents use a mixed format of structured forms and technical documents with charts. Daily data updates are performed. Fields include participating unit qualification numbers, project approval document numbers, approval node status, and similar items. No unified fixed units apply, as values vary based on document type.
Constraints on document parsing and chunking
The mixed document format and daily batch update characteristics create multiple constraints for the document parsing and chunking process. First, documents that mix structured forms and technical charts require chunking rules that balance structured field extraction and context retention for unstructured text. This prevents critical approval information from being split apart. Second, daily batches of approval materials require stable parsing efficiency. This prevents single-file parsing timeouts from disrupting overall workflows. Third, cross-document related fields such as participating unit qualification numbers and project approval document numbers require sufficient context to be preserved during chunking. This ensures information integrity for subsequent approval verification processes.
Configuration Settings
Reference only; verify against the target FastGPT release and deployment documentation.
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
chunkSize | 800–1200 characters | Adapts to the mixed structured forms and technical text in this category of documents, avoids splitting critical approval fields, and controls context integrity for individual chunks |
chunkSplitter | Split by paragraph + table boundaries | This category of documents contains large numbers of approval materials with tables. Splitting by table boundaries prevents table content from being misaligned. Splitting by paragraph retains the contextual logic of approval workflows |
customPdfParse | Enabled | Most PDF documents in this category contain technical charts and structured forms related to construction drawing reviews. Enabling custom PDF parsing optimizes table recognition and cross-page content integration |
UPLOAD_FILE_MAX_SIZE | 500 MB | Meets the requirements for batch uploading engineering construction project approval materials, and prevents upload failures for large-volume completion record files |
PARSE_FILE_TIMEOUT_SECONDS | 600 seconds | Matches the parsing time requirements for daily batch data, and prevents parsing timeouts for large construction drawing review files |
chunkSettingMode | Manual configuration | Addresses the mixed format characteristics of this category of documents. Manually adjusting chunking rules adapts to different types of approval materials |
Three Common Configuration Errors
- Parsed content appears empty after uploading a PDF file, and the interface displays a parsing failure status. The cause is that the
customPdfParseconfiguration is not enabled. This prevents recognition of construction drawing-related tables and cross-page text in this category of documents. - File parsing fails during conversation upload, and a 413 status code is returned. The cause is that the
UPLOAD_FILE_MAX_SIZEconfiguration is not adjusted. Large approval materials exceeding the default limit cannot be uploaded for parsing. - Table content becomes misaligned after chunking, with adjacent table rows split across separate chunks. The cause is that the
chunkSplitterconfiguration is not set to split by table boundaries. Direct character-based chunking destroys table structure.
How to Verify Correct Configuration
- Upload a typical construction permit application PDF, and review the parsed chunk results. Confirm that table content is not split apart.
- Upload a single completion record file with a volume close to 500 MB. Confirm that the upload and parsing processes do not produce timeout errors.
- Submit a batch of daily updated approval materials, and review the completion rate of parsing tasks. Confirm that no batch timeouts occur.
- Review the chunked text. Confirm that chunks containing key fields such as participating unit qualification numbers and project approval document numbers are not split.
The values listed 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.