What Data in This Category Looks Like
Data for this category originates from special equipment safety supervision systems, inspection and testing institution systems, user account ledgers, and operator certificate databases, with a monthly update frequency. Commonly processed documents include equipment use registration certificates, periodic inspection reports, maintenance records, hidden danger rectification notices, accident reports, and operator certificates. Most document structures include fields such as equipment number, inspection cycle, maintenance node, rectification requirements, and certificate validity period. Some documents are structured tables or multi-page compliance documents.
Constraints for Document Parsing and Chunking
Batch documents updated monthly have format variations, with structured tables and long text reports mixed together. Precise splitting of corresponding business fields is required. Core supervision fields such as equipment number and inspection cycle must retain contextual association, and must not be split across chunks. Multi-page certificates and reports must be split by page or logical paragraph to avoid loss of cross-page information. When uploading batch files, adaptation to different document lengths is needed. This prevents individual chunks from exceeding the vector model’s supported length range, while also avoiding overly fine-grained chunking that causes contextual breaks. Compliance requirements for supervision documents require complete retention of rectification instructions and feedback content. Key constraint items must not be omitted during chunking.
Configuration Settings
For FastGPT v4.17.0, document parsing and chunking rules can be adjusted using the following configuration items:
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
chunkSize | 800–1200 characters | Adapts to the input length limits of most vector models, while retaining core context such as equipment inspection cycles and rectification requirements |
chunkSplitter | Split by paragraph + title | Matches the logical boundaries of structured paragraphs such as equipment numbers and inspection items in documents, avoiding splitting of associated fields |
customPdfParse | Enable structured parsing | Extracts tables and fixed-format fields from PDFs, retaining the original typesetting structure of maintenance records and certificate information |
UPLOAD_FILE_MAX_SIZE | 1000 MB | Adapts to monthly updated batch upload document packages, preventing parsing timeouts caused by overly large single files |
PARSE_FILE_TIMEOUT_SECONDS | 600 seconds | Covers the parsing time of multi-page long reports, preventing interruptions during large file parsing |
chunkSettingMode | Manual configuration | Adjusts chunking rules for the special structure of supervision documents, adapting to different types of business files |
Three Common Misconfigurations
- Symptom: Individual chunk content exceeds the vector model’s input limit, resulting in vectorization failure. Cause: The
chunkSizewas not adjusted based on the input length supported by the model, causing long paragraphs to be fully included in a single chunk. - Symptom: Some chunks fail vectorization after uploading a large batch of files, and recover after retries. Cause: The uploaded file exceeds the system’s default parsing threshold, triggering temporary timeouts during parsing of some chunks; retries can reset the parsing process.
- Symptom: Fields are missing or misaligned after structured table parsing. Cause: Structured parsing mode for
customPdfParsewas not enabled, and splitting directly as plain text caused loss of table structure.
How to Verify Proper Configuration
- Upload a single typical document (such as a periodic inspection report) and check the chunk preview interface to confirm that core fields such as equipment number and inspection cycle are not split across chunks.
- Check the uploaded file size limit configuration to ensure that the maximum monthly batch upload file package does not exceed the configured threshold.
- Test parsing a multi-page certificate file to confirm that certificate information for each page is fully retained in the corresponding chunk, with no cross-page information loss.
- Review the parsing logs to confirm that the configured duration of
PARSE_FILE_TIMEOUT_SECONDScovers the parsing time of the largest file, with no timeout errors.
The values provided here 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.