What data for this category looks like
The typical entities in this category are electroplating plants, electronic connector and hardware surface treatment workshops. Daily generated documents include bath solution analysis records, process parameter cards, fixture usage logs, film thickness and adhesion reports, hazardous waste management ledgers, wastewater monitoring records, and more. Data sources include customer surface treatment specifications, bath solution test results, rectifier operating data, online water quality monitoring results, and hazardous waste management system ledgers. Update frequencies cover per bath cycle, per shift, and fixed monitoring cycles. Document fields include tank number, chemical concentration, current value, temperature, film thickness values, etc., most with standardized units.
Constraints on document parsing and chunking
The multi-type document structure and high-frequency update characteristics of this category impose multiple constraints on the document parsing and chunking process. First, documents cover structured Excel spreadsheets, formatted PDF process cards, and scanned ledger files, so parsing rules must adapt to different formats. Second, high-frequency updated bath cycle data and monitoring records require chunking rules to retain complete parameter associations for a single bath cycle, avoiding splitting across critical data rows. Third, fields with standardized units (such as concentration g/L, film thickness μm) must retain the binding relationship between fields and units after parsing to prevent semantic splitting. Finally, hazardous waste management ledgers must fully retain compliance-related fields without omitting key information.
How to configure
The following configurations are based on FastGPT v4.17.0, and are tailored to the document characteristics of electroplating and chemical surface treatment scenarios:
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
chunkSize | 800–1200 characters | Adapts to the field density of bath solution analysis records and process parameter cards, avoiding splitting complete parameter groups for a single bath cycle |
chunkSplitter | Split by paragraph + heading | Retains the hierarchical structure of documents, adapting to the step associations of process cards and the entry logic of hazardous waste ledgers |
customPdfParse | Enable OCR mode (for scanned documents) | Adapts to non-editable PDF formats of scanned hazardous waste ledgers and some process cards, restoring complete text content |
PARSE_FILE_TIMEOUT_SECONDS | 600 seconds | Covers the parsing time required for batch-uploaded bath cycle records and large hazardous waste ledgers, preventing timeout failures |
UPLOAD_FILE_MAX_SIZE | 1000 MB | Adapts to monitoring record packages uploaded in batches by workshops, meeting the needs of combined multi-file uploads |
chunkSettingMode | Manual configuration | Adjust chunking rules for different document types, supporting mixed uploads of multi-format documents in electroplating scenarios |
Three common configuration errors
- Symptom: After uploading an Excel bath solution analysis record, some numerical fields are empty, and vector index matching results are deviant. Cause: No field extraction rules for structured tables are configured, and the default parsing merges numerical values and units into a single text block, leading to lost semantic associations.
- Symptom: When uploading a scanned hazardous waste ledger PDF, the parsing result has no valid text or the recognized text is chaotic. Cause: OCR mode for
customPdfParseis not enabled, and only blank metadata from the PDF layer is parsed, unable to recognize text in scanned images. - Symptom: Parsing tasks time out and fail when uploading more than 10 bath cycle record files in batches. Cause: The configured value of
PARSE_FILE_TIMEOUT_SECONDSis lower than the total parsing time of batch files, causing the task to terminate early.
How to verify correct configuration
- Upload a single bath solution analysis record Excel file, check if the parsed text blocks include complete tank number, chemical concentration, and detection time fields, with no missing or merged errors.
- Upload a scanned process card PDF, verify that the parsed result includes the original document's text content with no garbled characters or missing key parameters.
- Upload a batch of hazardous waste ledger files, check the completion status of parsing tasks with no timeout errors.
- Adjust
chunkSizeto different ranges, compare the semantic coherence of the resulting chunks, and select the value that fits the current document type.
The values provided are common starting points and should be evaluated against the reader's own samples.