What this category of data looks like
Data sources for this category include resin batch property sheets, injection molding machine operating parameters, mold temperature controller data, MES system records, and dimensional and appearance inspection results. Daily documents cover injection molding process cards, raw material drying records, mold history logs, first-piece inspection forms, patrol inspection records, and material change and machine cleaning records. Data updates occur per production batch, each mold change or material change, and once per shift. Document fields include raw material parameters, equipment operating values, inspection results, and more. Units include degrees Celsius, megapascals, kilograms, and others.
Constraints Imposed on Document Parsing and Chunking by These Characteristics
Short, frequently updated documents such as raw material drying records and material change and machine cleaning records must be adapted for high-frequency parsing scenarios. Long documents such as injection molding process cards and mold history logs require accurate chapter structure splitting. Most data fields are numerical parameters. When chunking, the association between adjacent fields must be retained to avoid breaking parameter logic. Parsing and adaptation requirements differ across document formats, such as Excel patrol inspection forms and PDF process cards, so targeted processing of table and paragraph split boundaries is needed. The once-per-shift update frequency requires the parsing process to have fast response capabilities, to avoid delays that impact production audit efficiency. Additionally, the need for unified formatting across multi-source data creates requirements for standardized post-parsing chunks.
Configuration Settings
The following configurations are based on FastGPT v4.17.0.
| Configuration Item | Recommended Setting | Rationale for This Setting |
|---|---|---|
chunkSize | 800–1200 characters | Adapt to the field and paragraph lengths of documents such as injection molding process cards and patrol inspection forms, avoid breaking the association logic of numerical parameters |
chunkSplitter | Split by title + paragraph | Match the chapter title structure of injection molding documents, retain the contextual association of process steps and inspection items |
customPdfParse | Enable table structured parsing | Adapt to parameter tables in injection molding process cards and mold history logs, extract complete field information |
PARSE_FILE_TIMEOUT_SECONDS | 120 seconds | Meet the parsing time requirements of large mold history logs and multi-page process cards, avoid timeout interruptions |
chunkSettingMode | Manual configuration | Adjust chunking rules for different document types such as Excel patrol inspection forms and PDF process cards, adapt to multi-source data formats |
Three Common Misconfigurations
- The number of retrieval results is less than the valid entries in the uploaded Excel file, and matching data for specified parameters cannot be filtered out. The cause is that complete field information of the Excel table was not retained during chunking, causing some filter conditions to fail to match.
- After uploading a multi-page PDF process card, the parsing status shows timeout. The cause is that the
PARSE_FILE_TIMEOUT_SECONDSparameter was not adjusted, and the parsing duration of large documents exceeded the default threshold. - The chunking result does not include chapter title information, only retaining body content. The cause is that
chunkSplitterwas not configured to split by title + paragraph, resulting in loss of contextual association.
How to Verify Proper Configuration
- Upload a single injection molding process card PDF, check the parsed chunk content, confirm that chapter titles and corresponding paragraphs are fully included in the same chunk or adjacent chunks.
- Upload an Excel patrol inspection form containing multiple sets of numerical parameters, perform a retrieval test, verify that complete matching results can be returned based on field parameters.
- Upload a large mold history log document, wait for parsing to complete, confirm that no timeout error occurs.
- Compare the chunking results of different document types, confirm that the chunking rules adapt to the structural characteristics of the corresponding documents.
The values provided here are common starting points and should be validated against samples relevant to the target deployment.