What the data for this category looks like
Paint and ink industry investment research data primarily comes from supplier technical documents, raw material MSDS reports, weekly industry capacity reports, formula development manuals, and price monitoring reports. Update frequency varies significantly by data type: raw material price weekly reports are updated weekly, formula documents are updated irregularly alongside process iterations, and industry reports are released quarterly. Document structures include multi-column structured tables, long-form technical descriptions, and scattered parameter entries. Core fields include solid content, viscosity, fineness, and VOC content, with corresponding units of mass fraction, mPa·s, μm, and g/L.
What constraints these characteristics impose on the "document parsing and chunking" process
The presence of multi-column structured tables requires the parsing stage to preserve relational relationships between cells, to avoid field misalignment after splitting. The mixed structure of long-form technical descriptions and scattered parameter entries requires chunking to balance contextual coherence, rather than only using fixed character-length hard splits. Mixed upload scenarios for multiple document types require parsing configurations to cover common formats including xlsx, docx, and pdf. Frequently updated raw material data requires batch parsing to avoid reloading historical files, to ensure the timeliness and accuracy of knowledge base content. Some documents contain special units and parameter definitions; chunking must preserve the binding relationship between units and parameters to prevent semantic confusion during subsequent retrieval.
How to set the configurations
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
segment_length | 800–1200 characters | Adapts to the length of cross-row parameter groups and technical descriptions in paint and ink documents, balancing contextual coherence and chunk granularity |
table_parsing_mode | retain original structure | Prevents loss of field associations when splitting multi-column raw material ratio, cost composition tables |
PARSE_FILE_TIMEOUT_SECONDS | 300 seconds | Adapts to the parsing time required for large-capacity technical manuals and batch reports, preventing timeout errors |
auto_chunk_trigger_rule | by paragraph boundaries | Aligns with the content structure of industry documents divided by chapters and parameter groups, reducing logical block splitting |
UPLOAD_FILE_ALLOWED_EXTENSIONS | includes xlsx, docx, pdf | Covers common upload formats for raw material reports, technical documents, and industry reports |
batch_parsing_isolation_switch | enabled | Avoids loading previously uploaded documents during batch parsing, ensuring the current task only processes target files |
The parameter values provided on this page are conventional recommendations used as a starting point for configuration. Actual values are affected by material form, data volume, and business rules. Specific issues require targeted analysis, and it is recommended to test against your own samples before finalizing settings.
Three common mistakes
- Cell content misalignment and lost field associations after parsing xlsx format raw material reports: The
table_parsing_modewas not configured to retain the original structure, and table content was only split by character boundaries. - Auto-chunked segments only contain single-row raw material data, with corresponding process descriptions missing: The
segment_lengthwas set too small, failing to cover complete cross-row parameter groups. - Batch parsing tasks return 504 timeout status codes, or parsing results include previously uploaded documents: The
PARSE_FILE_TIMEOUT_SECONDSwas not adjusted to a value suitable for large-capacity reports, or the batch parsing isolation switch was not enabled.
How to confirm the configuration is correct
- Upload a single xlsx format raw material ratio report, check if the parsed segments retain complete multi-column fields and cell associations.
- Upload a long-form technical manual, verify that chunks are divided by chapter or parameter group, with no forced splitting across logical blocks.
- Upload a large-capacity pdf industry report, confirm that the parsing task completes within the preset duration without timeout errors.
- Enable the batch parsing function, upload a single target file, and confirm that the parsing results only include content from the currently uploaded file, with no historical documents included.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-14.