Data characteristics of this category
Data sources include popular science materials for farmers, feed marketing supporting materials from financial institutions, test reports from feed ingredient suppliers, and public industry standard documents. Update cycles adjust based on raw material market fluctuations and new formula development progress, with no fixed schedule. Document formats include PDF product manuals, Excel ingredient inventory logs, and Word marketing script templates. Fields include ingredient identifiers, nutrition metric values, and ratio parameters. Units use professional standard units related to weight and energy.
Constraints on document parsing and chunking
Mixed multi-source document formats including PDF manuals, Excel logs, and Word templates require adapted parsing logic. This prevents row and column data from Excel tables from being split into scattered paragraphs. Nutrition metric fields include attached professional units. Parsing must retain the binding relationship between values and units, to avoid missing units after information splitting. Marketing materials contain both long paragraph scripts and short entry selling points. Chunking must balance semantic completeness and independent recall of single content items. Documents with no fixed update cycle need to support chunking marked by document version, to enable incremental synchronization for subsequent knowledge bases.
Configuration settings
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
UPLOAD_FILE_MAX_SIZE | 200–800 MB | Feed industry ingredient inventory logs and formula manuals often contain multiple sets of batch data. Single file size is larger than general marketing documents |
Chunk Length | 700–1100 characters | Balance semantic completeness of nutrition metric row data and long paragraph marketing scripts, avoid fragmented single chunk content |
PARSE_FILE_TIMEOUT_SECONDS | 120–180 seconds | Parsing large Excel inventory logs requires longer processing time, prevent parsing interruptions caused by timeouts |
PARSE_EXCEL_ENABLE_TABLE_PARSE | Enabled | Excel format logs for feed documents contain structured ingredient composition data. Enabling this setting allows complete extraction of row and column information |
chunkOverlap | 50–80 characters | Retain overlapping content between chunks, prevent nutrition metrics and context from being split apart |
Similarity Threshold | 0.65–0.75 | Filter low-relevance marketing content fragments, focus on valid information related to feed ingredients and formulas |
The parameter values provided on this page are common starting points for configuration. Actual values are affected by material format, data volume and business rules. Specific issues require specific analysis. It is recommended to test on your own samples before finalizing settings.
Three common configuration mistakes
- Phenomenon: After uploading Excel feed ingredient inventory logs, parsing results only display scattered text, with no complete table row and column structure. Cause: The
PARSE_EXCEL_ENABLE_TABLE_PARSEconfiguration is not enabled, causing structured table data to be treated as ordinary text and split. - Phenomenon: In parsed chunked content, nutrition values and their corresponding units are separated, unable to form complete metric information. Cause: Parsing logic that retains unit binding is not configured, or segment length is set too short, causing units to be split into adjacent chunks.
- Phenomenon: Parsing tasks time out and fail when processing large PDF feed product manuals. Cause:
PARSE_FILE_TIMEOUT_SECONDSis not adjusted to the applicable value range. The default timeout duration is insufficient to handle large multi-page documents.
How to verify correct configuration
- Upload a feed Excel inventory log with merged headers, check if the parsing result retains complete row and column structure and header association information.
- Randomly select a long script document containing nutrition metrics and units, check if chunked content contains complete semantic units, with no split metric and unit combinations.
- View background logs of parsing tasks, confirm no timeout errors occur, and task completion duration falls within the configured timeout range.
- Test the chunk overlap configuration, check if transitional overlapping content exists between adjacent chunks, to prevent core information from being split apart.
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.