What this type of data looks like
Data sources for chemical fiber research reports include public industry association reports, brokerage industry research reports, and supply and demand briefings from commodity trading platforms. Update cadence follows two schedules: monthly full industry overview reports, and weekly price and supply-demand dynamic briefings. Document structures are mostly mixed, including body paragraphs, nested tables, multi-page continuous data tables, and formulaic supply and demand balance sheets. Some research reports include Excel attachments with segmented category data. Fields include total production capacity, monthly output, monthly total import and export volume, average raw material purchase price, and downstream order fulfillment volume. Corresponding units are ten thousand tons, ten thousand tons, ten thousand tons, yuan/ton, and unit respectively.
What constraints do these characteristics impose on document parsing and chunking?
Multi-page continuous tables and nested tables require the parsing process to retain row-column associations and contextual coherence, to avoid splitting critical data blocks. High-frequency updated documents uploaded in batches require the parsing process to support large files and batch tasks, to avoid timeout interruptions. Differences in field units across different data sources require retaining original units, to avoid unit confusion during matching. Merged cells and hidden column data in Excel attachments require the parsing process to identify and extract complete content, to avoid missing segmented category baseline data.
Configuration Settings
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
PARSE_TABLE_MERGE_CELL | Enabled | Chemical fiber research report tables often use merged cells to mark category classifications. Retaining row-column associations avoids chaotic data splitting |
UPLOAD_FILE_MAX_SIZE | 2000 MB | Adapts to the file size of batch-uploaded industry research report collections, avoids upload interruptions |
CHUNK_SIZE | 800–1000 characters | Structured data blocks in chemical fiber research reports are moderately sized, avoids splitting critical supply-demand related content |
PARSE_EXCEL_HIDDEN_ROW | Retain | Some research report Excel files hide baseline data columns. Retaining hidden columns allows extraction of complete segmented category data |
PARSE_TIMEOUT_SECONDS | 900 seconds | Large PDF and Excel files take longer to parse, avoids mid-process timeouts |
RECALL_CHUNK_COUNT | Top 8 entries | Segmented data in chemical fiber research reports has strong relevance, a small number of recalls can cover core information |
The parameter values provided on this page are common starting points for configuration setup. Actual values are affected by material form, data volume, and business rules. Specific issues require specific analysis. It is recommended to test on your own samples before finalizing settings.
Three Common Misconfigurations
- When uploading chemical fiber research report Excel files, RAG retrieval returns fewer overseas usage location data entries than the source file. The cause is that cross-cell association extraction configuration was not enabled during parsing, and only isolated data from individual cells was extracted.
- When uploading PDF research reports with more than 50 pages per document, the interface returns a
504 Gateway Timeouterror. The cause is that thePARSE_TIMEOUT_SECONDSparameter was not adjusted to a value suitable for large document sizes. - Chunked content only includes body paragraphs, and does not include table headers or section titles, resulting in failure to match associated industry classification information during retrieval. The cause is that configuration items for table header splicing and section title embedding into chunks were not enabled.
How to Verify Correct Configuration
- Upload the largest-sized single chemical fiber research report file, check if the parsing status shows completed, with no timeout or format error prompts.
- Upload Excel research reports containing merged cells and hidden columns, verify that the parsed text includes complete row-column data and segmented category information.
- Initiate a RAG retrieval, confirm that the returned results include specified segmented category data and associated section information.
- View the chunk details page, confirm that each chunk includes the section title and table header information of the corresponding document.
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.