What data for this category looks like
Packaging and printing investment research data mainly comes from industry association research reports, listed printing company financial reports, raw and auxiliary material price disclosure platforms, printing capacity statistics documents, order detail Excel files, and industry standard PDF files. Update frequencies cover daily (raw and auxiliary material prices), weekly (capacity updates), and quarterly/annually (industry reports and financial reports). Document types include long-text research reports, row-and-column structured spreadsheet files, detail documents with batch numbers and material models. Fields include printing thickness (unit: micrometers), grammage (unit: grams per square meter), order volume (unit: ten thousand color impressions), raw material unit price (unit: yuan per ton) and other category-specific fields.
What constraints do these characteristics impose on document parsing and chunking
First, row-structured Excel order sheets and bill of materials, when split by default paragraph rules, will merge multiple rows of data into a single chunk, breaking the integrity of individual data entries. Second, parameter documents with specific units, if parsed without retaining the association between fields and units, will prevent precise information matching during subsequent investment research calls. Third, nested tables and chapter structures in long-text research reports, if the chunking logic does not adapt to the layout, will cause incorrect chunking across chapters and tables. Fourth, when batch importing frequently updated raw and auxiliary material data, parsing timeouts will cause import failures, affecting data update efficiency.
How to Set Configurations
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
Segment Delimiter | \n (Excel/CSV scenarios), \r\n (Windows format documents) | Packaging and printing order sheets and bill of materials are mostly row-structured data. Splitting by line breaks ensures individual data entries are treated as separate chunks |
Segment Max Length | 800–1200 characters | Industry research reports are mostly long texts. This length retains complete chapter logic while avoiding excessively long chunks that harm retrieval accuracy |
Structured File Parsing Mode | Split Table by Rows | Raw and auxiliary material quotation sheets and capacity statistics sheets for packaging and printing mostly use row-and-column structures. Splitting by rows prevents merging multiple rows of data into a single chunk |
PARSE_FILE_TIMEOUT_SECONDS | 600 seconds | Large industry research report PDFs and batch-imported Excel files take longer to parse. This duration covers most conventional import scenarios |
Similarity threshold | 0.7–0.8 | A large number of identical material parameters exist in packaging and printing investment research. This threshold filters redundant duplicate chunks while retaining content for precise matching |
UPLOAD_FILE_MAX_SIZE | 1000 MB | Adapts to batch-imported large industry research report packages, preventing upload failures due to oversized files |
The parameter values provided on this page are common recommended starting points for configuration. Actual values are affected by material form, data volume and business rules. Specific issues require individual analysis. It is recommended to test on your own samples before finalizing settings.
Three Common Mistakes
- Phenomenon: Multiple rows of data are merged into a single chunk after Excel import, failing to achieve the one-row-per-chunk split effect. Cause: Custom segment separators are not configured. The default paragraph recognition logic merges continuous row-structured data into a single chunk.
- Phenomenon: Some material parameter parsing results lose units, such as displaying only numerical values without labels like micrometers or grams per square meter. Cause: Structured file parsing mode is not enabled. The default text parsing splits fields and units into different chunks.
- Phenomenon: After batch uploading PDF research reports, the parsing status of some documents shows
408 Request Timeout. Cause: ThePARSE_FILE_TIMEOUT_SECONDSparameter is not adjusted. Parsing time for large PDF files exceeds the default threshold, causing request timeout.
How to Confirm the Configuration Is Correct
- Upload a single test Excel order file, use the knowledge base preview function to check chunking results, confirm that each row of data is treated as a separate chunk.
- Upload a single-page industry research report PDF with nested tables, check that the chunking results retain the original chapter and table structure, with no cross-chapter chunking.
- Import a material parameter file with specific units, use the knowledge base search function to test, confirm that chunks containing complete parameters and corresponding units can be accurately retrieved.
- Upload a single industry research report package larger than 500MB, check upload and parsing status, confirm no timeout errors and complete chunking results.
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.