What Data for This Category Looks Like
Special steel research report data primarily comes from industry reports published by authoritative industry institutions, internal operational documents of various special steel production enterprises, and supply and demand analysis materials publicly released by third-party industry research institutions. The update rhythm falls into three categories: monthly market quotation reports, quarterly capacity statistics documents, and annual industrial development white papers. Information related to policies and new production capacities is released irregularly. Documents typically include raw material cost composition, product grades and specifications, mechanical performance parameters, market transaction volume and prices, downstream application field proportions, and other content. Field units cover multiple identifiers such as tons, yuan/ton, MPa, and others.
What Constraints Do These Characteristics Impose on the Document Parsing and Chunking Link?
Special steel research reports contain a large number of detailed technical parameter tables. Parsing must avoid splitting table structures, as this will cause a disconnect between technical parameters and their descriptions. Multi-dimensional fields and units require retaining contextual associations during chunking, to prevent single-parameter chunks from failing to match retrieval needs. Some research reports are in scanned format, so image text recognition functionality must be supported. Single annual research reports have a large number of pages, leading to long parsing times, so timeout settings must be adjusted to match file scale. Analysis paragraphs about downstream application proportions are lengthy, and fixed-length chunking risks damaging logical integrity, so chunking rules must be optimized based on document structure.
How to Set Configurations
| Configuration Item | Recommended Value Range | Rationale |
|---|---|---|
chunk_size | 800–1200 characters | Special steel research reports contain dense technical parameters and industry analysis. This range preserves the integrity of individual technical descriptions or market analyses |
chunk_overlap | 150–200 characters | Technical parameters in special steel research reports are often accompanied by contextual descriptions. The overlapping range prevents parameters and their descriptions from being split into different chunks |
PARSE_TABLE_MODE | structured_only | Tables in special steel research reports mostly consist of structured grade, performance, and quotation data. Prioritizing structured content extraction avoids format confusion |
PARSE_FILE_TIMEOUT_SECONDS | 120 seconds | Single annual special steel research reports have a large number of pages, leading to long parsing times. This duration covers the parsing needs of most standard files |
ENABLE_OCR | auto | Some special steel research reports are scanned PDFs. Automatically triggering OCR enables recognition of technical data and tables embedded in images |
UPLOAD_FILE_MAX_SIZE | 500 MB | Single special steel annual research report files are large in size. This upper limit meets the upload needs of most files |
The parameter values provided on this page are all conventional recommendations, used as a starting point for configuration. Actual values are affected by material form, data volume, and business rules. Specific issues require specific analysis, and it is recommended to test on your own samples before finalizing settings.
Three Common Mistakes
- Phenomenon: After uploading some special steel research report PDFs, content cannot be recognized, and the interface displays parsing failure. Cause: The
ENABLE_OCRconfiguration is not enabled, and scanned special steel research reports cannot be read by the text parsing engine. - Phenomenon: After uploading a special steel research report, the parsing node has no working records, and the log returns
413 Request Entity Too Large. Cause: TheUPLOAD_FILE_MAX_SIZEconfiguration is not adjusted, and single special steel research report files often exceed the default upload limit. - Phenomenon: Parsed special steel grade tables have misaligned fields and cannot be matched for retrieval normally. Cause: Chunking did not set a reasonable
chunk_overlap, splitting the table header and data rows into different chunks.
How to Confirm Configurations Are Correct
- Upload a scanned special steel research report, check whether the parsing result includes the grade and quotation data in the image, to confirm that the
ENABLE_OCRconfiguration is effective. - Upload a special steel monthly research report containing multi-page structured tables, check whether the chunking result retains the complete table structure, to confirm that the
PARSE_TABLE_MODEconfiguration is correct. - Retrieve the mechanical performance parameters of a special steel grade, check whether the recalled results include the parameters and their corresponding application scenario descriptions, to confirm that the
chunk_overlapconfiguration is reasonable. - Check the background logs of the parsing task, confirm that the task duration does not exceed the set value of
PARSE_FILE_TIMEOUT_SECONDS, to confirm that the timeout configuration matches the file size.
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.