What data for this category looks like
Cement marketing and business documents primarily originate from manufacturer product manuals, regional bidding documents, industry association supply and demand reports, and dealer promotional materials. Data updates follow project bidding cycles and quarterly market research milestones. Document formats include PDFs with parameter tables, mixed-text-and-image promotional brochures, and structured quotation sheets. Core fields include strength grade, compressive strength, setting time, bulk/bagged specifications, with corresponding units such as MPa, hours, tons, and others.
Constraints imposed on document parsing and chunking
The structured parameter tables, scattered mixed business fields, and mixed-text-and-image promotional material formats of cement documents create multiple constraints for parsing and chunking. The row and column association structure of tables must be preserved to avoid breaking the binding between parameters and their corresponding values. When long-text bidding documents and short promotional materials are input together, document types must be distinguished to match appropriate chunking logic. Differences in unit expressions across documents require the parsing step to first identify units before aligning chunks. For mixed-text-and-image promotional materials, layout partitioning must be completed first before extracting corresponding text blocks for chunking.
How to configure the system
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
PARSE_FILE_TIMEOUT_SECONDS | 1200 seconds | Cement documents often include multi-page bidding files and long tables, requiring sufficient parsing time |
UPLOAD_FILE_MAX_SIZE | 1000 MB | Supports batch uploading of large documents such as regional market research reports |
chunk_size | 800–1200 characters | Adapts to the average length of cement parameter tables and business paragraphs, avoiding splitting parameter binding relationships |
enable_table_parse | Enabled | Preserves the row and column structure of cement product parameter tables to avoid losing field associations |
similarity_threshold | 0.75 | Filters redundant chunks with low similarity, adapting to repeated parameter expressions in cement marketing documents |
chunk_overlap | 100–150 characters | Preserves contextual association between chunks, avoiding splitting cross-chunk business logic |
The parameter values provided on this page are common recommended starting points for configuration. Actual values are affected by material format, data volume, and business rules. Specific issues require targeted analysis, and it is recommended to test on your own samples before finalizing settings.
Three common configuration mistakes
- Phenomenon: After uploading a cement industry PDF document, the data processing status shows completed but search test results are empty. Cause: The
enable_table_parseconfiguration is not enabled, resulting in structured parameter tables not being correctly extracted, and only meaningless plain text fragments being retrieved. - Phenomenon: In a local deployment scenario, after uploading a multi-page cement bidding PDF, the data processing progress gets stuck at 90% with no further feedback. Cause: The
PARSE_FILE_TIMEOUT_SECONDSconfiguration is not adjusted, and the default timeout duration is insufficient to complete table parsing and chunking for long documents. - Phenomenon: Some cement marketing PDFs have no parsing feedback after upload, and the system log returns a 413 Request Entity Too Large error. Cause: The
UPLOAD_FILE_MAX_SIZEconfiguration is not adjusted, and large-volume documents exceeding the default limit are directly blocked.
How to confirm proper configuration
- Upload a single-page PDF of cement product parameters, and check whether the parsed text blocks retain the corresponding relationships between parameters such as strength grade and compressive strength.
- Upload a cement bidding document containing multi-page tables, and verify whether the data processing duration matches the configured expected duration.
- Perform a search test, enter keywords related to cement strength grades, and confirm that the returned results include matching parameter content.
- Check the system log to confirm that no 413 or timeout error codes appear.
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.