What Data for This Category Looks Like
Thermal coal financing daily report data comes from domestic coal port trading platforms, futures exchange delivery data, and daily industry association summaries. Documents are released daily on a T+1 basis. Most files use Excel or standardized PDF formats. They include fields such as daily transaction prices, port inventory levels, financing credit limits, and freight rates. Valid units include yuan/ton, 10,000 tons, and 100 million yuan. Core details such as production origin, trading entities, and delivery dates are also included.
Constraints on Document Parsing and Chunking
Daily updated documents have fixed structures but dense fields and mixed data types. Processing must avoid splitting associated fields across multiple cells. Numeric fields include units. Processing must retain the binding between units and corresponding data to prevent unit misalignment after parsing. Batch processing of multiple daily reports requires stable parsing speed. Processing must avoid queue blocking caused by frequent updates. Some documents use merged headers. Processing must accurately identify the correspondence between headers and data rows to prevent incorrect field mapping.
Configuration Settings
This configuration applies to the knowledge base module of FastGPT v4.8.12-alpha open source version.
| Configuration Item | Recommended Range | Rationale |
|---|---|---|
maxChunkSize | 800–1200 characters | Thermal coal financing daily reports have dense fields. Retain complete context for individual transactions to avoid splitting critical numeric values and associated descriptions |
chunkOverlap | 100–150 characters | Retain overlapping content between adjacent chunks to prevent split transaction information from being disconnected |
parseExcelMergeCell | Enabled | Most daily report documents have merged headers. Enabling this option accurately identifies the field range corresponding to merged cells |
PARSE_FILE_TIMEOUT_SECONDS | 120 seconds | Batch processing of multiple daily reports prevents task failure from excessively long parsing times |
UPLOAD_FILE_MAX_SIZE | 20 MB | Adapt to the size of most single daily report files, while supporting batch upload scenarios |
enableFieldUnitBind | Enabled | Ensure that numeric fields are bound to corresponding units and date information to prevent data misalignment after parsing |
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. It is recommended to test on your own samples before finalizing settings.
Three Common Mistakes
- After uploading Excel-format thermal coal financing daily reports, some merged cell fields appear empty or have incorrect mappings. This occurs when the Excel merged cell parsing configuration is not enabled, preventing the system from identifying the correspondence between cross-cell headers and data.
- When configuring chunk length, critical financing information is truncated or context becomes disconnected. This happens when chunk parameters are not adjusted for the dense field characteristics of thermal coal financing daily reports, resulting in individual chunks failing to hold complete transaction-associated information.
- Parsing fails due to timeout when uploading documents larger than 10 MB. This occurs when the parsing timeout parameter is not adjusted, as the default duration is insufficient for text extraction and structured processing of large files.
How to Verify Proper Configuration
- Upload a single standard-format thermal coal financing daily report, check the parsed structured fields, and confirm that merged cell headers and data are correctly mapped.
- Test uploads with different chunk lengths, verify that chunked results retain complete price, financing limit, and corresponding unit information for individual transactions.
- Upload multiple daily report documents in batch, check the execution status of the parsing task queue, and confirm there are no frequent timeouts or failures.
- Adjust the chunk overlap parameter, verify that overlapping content between adjacent chunks matches expectations, and prevent critical information from being disconnected.
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.