What the data for this category looks like
Thermal coal financing daily report data primarily comes from domestic coal industry associations, coastal port transaction ledgers, and Zhengzhou Commodity Exchange thermal coal futures supporting financing announcements. The reports update once per day. Each daily report has a fixed document structure, with six core fields: release date, origin, closing price, annualized financing cost, bank credit limit, and trading entity name. Price units are yuan/ton, financing cost units are annualized percentage, and credit limit units are ten thousand yuan. Individual data entries are clearly structured with no complex nested layers.
What constraints these characteristics impose on the citation sources and traceability workflow
The daily update requirement means the traceability process must automatically match the latest release date field to avoid citing expired data. The strong financial correlation of core fields requires traceability to precisely bind specific origins, trading entities, and issuing institutions, rather than broadly citing general industry content. The fixed document structure and clear unit requirements mean traceability must verify consistency between fields and units, preventing confusion between price and credit limit units. Additionally, the large number of entries per daily report requires controlling the recall and citation scope to avoid irrelevant entries interfering with traceability accuracy.
Configuration Settings
| Configuration Item | Recommended Range | Rationale |
|---|---|---|
similarity_threshold | 0.75-0.85 | Thermal coal financing daily reports have high field precision requirements. This range filters low-relevance general coal data while retaining content strongly related to financing and pricing |
recall_top_k | Top 8-12 entries | Daily reports contain multiple data entries per page. This recall scope covers the day’s core trading and financing information, avoiding omission of key traceability materials |
rerank_top_n | Top 3-5 entries | Financing-related information requires the highest relevance. Reranking retains the 3-5 most precise entries to ensure traceability snippets focus on core business content |
max_citation_length | 600-1000 characters | A single core data entry includes multiple fields. This length fully displays key traceability information such as origin, price, and financing cost |
citation_source_require_field | Enable verification for "origin", "release date", and "trading institution" | Traceability for thermal coal financing daily reports requires clear data issuing entities and specific origins. This configuration avoids vague citations |
parse_file_chunk_size | 800-1200 characters | Daily reports have a fixed document structure. This chunk size fully retains the field information of a single data group without splitting critical content |
The parameter values provided on this page are standard starting points for configuration. Actual values are affected by material format, data volume, and business rules. Specific issues require individual analysis. It is recommended to test on your own samples before finalizing settings.
Three Common Errors
- Phenomenon: An empty citation prompt appears after enabling
rerank_top_n, with the interface showing no matching search results. Cause:similarity_thresholdis set above 0.9, causing excessive filtering of pre-reranking recall results and preventing valid reranking materials from being available. - Phenomenon: After exporting a workflow JSON file and importing it to a new environment, the cited data source configuration fails to load properly. Cause: Only the workflow configuration was exported, while associated data source connection keys and permission configurations were not exported synchronously, preventing the new environment from recognizing the data source path.
- Phenomenon: Unit confusion appears in citation snippets, such as displaying credit limit units of "ten thousand yuan" as "yuan/ton". Cause: Unit verification for
citation_source_require_fieldis not enabled, and recall operations do not match unit information corresponding to fields.
How to Confirm Proper Configuration
- Upload a standard thermal coal financing daily report document, initiate a search task, and check if returned citation snippets include the three required fields: origin, release date, and trading institution.
- Adjust
similarity_thresholdto 0.7, initiate a batch search, and confirm that the number of recalled snippets falls within the range set byrecall_top_k, with no large volumes of irrelevant general coal industry content included. - After enabling the reranking function, check that the number of returned citations is within the range set by
rerank_top_n, with no redundant entries beyond the specified scope. - Export the workflow and associated data source configurations, import them to a new workspace, and confirm that the data source connection status is normal with no error prompts.
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.