What the data for this category looks like
Thermal coal research report data comes primarily from coal industry research institutions, public trading data from domestic coal ports, and public operational reports from downstream power and steel sectors. There are two update frequency categories:
- Spot price data is updated daily
- Industry supply-demand and policy research reports are released irregularly on workdays
- Monthly and quarterly industry summary reports are updated on fixed schedules
Document structures typically include core price indices (such as the Qinhuangdao Port 5500 kcal thermal coal price), supply-demand balance sheets, transportation cost calculations, policy updates, downstream demand share and other fields. All fields have clear attached units: for example, price is measured in yuan/ton, and calorific value is measured in kcal/kg.
Constraints for Multi-turn Dialogue and Prompt Engineering
The characteristics of thermal coal research reports impose specific constraints on multi-turn dialogue and prompt setup:
- The high-frequency update nature requires multi-turn dialogue to pull real-time latest data, and expired retrieved content must be avoided.
- Clear field units require prompts to strictly bind category and unit information, preventing large models from confusing thermal coal data with different calorific values or ports.
- Scattered, lengthy report content requires limiting the length of retrieved context per round, while tracking parameter context across multi-turn dialogue. For example, if a user first asks about thermal coal prices at a specific port, subsequent questions about month-on-month changes automatically associate the previously referenced port and calorific value parameters.
- Strong correlation across different data dimensions requires multi-turn dialogue to support switching between price, supply-demand, policy and other question dimensions without repeating basic parameter explanations.
Configuration Settings
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
maxContext | 800–1200 characters | The core analysis content of a single thermal coal research report is approximately 1000 characters. This range covers key information while avoiding context overflow |
recallTopK | Top 6 entries | Core data of thermal coal research reports is scattered across price, supply-demand, policy and other sections. Retrieving 6 entries covers most user question dimensions |
similarityThreshold | 0.72–0.78 | Keywords in thermal coal research reports have high recognizability. This threshold filters irrelevant research reports for coking coal, anthracite and other coal categories |
PARSE_FILE_TIMEOUT_SECONDS | 300 seconds | A single thermal coal research report requires parsing multiple sets of price and supply-demand data. This duration covers standard parsing time |
toolCallTimeout | 180 seconds | Reserve sufficient time for interface response and data processing when calling real-time thermal coal price interfaces |
exportConversationMaxSize | 50 MB | Adapt to batch export requirements for team version multi-turn conversations, covering conversation content storage in most scenarios |
The parameter values provided on this page are common starting points for configuration. Actual values are affected by material format, data volume and business rules. Specific issues require specific analysis, and it is recommended to test on your own samples before finalizing.
Three Common Misconfigurations
- Dialogue response timeout, with 504 Gateway Timeout displayed in the interface. Cause: The
PARSE_FILE_TIMEOUT_SECONDSparameter is not adjusted, and parsing long-form research reports exceeds the default threshold, leading to task interruption. - Empty thermal coal price charts generated by tool calls. Cause: The prompt does not enforce binding of specific categories and units, and the large model fails to specify key parameters such as 5500 kcal and Qinhuangdao Port when calling the interface.
- Lost context in multi-turn dialogue, unable to associate calorific value and port information from previous questions. Cause: The
maxContextparameter is set too small, truncating key parameter content from previous dialogue.
How to Verify Proper Configuration
- Initiate a parsing task for a single thermal coal research report, check parsing logs and result completeness to confirm that the
PARSE_FILE_TIMEOUT_SECONDSvalue matches parsing duration. - Initiate a multi-turn dialogue: first ask about the current price of 5500 kcal thermal coal at Qinhuangdao Port, then ask about month-on-month changes, confirm that the dialogue automatically associates previously referenced port and calorific value parameters.
- Call the tool to generate a thermal coal price chart, check that the chart includes clear category, calorific value and unit information, confirm that the prompt configuration covers field requirements.
- Export multi-turn dialogue content, check the format and content completeness of the exported file, confirm that the
exportConversationMaxSizevalue meets usage requirements.
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.