Citation Sources and Traceability for Coal Chemical

What Data for This Category Looks Like

Coal chemical financing daily data primarily comes from the industry monitoring database of the China Coal Industry Association, project filing announcements from local development and reform commissions, financing announcements of listed coal chemical enterprises, and credit disclosure information from state-owned banks. Updates run daily, covering new financing dynamics from the previous day. Each document includes seven core fields: project name, financing subject, financing amount, financing method, fund usage, release date, and data source institution. Financing amount is measured in ten thousand RMB. Release dates use the YYYY-MM-DD format. Some source documents include administrative region information for the project location.

What Constraints Do These Characteristics Impose on the "Citation Sources and Traceability" Link

Multi-source, heterogeneous data sources create differences in field formats across documents. For example, some bank credit disclosures include currency labels for financing amounts, while corporate announcements may omit units. This requires the traceability process to unify field mapping rules to avoid unit confusion during citations. The daily incremental update rhythm requires traceability to retain the original data’s release time, so users can verify data timeliness. Coal chemical financing involves many professional terms, such as coal-to-olefins and coal-to-natural gas. Failing to retain complete original data fields during traceability may prevent users from accurately identifying project financing details. Additionally, individual data entries have moderate text lengths, and some documents include financing details in table form. Too many recalled entries will cause context overflow, so strict control of the number and length of recalled content is needed to avoid disrupting the coherence of model-generated output. Furthermore, different sources have varying levels of authority. Traceability processes must mark source types to help users assess data credibility.

Configuration Settings

Configuration Item	Recommended Value	Rationale
`Recall Count`	`Top 10-15`	The text length of a single entry in coal chemical financing daily reports is approximately 300-500 characters. A recall volume of 10-15 ensures complete context splicing while avoiding exceeding the model's context limit
`Similarity Threshold`	`0.55-0.7`	Coal chemical financing terms are highly professional. A threshold that is too low will introduce irrelevant data from other coal sub-categories, while a threshold that is too high will fail to recall accurate project information
`maxContext`	`4000-6000 characters`	Combining the length of single data entries and the splicing requirements of multi-source citations, this range ensures complete citation content and avoids triggering model context overflow errors
`Citation Source Display Fields`	`["Project Name", "Financing Amount", "Release Date", "Data Source Institution"]`	The core traceability information for coal chemical financing daily reports is the project subject, amount, release time, and authoritative source. This configuration meets the traceability needs of engineers
`PARSE_FILE_TIMEOUT_SECONDS`	`120 seconds`	Some original documents include financing details in table format, which take longer to parse. This duration prevents data loss caused by parsing timeouts

The parameter values provided on this page are common recommended starting points for configuration. Actual values are affected by material form, data volume, and business rules. Specific issues require individual analysis. It is recommended to test on your own samples before finalizing settings.

Three Common Configuration Errors

Issue: The citation source field returned by knowledge base search is empty, and original data cannot be traced. Root cause: Required parameters for Citation Source Display Fields are not configured, or source fields from original data are not extracted during parsing, leading to unindexed metadata.
Issue: Corpus retrieved via API calls does not include source information, making traceability impossible. Root cause: The metadata return switch is not enabled in the API request, or the original corpus is not bound to the knowledge base’s index metadata, resulting in only plain text content in call results.
Issue: The knowledge base citation upper limit cannot be adjusted, and the number of returned results stays fixed. Root cause: Confusing the maxContext parameter with Recall Count, adjusting only the context length parameter without modifying the Recall Count value in the configuration interface, so the number of recalled entries does not change.

How to Verify Configuration is Complete

Navigate to the FastGPT knowledge base configuration page, check the Citation Source Display Fields settings. Confirm that the core fields required for coal chemical financing daily reports are selected, and verify that each field name matches the field names in the original data.
A test query is initiated, with keywords related to coal chemical financing entered. The citation module of the returned results is checked to confirm that each citation entry includes preset source information, with no missing fields.
The Recall Count value is adjusted, and the number of returned results across different values is compared. Confirm that the configuration takes effect and the result count matches the expected range.
The knowledge base parsing logs are reviewed. Confirm that all imported coal chemical financing daily reports have been successfully parsed, with no 408 Request Timeout errors or parsing failure records.

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.