What the Data for This Category Looks Like
Financial report data for the air pollution control category comes primarily from listed companies’ annual or quarterly special environmental disclosure documents, regional air monitoring bulletins published by ecological environment departments, and industry research documents from third-party environmental consulting institutions. Data update cycles fall into two categories: quarterly, aligned with corporate financial report disclosures, and monthly, aligned with regional monitoring data updates. Document structures include fields such as governance facility investment details, pollutant emission reduction statistics, compliance test report attachments, and policy compliance clauses. Pollutant emission reduction values use tons as the unit. Governance equipment depreciation periods use years as the unit. Some attachments are PDF documents with embedded charts.
Constraints Imposed on Knowledge Base Retrieval and Recall
Scattered data sources require the knowledge base to support unified indexing and tag filtering for multi-source data, to prevent cross-industry data from being mixed in. Differences in update cycles require configuring staged incremental update rules, to align synchronization timing between monthly monitoring data and quarterly financial report data. Long PDF attachments in documents require the parsing process to support long text segmentation, to avoid truncation of key information. The specificity of professional fields and units requires the retrieval process to enable professional word vector matching. This ensures accurate semantic recognition for terms such as "ultra-low emission transformation" and "PM2.5 emission reduction volume", while avoiding invalid recall caused by unit confusion.
How to Configure Parameters
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
PARSE_FILE_TIMEOUT_SECONDS | 300 seconds | Air pollution control financial reports often include multi-page monitoring report PDFs, which require longer parsing time. The default timeout duration is insufficient for complete parsing. |
Segment Length | 800–1200 characters | Paragraphs covering governance investment details and emission reduction data in financial reports are lengthy. Excessively long segments lose contextual association, while excessively short segments disrupt the integrity of professional terms. |
Recall Count | Top 6–8 results | Air pollution control financial reports have numerous compliance clauses and emission reduction data entries. Too many results exceed the context window limit, while too few miss critical business information. |
Similarity Threshold | 0.72–0.78 | Semantic matching for professional terms such as "ultra-low emission transformation" and "nitrogen oxide emission reduction" requires a higher threshold, to avoid recalling irrelevant financial report entries. |
UPLOAD_FILE_MAX_SIZE | 500 MB | Single annual air pollution control financial report attachments often include multiple monitoring reports, with a large total size. The default limit causes upload failures. |
Incremental Update Trigger Frequency | Daily | Monthly regional monitoring data updates occur frequently. Daily synchronization ensures the timeliness of knowledge base data. |
The parameter values provided on this page are common recommended starting points for configuration. Actual values vary based on material format, data volume, and business rules. Specific issues require case-by-case analysis. It is recommended to test on your own samples before finalizing settings.
Three Common Configuration Mistakes
- Symptom: After upgrading to FastGPT 4.8.12, calling the air pollution control financial report knowledge base for question answering returns
error, or the initial script execution reports a 404 error. Cause: The knowledge base initialization script adapted to the new version has not been updated, or the image tag does not match the configuration path for the corresponding version. - Symptom: Retrieval results include a large number of non-air pollution control financial report entries, with insufficient professional term matching accuracy. Cause: The
Similarity Thresholdis set too low, and matching weights have not been adjusted for industry-specific professional vocabulary. - Symptom: Single air pollution control financial report attachment upload fails, with a prompt that the file size exceeds the limit. Cause: The
UPLOAD_FILE_MAX_SIZEparameter has not been adjusted to a reasonable range for industry financial report attachments, or multi-file batch upload configuration has not been enabled.
How to Verify Configurations Are Correct
- Upload a single-quarter air pollution control corporate financial report PDF. Confirm that the segmented text generated after parsing includes complete emission reduction volume and governance investment fields, with no garbled characters or truncation.
- Initiate a retrieval test by entering "2024 PM2.5 emission reduction volume". Confirm that the returned recall entries only include air pollution control-related financial report content, and the quantity matches the configured recall count.
- View the knowledge base update log. Confirm that monthly emission monitoring data is automatically synchronized according to the configured
Incremental Update Trigger Frequency. - Execute the knowledge base initialization script. Confirm that the returned status code is 200, with no 404 or timeout errors.
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.