What the data for this category looks like
Data for minor metals due diligence reports comes from the China Nonferrous Metals Industry Association Minor Metals Branch Professional Committee, public quotes from domestic spot trading platforms, General Administration of Customs import and export clearance data, and monthly operating announcements from leading mining and smelting enterprises. Update rhythms vary significantly: spot quotes are updated daily, inventory and import and export data are updated weekly, industry supply and demand analysis reports are updated monthly, and enterprise operating data are updated quarterly.
A single due diligence document includes product classification, core production area distribution, latest transaction prices, periodic inventory levels, upstream and downstream supply and demand matching, and policy impact summary. Fields covered include product name, production area, transaction benchmark price, total inventory, import and export volume, and production capacity scale. Corresponding units are none, none, yuan per kilogram, tons, tons, and ten thousand tons per year respectively.
What constraints do these characteristics impose on deployment and upgrade
The differences in multi-source data update rhythms, field units, and document length fluctuations for the minor metals category create clear constraints for deployment and upgrade workflows. Multi-source data sync intervals must be configured separately by data source type, to avoid excessive resource consumption from high-frequency syncs or data lag from low-frequency syncs. Fields and units vary slightly across different minor metal categories, so dynamic field mapping rules must be preset during deployment to ensure unified parsing of cross-category data. Some categories have large fluctuations in due diligence report document length, so document parsing segmentation thresholds must be adjusted during upgrades to prevent key content from being truncated. Some data sources require authentication, so a unified management process for authentication key rotation must be implemented during upgrades to avoid data pull interruptions caused by authentication failures.
How to set configurations
| Configuration Item | Suggested Setting | Rationale |
|---|---|---|
PARSE_FILE_TIMEOUT_SECONDS | 600 seconds | Some sections of minor metals due diligence reports contain extensive segmented data, requiring sufficient time for complete parsing |
UPLOAD_FILE_MAX_SIZE | 1000 MB | Some minor metals industry reports include multiple attached supplementary tables, resulting in overall file sizes exceeding the default general threshold |
maxContext | 800–1200 characters | Minor metals data has many fields and scattered units, requiring control of context length to ensure vector recall accuracy |
Recall Count | Top 8 entries | Minor metals categories have many subdivisions, requiring sufficient recall to cover relevant data across different dimensions |
Similarity Threshold | 0.72–0.78 | Minor metals data is highly specialized, requiring a higher threshold to filter irrelevant general content |
DATA_SYNC_INTERVAL | Configured per data source type: spot data 1 hour, inventory data 12 hours, industry reports 24 hours | Significant differences exist in update frequencies across different data sources, requiring matching sync intervals to ensure data timeliness |
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 case-by-case analysis, and it is recommended to conduct tests on your own samples before finalizing settings.
Three common errors
- Symptom: After deployment, building a knowledge base gets stuck in the "Index Building in Progress" state with no progress, and
ETIMEDOUTerrors appear in logs. Cause: TheUPLOAD_FILE_MAX_SIZEparameter was not adjusted for the large-volume supplementary tables in minor metals due diligence reports, resulting in index building timeout after file upload. - Symptom: After switching the data source configuration for due diligence reports, validation errors for required global variables from the original configuration are still triggered. Cause: The global variable cache of the old application was not cleared, and the application configuration cache was not reset during deployment and upgrade.
- Symptom: Parsed due diligence reports have missing fields or mixed-up units. Cause: Dynamic field mapping rules were not enabled, and a general parsing template was directly used to match minor metal-specific fields and units.
How to confirm proper configuration
- Perform an upload and parsing test for a single minor metals due diligence report, check whether there are timeout or field parsing failure prompts in the parsing logs, and verify whether the parsed fields match those in the original document.
- Trigger a full data source sync, check the execution logs of the sync task, confirm that the sync intervals for different data sources match the preset configuration, and that there are no authentication failures or abnormal data pull issues.
- Test the vector recall function, enter a query related to minor metals, verify that the number of recall results and similarity threshold match the preset rules, with no irrelevant content included.
- Switch to parsing due diligence reports for different minor metal categories, confirm that the dynamic field mapping rules take effect, and that field unit conversions are correct.
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.