What the Data for This Category Looks Like
Minor metals investment research data covers types including spot quotes, industry research reports, futures market data, customs import and export statistics, and more. Data sources include official releases from industry associations, futures exchange market APIs, customs general administration statistics, and third-party professional institution reports. Update rhythms vary significantly: spot prices are updated daily, supply and demand weekly reports are released weekly, quarterly production capacity reports and annual industry yearbooks are updated monthly or quarterly. Document structure includes common fields and category-specific fields. Common fields include publish time and publishing organization. Category-specific fields include grade, purity, smelting process, and more. Units mostly use professional measurement standards such as yuan/ton, gram/ton, metal tonnage, etc.
What Constraints Do These Characteristics Impose on Deployment and Upgrade?
The multi-source nature and varied update rhythms of minor metals data require adapting to access protocols for multiple data source types during deployment, and compatible with interface changes for different data sources during upgrades. Category-specific fields and professional measurement units require configuring custom document parsing rules during deployment, and verifying that parsing plugin logic for extracting specific fields works correctly during upgrades. Long industry reports and large volumes of historical data require adjusting file upload and parsing timeout parameters to avoid data sync interruptions caused by task timeouts. The large number of detailed varieties with large specification differences require optimizing vector recall matching rules, and updating recall threshold configurations during upgrades to prevent recalling irrelevant category information.
Configuration Settings
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
PARSE_FILE_TIMEOUT_SECONDS | 300–600 seconds | Documents such as minor metals industry research reports and customs import and export statistics are usually lengthy, requiring adaptation to the time-consuming needs of long document parsing |
UPLOAD_FILE_MAX_SIZE | 1000 MB | Supports batch upload of large-volume files including quarterly supply and demand reports and annual industry yearbooks |
CHUNK_SIZE | 800–1200 characters | Minor metals data contains a large number of professional terms and specification parameters. Too long segments reduce recall accuracy, while too short segments destroy logical connections |
SIMILARITY_THRESHOLD | 0.75–0.85 | There are many minor metals detailed varieties, requiring filtering of low-match irrelevant data to avoid recalling investment research information of non-target varieties |
RECALL_TOP_N | Top 8–12 entries | Balances recall coverage and response speed, adapting to multi-dimensional investment research query scenarios |
CRAWLER_RETRY_TIMES | 3 times | Some industry data sources have temporary access fluctuations, and the retry mechanism ensures the stability of data synchronization |
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 test on your own samples before finalizing settings.
Three Common Misconfigurations
- An error
cannot fetch internal urlappears after upgrading to version 4.9.0 when creating a knowledge base using a URL. The cause is that version 4.9.0 added internal URL access restrictions, and the crawling permission for non-whitelist domains is not enabled by default. - The file processing plugin cannot be found after deployment. The cause is that the corresponding parsing plugin is not enabled in the application configuration, or the plugin configuration was not migrated synchronously after upgrading the version.
- Professional formulas cannot be parsed normally on the local 4.8.12 version. The cause is that the local version did not load the formula parsing dependency package, or there are adaptation differences in formula parsing rules between versions.
How to Confirm Proper Configuration
- A copy of the minor metals spot quote document is submitted, and the parsing result is checked to confirm whether core fields such as variety, specification, origin, and price are correctly extracted.
- A query containing minor metals professional terminology is initiated, and the matching degree of the recall results is verified to meet the preset threshold, with no irrelevant category data included.
- The scheduled sync task is tested to confirm whether the latest industry data can be pulled at the preset frequency, with no timeout or failure logs generated.
- After upgrading the version, the original knowledge base parsing rules are verified to function normally, with no field loss or format confusion observed.
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.