What Data for This Category Looks Like
Railway and highway research report data comes from public reports of transportation industry associations, official operational data from railway bureau groups, highway transportation monitoring platforms, and securities firm transportation sector research reports. Update cycles fall into two categories: monthly road network operation monitoring data is updated on a scheduled basis. Quarterly and half-year in-depth industry research reports are released according to their respective research cycles.
Document structures typically include overall road network operation overviews, passenger and cargo volume statistics by route, cost structure analyses, relevant policy explanations, and industry trend forecasts. Fields include route mileage (unit: kilometers), average daily cargo volume (unit: ten thousand tons), toll revenue (unit: ten thousand yuan), policy document numbers, issuing authorities, and release dates, among others.
Constraints Imposed on Deployment and Upgrade by These Characteristics
The multi-source update cycles and specific field formats of railway and highway research reports impose multiple constraints on deployment and upgrade workflows. During deployment, interfaces for multiple data sources must be connected, and preprocessing rules adapted to different formats must be configured to prevent data parsing failures. During upgrade, the scheduling cycle of incremental synchronization tasks must be adjusted to distinguish update frequencies for monthly monitoring data and quarterly research reports. This prevents duplicate data pulls or missed data. Compatibility logic for old field mappings must also be retained. Changes to unified field unit rules can cause parsing errors in historical data, so this compatibility step is necessary. Additionally, the high proportion of long documents requires corresponding adjustments to parameters related to text parsing and recall.
How to Configure Settings
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
PARSE_FILE_TIMEOUT_SECONDS | 900 seconds | Railway and highway research report documents are generally long. Sufficient parsing time must be reserved to avoid task timeouts and interruptions |
Segment Length | 1000–1500 characters | Research reports contain many technical terms and long paragraphs. This range balances semantic completeness and recall accuracy |
Recall Count | Top 8–12 entries | Railway and highway research reports have many technical data dimensions. A sufficient number of recalled segments is needed to cover core information |
Similarity Threshold | 0.72–0.8 | Low-relevance general transportation statements must be filtered out to retain report content that strongly matches target queries |
UPLOAD_FILE_MAX_SIZE | 2000 MB | Single in-depth research report documents may exceed conventional sizes, adapting to long document upload requirements |
SYNC_CRON | 0 2 1 * * | Matches the monthly update rhythm of monthly data. Executing synchronization at 2:00 daily ensures the latest data is imported to the system in a timely manner |
The parameter values provided on this page are common starting points for configuration setup. Actual values are affected by material form, 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 Errors
- Phenomenon: After performing an upgrade operation, the system login page still displays the old version number. Cause: Front-end static resource cache was not cleared, or the core version identification file was not overwritten by the upgrade script.
- Phenomenon: After importing railway and highway research reports, some technical fields (such as route mileage) display as empty. Cause: Mapping rules for industry-specific fields were not configured during deployment, resulting in a mismatch between data source fields and system preset fields.
- Phenomenon: After manually triggering an incremental synchronization task, the latest monthly road network data is not pulled. Cause: The synchronization cycle configuration is incorrect, the update node of monthly data was not matched, or the latest data interface permissions for the corresponding data source were not authorized.
How to Confirm Proper Configuration
- Upload a local railway and highway research report document, and check if the parsed text segments meet the preset segment length requirements.
- Initiate a query targeting road network cargo volume, and verify that the number of recalled results matches the configured recall count.
- Manually trigger a scheduled synchronization task, and check if the latest data from the data source is successfully imported into the system.
- Check the system version identification file, and confirm that the upgraded version number matches the target version.
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.