What Data for This Category Looks Like
Data sources for airport financing daily reports include public airport financing announcements from Civil Aviation Regional Administrations, industry financing monitoring data from the Civil Aviation Airport Association of China, and temporary announcements of listed companies from domestic stock exchanges. Updates are released daily for financing transaction data from the previous workday. Each document includes fields for airport ICAO/IATA code, full financing entity name, financing amount, financing method, disclosure date, and fund usage. The unit is uniformly RMB 100 million yuan. Some announcements include summaries of key clauses of financing agreements.
What Constraints Do These Characteristics Impose on Citation Sources and Traceability Links
First, data sources include civil aviation regulatory announcements and exchange announcements. The layout formats of different sources vary widely. The parsing link must support multi-format content extraction to avoid loss of key fields. Second, the daily update rhythm requires timeliness of the recall link. Short timeout thresholds must be used to ensure same-day data is indexed in time. Third, fields include aviation-specific ICAO/IATA codes. The traceability link must retain these identifiers to accurately associate with the corresponding airport entity. Fourth, disclosure documents for individual financing transactions are lengthy. Adjust segmentation and recall parameters to avoid truncating core traceability fields such as financing amount and fund usage.
Configuration Settings
| Configuration Item | Recommended Value | Basis for This Setting |
|---|---|---|
recall count | Top 10 entries | The daily data volume of airport financing daily reports is moderate. Excessive recall will introduce irrelevant content, while too few recalls will cover all financing events of the day. |
similarity threshold | 0.75–0.85 | Core fields of financing daily reports have high discernibility. This interval can filter low-relevance non-financing civil aviation data. |
reranked return count | Top 6 entries | The number of valid daily financing transactions is limited. Retaining the top 6 entries ensures traceability covers all core events. |
segment length | 800–1200 characters | Core disclosure paragraphs of financing announcements retain field association relationships, avoiding truncation of key information such as airport codes and financing amounts. |
PARSE_FILE_TIMEOUT_SECONDS | 120 seconds | PDF parsing of exchange announcements requires adaptation to complex layouts, avoiding timeout that prevents some announcements from being indexed. |
citation template | Fixed format including source, publish_date, airport_code | Disclosure source, publication date, and airport code must be used as core traceability identifiers to facilitate subsequent accurate verification. |
The parameter values provided on this page are conventional recommendations used as a starting point for configuration. Actual values are affected by material form, data volume, and business rules. Specific issues require specific analysis. It is recommended to test on your own samples before finalizing settings.
Three Common Mistakes
- Symptom: The parsing link returns a
408 Request Timeouterror, and some airport financing announcements cannot be indexed. Cause: ThePARSE_FILE_TIMEOUT_SECONDSvalue is not adjusted to match the duration required for exchange announcements. The default threshold is too low, causing parsing to interrupt. - Symptom: The airport ICAO/IATA code field is missing from citation results, making it impossible to associate traceability with a specific airport. Cause: The appropriate
segment lengthis not configured, causing fields containing exclusive codes to be truncated during segmentation. - Symptom: Citation content does not include disclosure date and airport code, making traceability verification impossible, or the custom citation template function cannot be enabled. Cause: A compliant
citation templateis not configured, or the open source versionV4.8.22does not include the custom citation template function. Upgrade toV4.9.0or a later version to resolve this.
How to Confirm Configuration Is Complete
- Upload a single airport financing announcement PDF, and check if the parsing result completely extracts core fields such as airport code, financing amount, and disclosure date.
- Initiate a query containing an airport ICAO code, and check if the citation module of the returned results includes the configured traceability identifier fields.
- Simulate three consecutive related queries, and check if the context is correctly associated, and the citation content does not have chaotic cross-daily report associations.
- View system logs to confirm that no timeout errors occur in the parsing link, and the recall count matches the preset configuration value.
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.