What Data for This Category Looks Like
Data for this category originates from four main sources:
- Annual airport operation statistical reports published by Civil Aviation Regional Administrations
- Real-time operation logs from air traffic control systems
- Official facility maintenance announcements released by airports
- Industry compliance review documents
Three update schedules apply:
- Annual statistical data updates per calendar year
- Real-time operation data synchronizes every 5 minutes
- Compliance documents update immediately upon publication
Most documents combine structured tables and long text. Fields include runway number and length, annual takeoff and landing sorties, passenger throughput, cargo volume, safety incident records, and renovation and expansion plans. Units include meters, sorties, person-times, tons, and others. Some documents include cross-year operation comparison data.
What Constraints These Characteristics Impose on Knowledge Base Retrieval and Recall
The mixed structured and unstructured data structure requires the retrieval pipeline to support both precise matching of structured fields and full-text semantic recall. High-frequency updates of real-time operation data require the recall link to support incremental indexing and cache invalidation mechanisms. This prevents returning expired data. Field correlation in long documents requires retaining contextual association of adjacent fields during chunking. This avoids breaking the binding between runway numbers and their corresponding lengths. Differences across multi-source data require adding a source credibility verification step after recall. This ensures compliance documents have higher priority than non-official data.
Configuration Settings
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
PARSE_FILE_CHUNK_SIZE | 800–1200 characters | Airport documents include correlated fields such as runway parameters and throughput. This length preserves the complete context of a single business record and avoids split breaks |
RECALL_TOP_N | Top 8 results | Airport due diligence reports need to cover multiple types of information including operation data, compliance records, and renovation plans. This quantity balances recall coverage and result redundancy |
SIMILARITY_THRESHOLD | 0.75 | Compliance documents require high matching accuracy to avoid retrieving low-relevance non-official data |
UPLOAD_INCREMENTAL_ENABLE | Enabled | Real-time operation data is updated at high frequency. Incremental indexing reduces time overhead of full reconstruction |
STRUCTURED_RECALL_ENABLE | Enabled | Data includes structured fields such as runway numbers and takeoff and landing sorties. Precise matching improves retrieval efficiency |
PARSE_FILE_TIMEOUT_SECONDS | 300 seconds | Single airport annual report documents usually include multiple pages of structured tables. A longer timeout ensures complete parsing |
The parameter values provided on this page are common recommended starting points for configuration. Actual values are influenced by document format, data volume, and business rules. Specific scenarios require targeted analysis. Testing on local samples is recommended prior to finalizing configuration settings.
Three Common Misconfigurations
- Symptom: The knowledge base page displays all document content, but the model prompts that the knowledge base is empty during conversation calls. Cause: Vector database synchronization migration was not performed correctly. Only metadata was migrated, and the vector index was not updated.
- Symptom: Retrieved results after document chunking lose the associated information between runway numbers and their lengths. Cause: Document chunk length was set too small. Splitting broke the contextual binding of structured fields.
- Symptom: Real-time operation data retrieval results show historical data that does not match the current time. Cause: Cache invalidation mechanism was not configured. The recall link used expired cached indexes.
How to Verify Proper Configuration
- Upload a single airport operation annual report, view the parsed chunk list, and confirm that adjacent chunks retain the associated information of structured fields.
- Initiate a retrieval request that includes structured fields, and confirm that precise matching results are returned normally.
- Trigger an incremental upload operation, and verify that the vector index of newly added data has been updated.
- Adjust the similarity threshold, and observe that the relevance change of recall results aligns with the configuration logic.
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.