What the Data for This Category Looks Like
Data related to failed bid item bidding is sourced from government procurement public service platforms, industry bidding portal websites, and internal enterprise archived bidding project documents. Data updates are triggered synchronously when failed bid announcements for individual bidding projects are released, with no fixed batch update cycle. Most documents are structured or semi-structured announcement texts, and some include PDF scans of official announcements. Fields include project unique identifier, failed bid time, failed bid reason category, original bidding technical parameters, bid response deviation items. Amount units are mostly CNY yuan or ten thousand yuan.
Constraints Imposed on Knowledge Base Retrieval and Recall
The characteristics outlined above impose multiple constraints on the knowledge base retrieval and recall process. Multi-source data sources require support for cross-platform and cross-storage knowledge base access. Image attachments included in documents require text content extraction for retrieval, so OCR-related configuration must be enabled. Precise technical parameters and deviation items in fields require higher retrieval matching accuracy than general question-and-answer scenarios, so adjust the similarity threshold and number of recalled entries. No fixed-cycle incremental updates require configuring high-frequency small-batch synchronization tasks to avoid resource consumption caused by full updates. Additionally, the size of individual documents must fit within parsing thresholds to prevent parsing failures.
Recommended Configuration Values
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
PARSE_ENABLE_OCR | Enabled | Failed bid item documents often include image attachments of official announcements, and text content from images must be extracted for accurate retrieval |
RECALL_TOP_K | Top 8-12 entries | Failed bid items require matching historical deviation items and reasons. Too many recalled entries will introduce irrelevant content, while too few may miss valid cases |
SIMILARITY_THRESHOLD | 0.75-0.85 | Technical parameter matching for failed bid items requires high accuracy. A threshold that is too low will introduce irrelevant cases, while a threshold that is too high may miss valid matches |
KNOWLEDGE_BASE_INCREMENTAL_SYNC_INTERVAL | Every 15 minutes | Failed bid announcements are released without a fixed cycle. High-frequency incremental synchronization ensures the timeliness of knowledge base content |
PARSE_FILE_MAX_SIZE | 20 MB | Individual failed bid announcement documents (including attachments) typically do not exceed this size, preventing parsing timeouts |
RECALL_RERANK_TOP_N | Top 3-5 entries | The most relevant failed bid reasons and deviation items must be returned first to simplify subsequent troubleshooting logic |
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 individual analysis. It is recommended to test on your own samples before finalizing values.
Common Misconfigurations
- Symptom: After uploading a failed bid announcement document that includes images, retrieval does not return content from the images or the images themselves. Cause: The
PARSE_ENABLE_OCRconfiguration is not enabled, so text content from images is not extracted for recall. - Symptom: The number of knowledge bases that can be created in a local deployment version is limited to 30. Cause: The
MAX_KNOWLEDGE_BASE_COUNTparameter in the local deployment configuration file is not modified, and the default value is 30. - Symptom: After upgrading to version 4.9.0, an error occurs when creating a failed bid item knowledge base via URL. Background logs prompt
cannot fetch internal url. Cause: This version adds internal URL access interception configuration, and the URL of the target bidding platform is not added to the allowlist.
How to Verify Proper Configuration
- Upload a failed bid announcement document that includes official announcement images, and verify that the parsed result includes text content from the images to confirm OCR parsing configuration is enabled.
- Submit a retrieval request that includes specific bidding technical parameters, and check that the number of returned matching results matches the preset configuration.
- View knowledge base synchronization records to confirm that incremental synchronization tasks run automatically according to the preset cycle, with no missing failed bid announcement source data.
- Test creating a knowledge base source via a public bidding platform URL, and confirm that no internal URL interception errors occur.
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.