What Data for This Category Looks Like
Failed bid item bidding data is primarily sourced from public bidding announcements and failed bid notices on government procurement websites and public resource trading centers. Data updates occur in real time alongside the review progress of corresponding bidding projects. Each document includes fields such as full project name, reason for failed bid, list of original bidders, bid quotation, review rules, and file number of the failed bid basis. Quotation fields use ten thousand yuan as the unit. Time fields follow the YYYY-MM-DD format. Individual document lengths vary significantly. It is recommended to perform calculations or tests using local samples before finalizing settings.
Constraints Imposed on Citation Sources and Traceability by These Characteristics
Since data sources are scattered across multiple public platforms, and each document contains multi-dimensional review details, the citation traceability process requires precise matching of core fields related to failed bids to avoid retrieving irrelevant bidding announcements. The real-time update feature of the data requires synchronization frequency to match the announcement release rhythm, otherwise traceability content will lag behind the latest failed bid information. Additionally, review bases for failed bids are often presented in paragraph form. If segments are too long or too short, key logic may be lost during citation, and the full basis for failed bid determination cannot be displayed. Different platforms also have inconsistent formats for failed bid notices, which require unified structured processing to enable correct retrieval and traceability.
How to Configure Settings
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
maxContext | 30000–50000 characters | Failed bid item documents contain complete review bases, requiring sufficient context space to accommodate multiple relevant segments |
recallTopK | Top 10–15 entries | A single failed bid project may be associated with multiple bidders and review points, requiring sufficient recalled entries to cover all bases |
similarityThreshold | 0.75–0.85 | Failed bid reason statements are precise, requiring a high matching threshold to filter irrelevant bidding content and only recall strongly relevant failed bid notices |
rerankTopN | Top 5–8 entries | Retain the most core failed bid basis documents, avoiding excessive redundant content that consumes context quota |
chunkSize | 1200–1800 characters | Review basis paragraphs for failed bid items are relatively long, this segment length avoids truncating key determination logic |
syncInterval | Every 15–30 minutes | Match the real-time update rhythm of failed bid announcements to ensure traceability content always includes the latest notice information |
The parameter values provided on this page are common starting points for configuration. Actual values are affected by material form, data volume, and business rules. Specific issues require individual analysis. It is recommended to test using local samples before finalizing settings.
Three Common Misconfigurations
- Phenomenon: When
maxContextis set to 3000, the large language model returns no output or prompts insufficient context. Reason: Individual failed bid item segments are relatively long, the 3000 character limit cannot accommodate complete review bases, resulting in failure to pass context to the large language model. - Phenomenon: When passing HTTP response data as a citation source, retrieval results are empty. Reason: The response data was not converted to the JSON structured format supported by FastGPT, and the required fields
title,content, andsourceUrlare missing. - Phenomenon: The citation source module displays normally, but generated answers do not associate with knowledge base content. Reason:
similarityThresholdis set too high, causing matched failed bid item documents to not be included in the context, orchunkSizeis too small, truncating core content of failed bid bases.
How to Confirm Correct Configuration
- Enter the knowledge base management page, check synchronization logs to confirm there are new failed bid item document synchronization records within the last hour.
- Initiate a test query containing failed bid item keywords, check if the retrieval result list includes document fragments from this category.
- View the citation source module below the large language model's answer, confirm each citation carries identification information from the original document.
- Adjust segment length configuration, verify the integrity of individual citation content with no key information truncated.
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.