What this category of data looks like
Data for this category primarily comes from real estate registration information systems, cadastral survey databases, housing transaction online signing systems, tax systems, and electronic certificate repositories. Update frequency is daily. Documents processed daily include registration application forms, ownership certificates, surveying and mapping results, tax payment vouchers, real property right certificates, and real estate registers. Data fields cover real estate location, right type, right holder information, ownership status, and more. Some documents contain mixed structured fields and unstructured text content. Data volume changes dynamically with daily new registration business.
Constraints on Knowledge Base Retrieval and Recall
Data from multiple systems requires retrieval pipelines to support cross-data source associated recall. This prevents fragmented information segments from reducing ownership verification efficiency. The daily update feature requires the knowledge base to support incremental synchronization mechanisms. This ensures retrieval results always match the latest registration status and business data. Mixed structured and unstructured document formats require retrieval to adapt to both text semantic matching and structured field precise matching. This improves the accuracy of verifying ownership sources and comparing real estate surveying and mapping data. High-risk error consequences require recall results to cover core business documents. This reduces registration errors and property disputes caused by missed detection or incorrect recall. The most time-consuming verification link requires retrieval to prioritize returning highly relevant results related to ownership and surveying and mapping. This shortens business processing duration.
Configuration Settings
Reference only; verify against the target FastGPT release and deployment documentation.
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
similarity | 0.75–0.85 | Matches the semantic matching accuracy of core documents such as ownership certificates and surveying and mapping results, balances recall coverage and precision |
limit | Top 10 entries | Covers multiple types of documents required for verifying ownership sources and comparing surveying and mapping data, avoids insufficient information from a single result |
searchMode | hybrid | Combines keyword matching and semantic retrieval, adapts to mixed document scenarios with structured fields and unstructured text |
usingReRank | Enabled | Performs secondary ranking on recall results, prioritizes returning highly relevant documents related to real estate right status and surveying and mapping data |
datasetSearchUsingExtensionQuery | Enabled | Generates extended queries based on user questions, covers associated business documents such as registration application forms and tax payment vouchers |
collectionIds | Specify the ID set of the real estate registration exclusive knowledge base | Limits the retrieval scope to the exclusive dataset within the registration center, avoids interference from irrelevant data |
Three Common Misconfigurations
- The chat interface returns the message "No permission to operate this conversation record" with a citation field appended at the end of the response. The cause is that the permission filtering rule for knowledge base citations was not configured correctly, resulting in citation content being rendered without permission verification.
- Retrieval response takes too long. The cause is that the
limitparameter was not set appropriately or incremental indexing was not enabled, causing retrieval of full business data that exceeds the system processing limit. - Question-and-answer testing fails to recognize image content in the knowledge base, even after uploading a Word document with image links. The cause is that the image OCR function during document parsing was not enabled, or the semantic embedding process for image content was not configured, resulting in image information not being included in the retrieval library.
How to Confirm Correct Configuration
- Initiate a test question involving ownership status verification, verify whether recall results include core business documents such as ownership certificates and surveying and mapping results.
- Review retrieval logs to confirm that response times meet business requirements and no timeout errors occur.
- Test a query about a document containing image links, confirm that the system returns answers relevant to the image content.
- Validate that the citation field at the end of responses can adjust its display status as needed, confirm that permission error messages no longer appear.
The values provided are common starting points and should be evaluated against the operator’s own samples.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-28.