What the data for this category looks like
Data sources for real estate registration service inquiries include the real estate registration information system, cadastral survey database, housing transaction online signing system, tax system, and electronic certificate repository. Data is updated daily. It covers multiple types of documents such as registration application forms, ownership certificates, surveying and mapping results, tax payment vouchers, real estate ownership certificates, and property registers. Data fields include ownership subject information, real estate location, right type, right restriction status, and more. Some documents are structured forms, while others are unstructured scanned documents and electronic certificates.
What constraints do these characteristics impose on the knowledge base retrieval and recall link
Daily updated data requires the retrieval pipeline to support incremental synchronization, to avoid resource consumption from full re-scanning. Multiple document types and mixed field structures require retrieval to adapt to both structured field matching and unstructured text semantic understanding, to avoid missing key information with a single matching mode. High confidence requirements for ownership-related data mean retrieval must strictly filter irrelevant content, to prevent incorrect information from disrupting inquiry responses. Data involves real estate right confirmation, so the accuracy of recalled content is directly linked to subsequent registration verification steps. Core fields must be given priority in retrieval.
Configuration Settings
Reference only; verify against the target FastGPT release and deployment documentation.
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
similarity | 0.75–0.85 | Real estate ownership data requires high matching accuracy to avoid irrelevant content interfering with inquiry responses |
limit | Top 5 entries | A single inquiry may need to cover multiple types of information such as registration applications, ownership certificates, and surveying and mapping data. Five entries balance context length and recall comprehensiveness |
usingReRank | Enabled | Real estate data contains a large number of structured fields and unstructured documents. Reranking improves the sorting priority of highly relevant business content |
datasetSearchUsingExtensionQuery | Enabled | Inquiries often use colloquial expressions. Query optimization converts user questions into retrieval terms that better match business terminology |
collectionIds | Bound to exclusive real estate registration dataset | Exclusive document sets such as registration applications and ownership certificates must be included in the retrieval scope to avoid interference from cross-category data |
Three Common Misconfigurations
- Phenomenon: A rejection response is returned directly when a user’s question does not match exact content in the knowledge base. Cause:
datasetSearchUsingExtensionQueryis not enabled. Strict matching alone cannot handle generalized inquiry requests. - Phenomenon: The number of retrieval results does not match the configured
limit, and a large amount of non-real estate registration business data is mixed in. Cause:collectionIdsis not configured correctly, and the retrieval scope covers irrelevant business datasets. - Phenomenon: Retrieval results are sorted incorrectly, with secondary content such as surveying and mapping data and tax payment vouchers appearing before core content such as ownership certificates and property registers. Cause:
usingReRankis not enabled. Basic similarity sorting alone cannot distinguish business importance.
How to Verify Correct Configuration
- View the dataset binding details, confirm that only the exclusive real estate registration document set is included, and check whether the
collectionIdsconfiguration matches business requirements. - Submit a test inquiry to verify whether the
similaritythreshold meets business matching accuracy requirements. Adjust the threshold until no irrelevant content is mixed in and core business fields can be recalled normally. - Check the sorting of retrieval results, confirm that core business content such as ownership certificates and property registers appears at the top of the retrieval results, and verify that the
usingReRankfunction is active. - Test colloquial inquiries such as "What materials do I need to prepare for second-hand house transfer procedures", confirm that a rejection response is not returned directly, and that the retrieval results cover the corresponding business documents.
The values provided here are common starting points and should be measured against the reader'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.