What the Data for This Category Looks Like
Commercial real estate investment research data primarily comes from project operation ledgers, business district passenger flow monitoring systems, official rental price databases, commercial land use planning policy documents, and third-party format research reports. Update rhythm: Rental unit price data is updated monthly, passenger flow monitoring data is updated weekly, annual project reports are updated yearly, and policy documents are updated irregularly per their release schedule. Document structure includes structured fields and unstructured content: Structured fields include project name, business district grade, rental unit price, vacancy rate, and passenger trips. Unstructured content includes tens of thousands of-word project format analysis PDF documents and long-format business district development research reports.
Constraints Imposed by These Characteristics on Knowledge Base Retrieval and Recall
High proportion of structured fields, requiring the retrieval link to support both exact matching and fuzzy matching, to avoid retrieval deviations caused by inconsistent field units or names. Large differences in update frequencies across different data sources, requiring configured batch incremental update tasks to avoid excessive resource usage from full refreshes. Long unstructured research reports, requiring reasonable control over segment length to ensure complete contextual logic for retrieval and recall. Multiple regional and business district dimensions, requiring support for filtering recall results by dimensions such as city and business district type, to improve retrieval accuracy.
Configuration Settings
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
Recall Count | Top 10-15 results | Commercial real estate investment research data includes structured fields and long unstructured documents. Too many recalled results will exceed the context window, while too few will miss key format analysis and rental data |
Similarity Threshold | 0.72-0.85 | Structured rental and vacancy rate fields require high matching accuracy, while unstructured research reports need a certain amount of fuzzy matching space to avoid missing recalls of industry policies and passenger flow analysis content |
Segment Length | 800-1200 characters | A single commercial real estate research report can be tens of thousands of words. Too long a segment will cause contextual redundancy, while too short a segment will destroy the complete logic of format trend and rental analysis |
PARSE_FILE_TIMEOUT_SECONDS | 600 seconds | Parsing complete ledgers and research report PDFs for large commercial real estate projects takes a long time, and the default timeout cannot cover the complete parsing process |
UPLOAD_FILE_MAX_SIZE | 1000 MB | Single complete operation data and monitoring report files for commercial real estate projects are large in size, so upload limits need to be relaxed to support complete file imports |
The parameter values provided on this page are all conventional recommendations used to determine a starting point for configuration. Actual values are affected by material form, data volume and business rules. Specific issues require specific analysis, and it is recommended to test on your own samples before finalizing.
Three Common Pitfalls
- When uploading Markdown format analysis documents for commercial real estate, the interface prompts parsing failure or missing content after parsing. The reason is that the Markdown file contains unclosed tables, code blocks, or uses non-UTF-8 encoding, causing the parsing plugin to fail to correctly extract text content.
- Retrieval results match accurately during local debugging and preview, but return empty results or irrelevant results after deployment to the official business page. The reason is that the vector database synchronization task is not configured in the online environment, or cross-domain access permissions are not set correctly, causing retrieval requests to fail to associate with complete knowledge base vector data.
- Commercial real estate project real-scene images and business district maps displayed in retrieval results fail to load, and the console returns 403 or 404 errors. The reason is that the image links use private storage bucket permissions without configuring public access permissions, or the link validity period has expired.
How to Confirm Correct Configuration
- Upload a standard Markdown document for a commercial real estate project, check whether the parsed text fragments completely retain structured fields such as rental price and vacancy rate, as well as complete paragraphs of format analysis.
- Initiate a retrieval request, enter a query term containing structured fields, verify whether the returned results prioritize matching target fields, and the number of recalled results meets the configuration requirements.
- Wait for the configured incremental update task to trigger, check whether the knowledge base update log shows successful incremental synchronization of the corresponding data source, with no timeout or parsing failure records.
- Insert a publicly accessible commercial real estate image link, verify that the image in the retrieval result loads normally with no error prompts.
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.