What the Data for This Category Looks Like
Commercial property research report data comes from publicly disclosed reports issued by commercial real estate industry associations, professional consulting institutions, and self-operated property operators. Update cycles are primarily quarterly and semi-annual. Dynamic monitoring reports for some key business districts have higher update frequencies. Most documents combine structured reports and textual analysis. Core fields include project location, leasable area, rental unit price, leasing status, business format proportion, and operating cost items. Units include square meters, yuan per square meter per day, ten thousand yuan, and others.
Constraints Imposed on Document Parsing and Chunking
The multi-source heterogeneous document characteristics of commercial property research reports create multiple constraints for the parsing and chunking process. Document formats vary significantly across sources, including editable structured PDF reports and scanned mixed text and image reports. Support two parsing modes. Document length varies widely, from single-project briefings of a few pages to regional business format analysis reports spanning dozens of pages. Use chunking strategies that balance short document integrity and reasonable information splitting for long documents. The diversity of structured fields and units requires accurate matching of fields to their corresponding units during parsing. This prevents loss of field association information after chunking.
How to Set Configurations
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
PARSE_FILE_TIMEOUT_SECONDS | 120 seconds | Commercial property research reports are mostly mixed text and image or long documents; 120 seconds covers the parsing time requirements for most long documents |
maxChunkSize | 800–1200 characters | Research reports include structured fields and analytical text; this length preserves complete association information for individual business format or rental data |
UPLOAD_FILE_MAX_SIZE | 500 MB | Some regional-level research reports include large numbers of chart attachments; 500 MB covers the size limit for most compliant documents |
CHUNK_OVERLAP_RATE | 10–15% | Structured fields may span chunks; this overlap rate ensures field association information is not split apart |
CUSTOM_PARSE_SERVICE_ENABLED | Enabled | Structured report parsing requirements for commercial property research reports; custom services support extraction for specific format reports |
RECALL_CHUNK_COUNT | Top 8 entries | Core information of a single research report is concentrated in a small number of chunks; 8 entries covers complete core content while avoiding redundancy |
The parameter values provided on this page are common starting points for configuration setup. Actual values are affected by material format, data volume, and business rules. Specific issues require individual analysis. It is recommended to test on your own samples before finalizing settings.
Three Common Misconfigurations
- Issue: After uploading a commercial property research report, a
413 Request Entity Too Largeerror is returned, with a 413 status code. Cause: TheUPLOAD_FILE_MAX_SIZEconfiguration item was not adjusted, and the default limit is smaller than the actual size of the uploaded document. - Issue: A "parsing timed out" prompt appears during parsing, and the interface shows parsing failed. Cause:
PARSE_FILE_TIMEOUT_SECONDSwas not adjusted to a value suitable for long documents, and the default timeout duration is insufficient. - Issue: Rental unit prices and corresponding project locations are split into different chunks in search results, resulting in lost field associations. Cause:
maxChunkSizewas set too small, orCHUNK_OVERLAP_RATEwas not configured, causing structured fields to be forcibly split apart.
How to Confirm Proper Configuration
- Upload a typical commercial property research report, review the parsed text content, and confirm that core structured fields are fully extracted.
- Test uploading multiple documents of different lengths, and confirm that no timeout errors occur during parsing.
- Initiate a search request, and check whether the recalled chunks retain the association information between fields and their corresponding values.
- Review the custom parsing service call logs, and confirm that request parameters and response formats meet expectations.
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.