What the data for this category looks like
The data for decoration and fit-out investment research comes mainly from industry construction specification atlases, material supplier quotation sheets, project bidding documents, and local housing and construction regulatory policy documents. The update rhythm varies widely. Material prices and supplier quotations are updated weekly. Construction specifications are updated every six months alongside industry standard revisions. Project documents are updated dynamically alongside project progress. Document structure includes three categories: long-text process descriptions, structured parameter tables, and high-definition node detail drawings. Fields mostly include material brand, model, environmental protection rating, and construction process parameters. Units include ㎡, kg, set, ten thousand yuan, and similar units.
What constraints these characteristics impose on the retrieval and recall link
Decoration and fit-out data includes a large number of high-definition images and structured parameters. This requires the retrieval and recall link to support image-associated retrieval and field-level precise matching. Frequently updated material quotation data requires support for incremental indexing to reduce resource consumption from full indexing. Long-text process descriptions and project investment research needs linked to multiple documents require reasonable control of chunk length to avoid context breaks. At the same time, field format differences across documents are large. Apply parsing rules for multiple types of structured data to avoid precision deviations in recall results.
How to set configurations
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
UPLOAD_FILE_MAX_SIZE | 500 MB | Decoration documents include high-definition construction detail drawings. Single file size is usually larger than documents from general-purpose categories |
PARSE_FILE_TIMEOUT_SECONDS | 1200 seconds | Parsing large construction specification atlas documents takes a long time. Extend the timeout threshold to avoid mid-process interruptions |
chunk_size | 800–1200 characters | Balance context completeness of long-text process descriptions and fragment splitting accuracy of structured parameter tables |
similarity_threshold | 0.72–0.85 | Match content with high precision requirements such as material models and process parameters. Avoid mixing low-correlation results |
recall_top_k | Top 8 entries | Single-project investment research needs to cover multi-dimensional information including materials, processes, and policies. This quantity balances recall breadth and result density |
enable_image_retrieval | Enabled | Decoration documents include a large number of node detail drawings and material sample images. Support image-associated recall and display |
The parameter values provided on this page are common recommended starting points for configuration. Actual values are affected by material forms, data volume, and business rules. Specific issues require specific analysis. Testing on local samples is recommended before finalizing settings.
Three common misconfigurations
- Issue: Knowledge base upload status remains "Indexing" for more than 2 hours. Cause: The
PARSE_FILE_TIMEOUT_SECONDSparameter was not adjusted. Large construction atlas files parse beyond the timeout threshold without triggering retries. - Issue: Images in the knowledge base cannot be displayed in responses. Cause: The
enable_image_retrievalconfiguration was not enabled, or image and main text association metadata was not extracted correctly. - Issue: Variable reference function is unresponsive. Entering content in the
[{datasetId: xxx}]format fails to retrieve the corresponding knowledge base content. Cause: Variable syntax does not wrap key names and parameter values in double quotes, which does not meet platform specifications.
How to confirm configurations are correct
- Upload a test document that includes high-definition construction detail drawings and material parameter tables. Confirm if image association information and structured fields are extracted after parsing completes.
- Submit a retrieval request that includes specific material models and construction process keywords. Confirm if the number of returned recall results and similarity scores fall within the preset configuration range.
- Test the variable reference function. Enter parameter formats that meet platform specifications. Verify that content from the specified knowledge base can be correctly associated.
- Upload a large construction specification document over 300 MB. Confirm if the index status completes updates within a reasonable time frame.
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.