What the Data for This Category Looks Like
Data sources for building construction engineering intelligent due diligence reports include project approval documents, construction drawing design documents, construction logs, supervision weekly reports, cost settlement statements, completion acceptance record forms, and similar materials. Update cycles are triggered by project milestones. The first update is completed during the project approval phase. Progress and cost data are synchronized quarterly during the construction phase. No further updates are made after archiving upon completion.
Document structures typically consist of multiple chapters, including project overviews, lists of participating construction unit qualifications, construction progress ledgers, detailed cost breakdowns, quality acceptance records, compliance verification items, and similar sections. Fields include building area (unit: square meters), project cost (unit: ten thousand yuan), start and completion dates (YYYY-MM-DD format), qualification levels of participating construction units, and similar items. Some fields are enumeration types, while others are numeric types.
Constraints on Knowledge Base Retrieval and Recall
Scattered data sources that include both structured and unstructured text require the retrieval engine to support mixed-modal matching, balancing keyword and structured field retrieval.
Non-real-time update cycles triggered by project milestones require configuring incremental update logic for the knowledge base, to avoid resource waste from full synchronization.
Large individual document sizes, with some split completion report segments reaching several thousand characters, require a pre-retrieval document splitting strategy adapted to long text segments, to avoid truncation of key information.
Clear numeric and enumeration type fields require retrieval to support numeric range matching and precise enumeration matching, to avoid irrelevant data from vague recall.
Configuration Settings
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
UPLOAD_FILE_MAX_SIZE | 2000 MB | Adapts to the total text size of split individual building construction engineering completion reports, preventing upload interception |
maxContext | 8000–12000 characters | Adapts to the single segment text length after splitting building construction engineering documents, retaining complete information for core fields such as cost and acceptance |
Recall Count | Top 6–8 results | Covers multiple verification dimensions including cost, progress, qualifications, and compliance, avoiding overly single recall fragments |
Similarity Threshold | 0.72–0.80 | Balances matching accuracy and recall coverage, adapting to the precise verification requirements of building construction engineering scenarios |
Reranked Return Count | Top 3–5 results | Focuses on relevant fragments of core verification items, reducing interference from redundant information on due diligence analysis |
PARSE_FILE_TIMEOUT_SECONDS | 1200 seconds | Reserves sufficient time for long document parsing, preventing missing knowledge base segments due to parsing interruptions |
The parameter values provided on this page are common starting points for configuration. Actual values are affected by material form, data volume, and business rules. Specific issues require specific analysis. It is recommended to test against your own samples before finalizing settings.
Three Common Misconfigurations
- Phenomenon: Returned answers do not match building construction engineering data in the knowledge base, and knowledge base reference fields are empty or point to unrelated documents. Cause: The
similarity thresholdis not configured or set incorrectly, and structured field precise matching is not enabled, introducing irrelevant knowledge base fragments from non-building construction engineering sources. - Phenomenon: Knowledge base parsing task fails, with status code 413 displayed in the interface. Cause: The size of the uploaded individual building construction engineering document exceeds the configured
UPLOAD_FILE_MAX_SIZEvalue, causing the upload request to be intercepted. - Phenomenon: Retrieval response time exceeds the preset threshold, with loading timeout displayed in the interface. Cause: A reasonable
PARSE_FILE_TIMEOUT_SECONDSvalue is not set, long document parsing is not completed before retrieval is triggered, or therecall countis set too high, leading to an overly large retrieval scope.
How to Verify Successful Configuration
- Upload a typical building construction engineering completion report, confirm that the parsing task status is successful, with no over-limit or timeout errors, and verify that the parsed text split retains core field information.
- Initiate a retrieval for the cost details of a specific building construction project, confirm that the recall results include fragments of the corresponding fields, and that the referenced knowledge base documents are relevant files for that project.
- Adjust the
similarity thresholdand initiate multiple retrievals, compare the relevance of recall results, and confirm that the value meets the matching accuracy requirements for the current scenario. - View the knowledge base update log, confirm that incremental updates are only triggered at preset project milestones, and that full synchronization of all documents is not performed.
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.