What the Data for This Category Looks Like
The data for infrastructure construction intelligent due diligence reports comes primarily from public filing systems of housing and urban-rural development departments, internal documents of project parties, reports from third-party cost consulting institutions, and construction records submitted by supervision units.
Data update frequency varies by project phase. The first update is completed after project approval. During the construction phase, progress and funding data are updated every 15 to 30 days. The final version is updated after completion and settlement. Only a small number of maintenance records are added during the operation and maintenance phase.
Most documents are multi-page PDFs or structured Excel spreadsheets. They include project basic information sheets, budget cost detail sheets, construction progress ledger sheets, material procurement ledger sheets, and acceptance and settlement sheets.
Core fields include project approval document number, total investment amount (unit: RMB yuan), contract duration (unit: calendar days), main material unit price (unit: yuan/ton or yuan/cubic meter), and fund allocation amount (unit: RMB yuan).
Constraints on Tool Calling and Plugins
Dispersed data sources and inconsistent formats require tool calling to adapt to multi-format parsing plugins for PDF, Excel and other formats, while also configuring multi-source data integration rules.
Variable data update frequency based on project phases means tool calling triggers must match project milestones. Fixed periodic triggers cannot adapt to phase differences.
Long document lengths and large numbers of detailed tables require tool calling to support long-text segment parsing, to avoid truncated field extraction.
Complex industry-specific field and unit rules require tool calling to be configured with dedicated field mapping and unit verification plugins, to prevent errors where extracted values do not match their units.
Recommended Configuration Values
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
PARSE_FILE_MAX_SIZE | 200 MB | Infrastructure construction due diligence reports often include large numbers of drawing attachments and detail tables. 200 MB covers the file size of most single-project reports. |
maxContext | 8000–12000 characters | Extracting core fields from a single infrastructure construction due diligence report requires covering multiple modules including budget, progress, and acceptance. This range can fully carry critical context. |
TOOL_CALL_TIMEOUT | 300 seconds | Structured data parsing and multi-data source verification require long processing times. 300 seconds prevents timeout interruptions caused by large files or complex parsing. |
PARSE_SEGMENT_LENGTH | 1500 characters | Detail tables in infrastructure construction reports are mostly continuous long text. A segment length matching this value reduces truncated errors in field extraction. |
FIELD_EXTRACTION_THRESHOLD | 0.75 | Most infrastructure construction fields are structured numerical values. A threshold of 0.75 balances extraction accuracy and recall. |
SHOW_TOOL_LOG | Disabled | Only the final extracted due diligence fields need to be returned. Disabling this configuration prevents intermediate parsing logs from interfering with final output. |
The parameter values provided on this page are common recommended starting points for configuration. 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
- Symptom: Tool calling returns empty fields, and the log shows the
FIELD_PARSE_FAILEDerror code. Cause: Dedicated field mapping rules for infrastructure construction are not configured. General field matching logic is directly applied to industry-specific fields such as cost details and construction milestones, resulting in failure to recognize corresponding field formats. - Symptom: Tool calling times out, and the interface displays the
REQUEST_TIMEOUTstatus code. Cause: TheTOOL_CALL_TIMEOUTconfiguration item is not adjusted. The short timeout setting for general scenarios is used, without accounting for the long processing time required for parsing infrastructure construction reports. - Symptom: After tool calling completes, full tool calling intermediate logs and original parsed text are displayed. Cause: The
SHOW_TOOL_LOGconfiguration item is not set to disabled, resulting in the output of intermediate parsing processes.
How to Verify Successful Configuration
- Upload a local infrastructure construction due diligence report PDF, trigger tool calling, and verify that the extracted fields include core information such as project approval document number and total investment amount.
- Check the tool calling log to confirm that
PARSE_FILE_MAX_SIZEdoes not trigger a file over-limit error, and that parsing time is within the range configured byTOOL_CALL_TIMEOUT. - Compare multiple due diligence reports from different sources to confirm that multi-source data synchronization configuration is effective, and that extracted fields have no unit or format errors.
- Disable the tool logging switch, trigger a call, and confirm that the final output only includes extracted due diligence fields, with no intermediate parsing text.
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.