What Data for This Category Looks Like
Building construction engineering cost yield-related data comes primarily from project BIM cost ledgers, monthly construction progress payment settlement documents, and engineering material pricing indices released by regional housing and urban-rural development authorities. Data update cycles are divided by project milestones: current input and settlement data updates after weekly progress payment settlement for individual projects, while regional industry data updates monthly. Most documents are structured Excel or CSV files, containing fields such as project ID, engineering location, current input, cumulative input, benchmark price for corresponding pricing items, and current settlement price. Field units include yuan per square meter, ten thousand yuan, and natural month. No unified standardized naming convention exists for these fields.
Constraints Imposed on Model Access and Configuration
The multi-source nature of building construction engineering data requires configuration that supports adaptive rules for multiple data source access, to avoid parsing failures caused by differences in document formats across sources. The staggered update cycle of data requires configuration that allows custom trigger frequencies for scheduled synchronization tasks, to meet update needs for weekly individual project data and monthly regional data. The non-standardized field naming of structured documents requires configuration of flexible field mapping rules, to ensure parsed data fields match model input requirements. Differences in units across different pricing items require configuration of unit normalization parameters, to prevent the model from confusing numerical calculations using different units.
Configuration Settings
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
PARSE_FILE_FIELD_MAPPING | Map actual settlement document column names to project_id, location, current_input, total_input, benchmark_price, current_settlement_price | Matches standard field definitions for building construction engineering settlement documents |
DATA_REFRESH_CRON | 0 0 2 * * ? (triggers daily at 2:00) or 0 0 1 * * ? (triggers on the 1st day of each month) | Adapts to the update rhythm of weekly and monthly building construction engineering data |
MAX_CONTEXT_LENGTH | 8000-12000 characters | Adapts to the average parsed length of individual building construction engineering settlement documents |
SIMILARITY_THRESHOLD | 0.75-0.85 | Differentiates pricing differences across engineering locations, improving recall accuracy |
UPLOAD_FILE_MAX_SIZE | 500 MB | Covers the common size of large settlement files for individual projects |
PARSE_FILE_TIMEOUT_SECONDS | 300 seconds | Adapts to the parsing time required for large structured documents |
The parameter values provided on this page are common recommended starting points for configuration. Actual values are affected by material types, data volume, and business rules. Specific issues require case-by-case analysis, and it is recommended to test on internal test samples before finalizing settings.
Three Common Configuration Mistakes
- Symptom: The model returns only thought process, no final yield rate values. Cause: The
model_output_formatparameter is not configured to output both thought process and structured results. - Symptom: Missing or misaligned fields appear after parsing structured files. Cause: The
PARSE_FILE_FIELD_MAPPINGparameter is not configured using the actual column names from building construction engineering settlement documents, and default mapping rules do not match document fields. - Symptom: The interface displays a
413 Request Entity Too Largeerror when uploading settlement files. Cause: TheUPLOAD_FILE_MAX_SIZEparameter is not configured to a value adapted to large building construction engineering files, exceeding the platform's default limit.
How to Verify Configurations Are Correct
- Upload a single building construction engineering settlement document, and verify that the parsed field list matches the configured
PARSE_FILE_FIELD_MAPPING. Adjust the mapping rules if there is a mismatch. - Manually trigger a data synchronization task, and verify that the updated data timestamp matches the trigger rule specified by the configured
DATA_REFRESH_CRON. Adjust the cron expression if there is a mismatch. - Initiate a model call request, and verify that the returned content includes the expected thought process and yield-related results. Adjust the
model_output_formatparameter if the format does not meet requirements. - Upload a test file that exceeds the preset size, and confirm that the platform's returned error message complies with the
UPLOAD_FILE_MAX_SIZElimit. Adjust the parameter value if it does not comply.
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.