What This Type of Data Looks Like
Building construction financial report data primarily originates from project approval documents, monthly progress ledgers, completion settlement reports, and annual audit reports. Updates align with project milestones and financial report cycles, covering the full project lifecycle. Document formats include PDF audit reports, Excel cost detail tables, Word progress descriptions, and some PDFs converted from scanned documents. Fields include building area (square meters), individual project cost (ten thousand yuan), material purchase volume (tons), construction period (calendar days), and others. Field formatting varies significantly across different documents, with some tables containing merged cells and cross-row data.
Constraints Imposed on Document Parsing and Chunking
The multi-source, heterogeneous document characteristics of building construction financial reports impose multiple constraints on the parsing and chunking workflow. The workflow must support native text parsing, table structure restoration, and OCR image text extraction, as PDF audit reports, Excel cost tables, and scanned document conversions are all used together. Some tables contain merged cells and cross-row data. Conventional chunking logic can easily lose field associations, so row and column structures must be retained without breaking up text. Field formatting varies significantly across different documents, so forced uniform formatting that causes information misalignment must be avoided. Units of financial report data must be clearly bound, so the association between numerical values and their corresponding units must be retained during chunking.
Configuration Settings
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
PARSE_OCR_ENABLE | Enabled | Building construction financial reports contain a large number of completion reports and ledgers in scanned document form, so OCR is required to extract text embedded in images |
PARSE_TABLE_RETAIN_STRUCT | Enabled | Building construction financial report tables contain many merged cells and cross-row data; retaining the table structure prevents loss of field associations |
CHUNK_SIZE | 800–1200 characters | Each chunk for building construction financial reports must contain complete individual cost details or progress payment paragraphs to avoid splitting cross-associated fields |
CHUNK_OVERLAP | 100–150 characters | Cost details and payment receipts and expenditures in building construction financial reports have contextual associations; overlapping chunks preserve relevant information |
PARSE_TABLE_EXTRACT_MODE | Output merged by rows and columns | Building construction financial report tables have many merged cells; merging by rows and columns fully restores the binding relationship between fields and numerical values |
PARSE_FILE_TIMEOUT_SECONDS | 300 seconds | Large completion settlement PDFs contain multiple pages of complex tables, so sufficient time is required to complete full parsing |
The parameter values provided on this page are common recommended starting points for configuration. Actual values are affected by material form, data volume, and business rules. Specific issues require targeted analysis, and it is recommended to test on your own samples before finalizing settings.
Three Common Errors
- Phenomenon: After uploading an Excel-format building construction cost ledger, the knowledge base recall results only contain scattered text with no complete table structure. Cause: The
PARSE_TABLE_RETAIN_STRUCTconfiguration was not enabled, and the default behavior of breaking up table cell content leads to lost field associations. - Phenomenon: After uploading a scanned completion report, only plain text content is recalled, with no associated embedded progress payment table images. Cause: The
PARSE_OCR_ENABLEconfiguration was not enabled, or the image text recall association logic was not configured. - Phenomenon: After chunking, individual project costs are split across two paragraphs, making it impossible to associate numerical values and units through context. Cause:
CHUNK_SIZEwas set based on token count, which does not match the character-based field formatting habits of building construction financial reports, leading to chunking logic that does not align with document structure.
How to Verify Correct Configuration
- Upload a building construction financial report PDF containing scanned documents, check if the parsed results include text embedded in images, and confirm that the
PARSE_OCR_ENABLEconfiguration is active. - Upload an Excel cost table containing merged cells, check if the parsed text retains the row and column structure, and confirm that the
PARSE_TABLE_RETAIN_STRUCTconfiguration is active. - View the chunking logs to confirm that the statistical unit for chunk length is characters, not tokens, which matches the
CHUNK_SIZEconfiguration logic. - Upload a large completion settlement document, check if the parsing task completes within the set time with no timeout errors.
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.