What the data for this category looks like
Data sources for building engineering research reports include public policy documents from housing and urban-rural development authorities, industry updates from industry associations, technical plans from design institutes, project announcements from bidding platforms, and project review reports from real estate enterprises. Update rhythms vary by document type: policy documents update in real time alongside policy releases. Bidding announcements update concurrently with project approval. Industry technical reports are mostly released quarterly or semi-annually. Document structures mix policy clauses, structured budget tables, long-text construction process descriptions, and parameter entries with clear units. Common fields include floor area, project cost, construction duration, and qualification level requirements.
What constraints these characteristics impose on document parsing and chunking
The multi-source, heterogeneous format of building engineering research reports requires parsing components to support multiple input types including PDF, Word, and scanned documents. Scanned documents require OCR functionality to extract text. The large number of structured tables and long-text process descriptions in documents requires chunking logic to preserve table integrity, and avoid splitting table content across chunks. The clear binding relationship between units and parameters requires chunking to retain contextual association of adjacent text, preventing parameters and their corresponding units from being split into different chunks. When batch parsing documents with different update rhythms, the system must adapt to parsing time requirements of different scales. This avoids timeouts for small documents or incomplete parsing for large documents.
How to Set Configurations
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
PARSE_OCR_ENABLE | Enabled | Building engineering research reports often include scanned bidding announcements and design institute construction drawings. OCR is required to extract printed text and annotated text. |
PARSE_TABLE_KEEP_STRUCT | Preserve complete table chunks | Building engineering documents include structured tables such as budget lists and material ratio tables. This prevents table content from being split into scattered text. |
chunk_size | 1000–1200 characters | Building engineering research reports include long-text construction process descriptions and parameter entries with units. This length balances contextual association and chunk granularity. |
chunk_overlap | 100–150 characters | This prevents contextual breaks when long process descriptions or parameter descriptions are split, and retains the association between parameters and their corresponding units. |
PARSE_FILE_TIMEOUT_SECONDS | 300 seconds | Large complete design institute reports and batch bidding announcements take longer to parse. This duration covers parsing needs for most documents. |
UPLOAD_FILE_MAX_SIZE | 500 MB | Building engineering documents often include high-definition drawing attachments. This upper limit supports uploading large format files. |
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 individual analysis. It is recommended to test on your own samples before finalizing settings.
Three Common Mistakes
- Issue: Unable to select table parsing results for building engineering projects in the knowledge base dataset list. Cause: The
PARSE_TABLE_KEEP_STRUCTconfiguration is not enabled. Parsed tables are not recognized as independent dataset entries. - Issue: After uploading a scanned building engineering construction plan, the parsing result only extracts a small amount of text. Cause: The
PARSE_OCR_ENABLEfunction is not enabled. Full content from scanned documents cannot be recognized. - Issue: After using default chunking parameters, the budget split table for building engineering projects is split into multiple unrelated chunks. Cause: Default
chunk_sizeandchunk_overlapparameters do not adapt to the structured characteristics of building documents, leading to excessive splitting of tables and long text.
How to Confirm Configurations Are Correctly Set
- Upload a single building engineering bidding announcement PDF. Check if tables in the parsing result retain complete row and column structures, to confirm the
PARSE_TABLE_KEEP_STRUCTconfiguration is active. - Upload a scanned building engineering construction drawing for parsing. Verify that dimension markings and text descriptions in the drawing are extracted, to confirm the OCR function is enabled.
- Adjust chunking parameters, then search the knowledge base. Confirm that construction process parameters and their corresponding units appear in the same text chunk, to verify the chunk overlap length setting is reasonable.
- Batch upload multiple building research reports in different formats. Check the timeout status of parsing tasks, to confirm the
PARSE_FILE_TIMEOUT_SECONDSparameter adapts to document scale.
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.