What the data for this category looks like
Water industry research report data mainly comes from public statistics released by the China Urban Water Supply and Drainage Association, securities research reports in the public utility sector, regular reports of listed water companies, and public water operation data from local housing and urban-rural development departments. Data update frequency varies by document type: Listed company annual reports are updated quarterly and annually. Industry monthly statistical data is released monthly. Regulatory policy documents are updated irregularly. Document formats include PDF research reports with embedded multi-column business tables, and standalone Excel operational statistical reports. Common fields include average daily water supply volume, sewage treatment volume, unit water treatment cost, and total pipe network length. Corresponding units are ten thousand cubic meters, ten thousand tons per day, yuan per ton, and kilometers respectively.
Constraints imposed on document parsing and chunking
The multi-table embedded and multi-field associated characteristics of water industry research reports create multiple constraints for document parsing and chunking. For PDF documents with embedded business tables, cell cross-page splitting often occurs during parsing. This splits a single piece of business data into two segments. For standalone Excel reports with multi-column structures, default automatic chunking splits complete cross-column business rows into multiple fragments. This breaks data relevance. Water industry data has strong field binding. For example, water supply volume and corresponding water treatment cost must belong to the same chunk. Otherwise, complete business conclusions cannot be formed after retrieval. When long-text research reports contain multiple regional water industry data, fixed-length chunking splits continuous operational information for the same region.
How to set the configurations
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
PARSE_TABLE_ENABLE | Enabled | Water industry research reports contain a large number of structured business tables. Enabling this option can fully extract business data within cells and avoid missing table information during text parsing |
AUTO_CHUNK_SEGMENT_LENGTH | 800–1200 characters | Business blocks in water industry research reports usually contain 2-3 associated fields. This length can accommodate complete business units and avoid splitting associated data across chunks |
CHUNK_OVERLAP_RATE | 10%–15% | Water industry data has strong relevance. Overlapping chunks can ensure that cross-chunk business information is fully recalled, avoiding key associated data being split at chunk boundaries |
UPLOAD_FILE_MAX_SIZE | 500 MB | Some monthly statistical Excel reports in the water industry have large individual file sizes. This threshold can cover conventional upload requirements |
PARSE_FILE_TIMEOUT_SECONDS | 300 seconds | Parsing large Excel reports or multi-page PDF research reports takes a long time. This duration can avoid parsing failure due to timeout mid-process |
SKIP_PARSE_DUPLICATE_HEADER | Enabled | Water industry statistical Excel reports often contain repeated header rows. Enabling this option can automatically skip redundant headers and reduce invalid information within chunks |
The parameter values provided on this page are conventional recommendations used as a starting point for configuration. Actual values are affected by material format, data volume, and business rules. Specific issues require case-by-case analysis. It is recommended to test on your own samples before finalizing settings.
Three Common Mistakes
- Phenomenon: After uploading a multi-column water industry statistical Excel file, the automatic chunking result splits complete cross-column business rows into multiple independent fragments. Cause: The table parsing switch is not enabled, or the chunking rule is not adjusted to split by row. This causes chunking to split randomly by text width, destroying the integrity of business data.
- Phenomenon: When parsing a water industry research report PDF, cell content from cross-page tables is split across different chunks. Cause: The configuration item for merging cross-page tables is not enabled. This splits cross-page business data and prevents the formation of complete business information chunks.
- Phenomenon: When batch uploading water industry documents, the parsing log includes content from previously uploaded documents. Cause: The filter switch for only parsing the currently uploaded file is not enabled. This causes the system to load documents from the historical knowledge base to participate in the current parsing, creating redundant parsing tasks.
How to Verify Correct Configuration
- Upload a small water industry Excel statistical report, review the parsed chunk content, and confirm that business rows are not split across columns.
- Upload a PDF research report containing cross-page tables, and check whether the chunking result merges cross-page table cell data.
- Upload a single water industry document, review the parsing log, and confirm that only the currently uploaded document is parsed, with no historical document content included.
- Test retrieval of water industry business data, and confirm that associated water supply volume and cost data appear in the same or adjacent chunks.
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.