What This Category of Data Looks Like
Air pollution control investment research data primarily comes from real-time or hourly structured data from environmental monitoring stations, annual reports released by industry associations, government policy documents, technical manuals from environmental equipment manufacturers, and public bidding project documents.
Update frequencies fall into three categories: high (monitoring data updated hourly or daily), medium (industry reports updated quarterly or annually), and irregular (policy and project documents released as events occur).
Document structures include three types:
- Structured tables with timestamps, pollutant concentrations, and station IDs
- Long text reports with multi-chapter nested charts and formulas
- Normative official documents with document numbers and effective dates
Constraints Imposed on Document Parsing and Chunking
Structured monitoring data includes fixed fields and uniform units. Chunking must avoid splitting field groups, as this will break data association.
Industry reports and policy documents contain multiple chapters, embedded charts, and formulas. Parsing must retain chapter hierarchy, and chunking must not truncate core content across chapters.
High-frequency updated monitoring data requires incremental updates. Chunking must associate with corresponding timestamp ranges to avoid re-parsing full datasets.
Technical manuals from different sources have non-standard parameter naming. Parsing must extract standardized fields to prevent field confusion after chunking.
How to Set Configurations
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
chunk_size | 800–1200 characters | Air pollution control documents often contain continuous monitoring data sequences and technical descriptions. This range preserves the integrity of a single data group or core content of a single chapter |
chunk_overlap | 100–150 characters | Cross-chunk monitoring time series require contextual continuity to avoid data breaks |
parse_mode | structured+text | Parses both structured monitoring tables and unstructured report text, retaining field and format associations |
max_parse_timeout | 300 seconds | Covers parsing time requirements for large project documents and batch monitoring data files |
enable_increment_parse | true | Adapts to the high-frequency incremental update scenario of air pollution control monitoring data, reducing redundant parsing overhead |
allowed_file_types | .csv, .pdf, .md, .xlsx | Covers mainstream formats for monitoring data files, industry reports, and policy documents |
The parameter values provided on this page are common starting points 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: Documents chunked with a local vector model and uploaded to a server show missing fields or broken content in retrieval results. Cause: Chunking parameters were not unified. Different vector models have distinct chunking logic, resulting in incompatible chunked document structures.
- Phenomenon: Knowledge base chunks display correctly, but Markdown formats cannot be rendered in context references. Cause: Format retention configuration was not enabled during parsing, or chunking truncated the closing tags of Markdown syntax.
- Phenomenon: When an external link is passed, the parsing result is empty or only returns the page title. Cause: No whitelist domain for link parsing was configured, or the default timeout parameter for link parsing in version v4.8.13 was set too low, failing to accommodate loading time for large documents.
How to Verify Correct Configuration
- Upload a standard air pollution control monitoring CSV file, check if the parsed chunks retain complete field rows and timestamp sequences.
- Upload an industry report with Markdown formatting, verify if context references retain tables, heading hierarchies, and other format elements.
- Pass a public air pollution control policy link, confirm that the parsed result extracts complete main content instead of only page metadata.
- Upload an incrementally updated monitoring data file, check if the system only parses new content without performing full reprocessing.
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.