Document Parsing and Chunking for Solid Waste Treatment

What the data for this category looks like

Solid waste treatment enterprise financial report data mainly comes from publicly disclosed annual and semi-annual reports, as well as monthly operation reports and compliance self-inspection documents required by environmental protection regulatory authorities. The data update cycle follows quarterly and annual core schedules, with monthly operation data updated synchronously. Document formats are mostly official PDF financial reports, Excel detailed operation ledgers, and Word compliance descriptions. Core fields include treatment scale (cubic meters/year), unit disposal cost (yuan/ton), landfill storage capacity (cubic meters), equipment operation and maintenance duration (hours/month), and other standard measurement units related to volume, weight, and duration.

What constraints do these characteristics impose on document parsing and chunking

Long text paragraphs in public financial reports often mix compliance explanations and operation data tables. Retain the context associated with table structures during chunking to avoid splitting that disconnects data and explanations. Excel files for monthly operation ledgers often contain multiple worksheets. Distinguish core data pages from auxiliary description pages during parsing to avoid including irrelevant content. Unit identifiers for solid waste treatment data vary across reports. Identify and unify unit prefixes before chunking to ensure subsequent retrieval accuracy. Cross-page data in long-cycle financial reports, such as annual cumulative treatment volume, requires cross-page association markers to prevent data semantic loss from chunk breaks. Some compliance reports use scanned document formats, which increases the difficulty of unstructured text parsing and requires adapted chunking logic.

How to configure settings

Configuration Item	Recommended Value	Rationale
`segment_length`	800–1200 characters	Single-segment data for solid waste financial reports, such as monthly treatment volume details, mostly falls within this range, preventing single chunks from containing excessive cross-topic content
`segment_overlap_rate`	10%–15%	Cross-page/cross-segment associations for solid waste data, such as cumulative treatment volume and monthly data, require retained context continuity. Too low an overlap rate will cause semantic breaks
`PARSE_FILE_MAX_SIZE`	500 MB	File sizes of large annual financial report PDFs or multi-worksheet Excel ledgers typically fall within this range, preventing parsing truncation
`PARSE_FILE_TIMEOUT_SECONDS`	300 seconds	Parsing complex multi-worksheet files takes longer. Timeouts will cause parsing failures
`enable_structured_table_parsing`	Enabled	Solid waste financial reports contain a large number of detailed tables, such as monthly disposal cost lists. Retaining table structures improves subsequent retrieval accuracy
`custom_delimiters`	`[TOC]、第X章、月度汇总`	Chapter divisions in solid waste financial reports mostly use chapter numbers and summary titles as boundaries, enabling precise chunking of chapter content

The parameter values provided on this page are general recommendations for establishing configuration baselines. Actual values are affected by document format, data volume, and business rules. Specific issues require individual analysis. It is recommended to test on your own samples before finalizing settings.

Three common configuration mistakes

Symptom: In a local deployment of version v4.8.14, uploading a solid waste financial report PDF results in a parsing failure status, with the log returning 408 Request Timeout. Cause: The PARSE_FILE_TIMEOUT_SECONDS parameter was not adjusted. The default value is too low to complete parsing of large financial report files.
Symptom: In the parsed chunking results, table data is separated from contextual text, and field correspondence is lost. Cause: The enable_structured_table_parsing configuration was not enabled. Chunking was performed only as plain text, and table structure associations were not retained.
Symptom: Custom JS parsing methods do not take effect, and solid waste data unit formats cannot be unified. Cause: The custom JS script was not bound in the knowledge base's post-parsing processing module, or the script syntax contained errors that caused execution interruption.

How to confirm the configuration is correctly set

Upload a single solid waste financial report file of conventional size. Confirm that parsing progress completes without timeout or parsing failure error prompts.
Randomly select a chunked content segment. Verify that it contains complete table data and associated context, with no content breaks or field misalignment.
Access the configuration page of the corresponding knowledge base. Confirm that the settings for enable_structured_table_parsing and custom_delimiters match the preset plan.
Perform a chunking test. Check whether the character length of the chunks meets the preset segment_length interval requirements.

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.