Document Parsing and Chunking for Thermal Financing Daily

What the data for this category looks like

Thermal financing daily report data originates from regional public utility regulatory announcement platforms, daily operation disclosure documents of thermal operation enterprises, and public financing announcements from regional energy trading markets. Updates are published daily for single-region thermal industry financing trends. Each daily report covers newly added and the past 7 days’ thermal-related financing projects. Most documents are structured PDFs or tabular Word files, with fixed fields including release date, thermal project entity, total financing amount, financing channel, corresponding heating renovation and maintenance project name. Total financing amount is measured in ten thousand RMB, and corresponding project heating area is measured in ten thousand square meters.

Constraints for Document Parsing and Chunking

First, structured documents with cross-page financing project entries can cause standard chunking logic to split the complete information of a single project. Context association at the entry level must be preserved. Second, total financing amounts include thousand separators and units. Parsing logic must accurately recognize the binding between numeric values and their units, to avoid units becoming detached from their corresponding values after chunking. Third, daily updated batch document volumes are large. Parsing and chunking processes must adapt to timeout risks from high-frequency batch processing, and filter duplicate already parsed project entries. Fourth, document formats vary across sources. Some documents lack table borders, so the field extraction logic must adapt to borderless tables.

Configuration Settings

Configuration Item	Recommended Value Range	Rationale
`maxChunkSize`	800–1200 characters	Single financing project descriptions in thermal financing daily reports are typically 300–800 characters. This range reserves sufficient space for project entities, amounts and use cases, to avoid splitting a single complete project.
`chunkOverlap`	100–150 characters	Preserves project context across chunks, to avoid disconnecting financing amounts from their corresponding project names after chunking.
`parseTableMode`	`structured-table-only`	Adapts to structured tabular daily reports, prioritizes extracting bound fields from tables, and ignores unstructured surrounding text.
`PARSE_FILE_TIMEOUT_SECONDS`	300–400 seconds	Single batch documents contain multi-page tables, so sufficient time must be reserved for full-page parsing and field binding.
`filterDuplicateChunks`	Enabled	Filters duplicate general financing clauses from thermal enterprises that appear daily, to reduce redundant chunks.
`batchParseMaxSize`	50 documents per batch	Adapts to daily high-frequency batch upload requirements, to avoid parsing queue blocking from overloaded single batches.

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 targeted analysis. It is recommended to test on your own samples before finalizing settings.

Three Common Misconfigurations

Symptom: After uploading a thermal financing daily report PDF, the interface shows no parsing progress prompt, and search tests return empty results. Cause: The enableParseLog parameter is not enabled, and no table parsing field mapping rules are configured, resulting in structured data not being correctly extracted and stored.
Symptom: When batch uploading multiple thermal financing daily reports, the vectorization process takes longer than expected, and some tasks trigger timeout errors. Cause: No reasonable threshold is set for batchParseMaxSize, and too many documents are uploaded in a single batch, causing parsing queue blocking.
Symptom: When entering non-document-related text questions, the system triggers the document parsing process. Cause: The autoParseQuery parameter is not correctly configured to the disabled state, so all input content is sent to the document parsing link by default.

How to Verify Correct Configuration

Upload a single standard thermal financing daily report PDF, check if preset fields such as "total financing amount" and "project name" are extracted in the parsing log, and verify that field binding is correct.
Initiate a batch upload test, adjust the batchParseMaxSize parameter, and observe whether queue processing time meets expectations, with no timeout errors.
Test non-document text questions, confirm that the system does not trigger the document parsing process, and that conversation responses function normally.
Upload duplicate thermal financing project documents, confirm that the filterDuplicateChunks parameter takes effect, and that no redundant chunks are generated.

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.