What the data for this use case looks like
Financial report data for this use case comes primarily from annual, semi-annual, and quarterly official disclosure reports, as well as standardized submission documents required by banking regulators. Update schedules are fixed: annual reports are released on a fixed cycle after the end of each fiscal year, while semi-annual and quarterly reports are released in fixed windows following the end of each half-year and quarter respectively.
Document structures include standard modules such as consolidated financial statements, discussion and analysis of operating results, risk governance and compliance disclosures, and more. Fields covered include total assets, non-performing loan ratio, core tier 1 capital adequacy ratio, and others. Units are mostly hundreds of millions of yuan and percentage; some detailed operating subjects use ten thousand yuan as the unit of measurement.
Constraints on document parsing and chunking
The fixed update schedule and document volume characteristics of these reports require document parsing and chunking to support batch processing of large files. The multi-field structure with clear measurement units requires that chunking preserves the semantic association between fields and their units, to avoid compromising the integrity of financial indicators after splitting. Cross-page tables and nested notes require the parsing module to recognize and stitch cross-page content, to prevent splitting of complete financial subject information during chunking. Differences in module structures across report types require chunking rules to adapt to structural changes in annual, semi-annual, and quarterly reports, to ensure logical coherence of indexed content.
Configuration Settings
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
chunkSize | 800–1200 characters | Matches the semantic integrity of single segments in financial reports, avoids splitting financial indicators across segments, and ensures reasonable context association |
chunkOverlap | 100–150 characters | Preserves the association between financial subjects and their measurement units across segments, prevents indicators and units from becoming disconnected after chunking |
PARSE_TABLE_ENABLE | Enabled | Financial reports for this use case contain large numbers of structured financial tables. Enabling this setting fully extracts table content and format information, avoiding loss of structured data during chunking |
UPLOAD_FILE_MAX_SIZE | 500 MB | Single annual financial report PDF files are typically large. This value covers the size of most disclosed documents |
PARSE_FILE_TIMEOUT_SECONDS | 300 seconds | Parsing large financial report documents takes significant time. This duration ensures complete parsing without interruption |
split_mode | Split by semantic paragraphs | Financial modules and note content in reports have clear semantic boundaries. Splitting by semantics ensures logical coherence of chunks |
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 against your own samples before finalizing settings.
Three Common Mistakes
- Symptom: Parsing fails when processing the same financial report file after upgrading the version, with the console returning the error
Cannot redefine property: toString. Cause: A version conflict in the built-in parsing dependency package after the upgrade triggers a property redefinition exception for standardized field names that appear repeatedly in financial reports. - Symptom: When the number of chunks for a single financial report exceeds 3000, some content fails to be indexed in the knowledge base. Cause: No chunk upper limit parameter is configured, and the system's default chunk threshold is exceeded, resulting in some segments not being included in the indexing queue.
- Symptom: Cross-page tables in financial reports are split into multiple independent segments, and financial indicators are disconnected from their corresponding measurement units. Cause: Cross-page table stitching configuration is not enabled, so the parsing module only extracts table content within a single page and does not automatically stitch cross-page content.
How to Verify Configuration
- Upload a single typical quarterly financial report document, view the parsed segment list, and verify that structured tables are fully merged into a single segment.
- Randomly sample segment content, check that financial indicators and their corresponding measurement units appear in the same paragraph, with no disconnection.
- View the system backend's parsing logs, confirm that the uploaded file did not trigger a timeout error, and that parsing time meets expectations.
- Modify the chunk length parameter, re-upload the file, and compare changes in the number of segments to confirm that the configuration takes effect.
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.