What data for this category looks like
Data for port and shipping business consultation and reply primarily comes from port government service guidelines, shipping company operation procedures, customs filing documents, port fee disclosure documents, and similar materials. Updates are rolled out in real time or on a scheduled basis alongside new route launches, policy adjustments, and workflow optimizations. Document types include long-text PDF service manuals, multi-sheet Excel operation forms, and Word-format service guides. Fields include unique business identifiers such as vessel name, berth number, customs clearance lead time (unit: hours or days), and fee standards (unit: yuan/TEU).
What constraints these characteristics impose on the document parsing and chunking step
The multiple source types of port and shipping service documents mean the parsing process must support PDF, Word, Excel, and other formats. Structured data in Excel forms can easily lose business context during standard chunking. Unique fields and units require that complete business identifiers are retained during chunking, to avoid situations where fields become disconnected from their corresponding values after splitting. Long-text service manuals have significant length; standard chunking logic can break continuous service workflows, so targeted adjustments to chunking rules are needed. Frequently updated documents require configurations optimized for fast parsing, to avoid update delays caused by timeouts.
How to set the configurations
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
chunkSize | 800–1200 characters | Port service documents often contain continuous service workflows; this length preserves complete single business logic |
chunkSplitter | By paragraph + custom delimiters | Port documents have fixed business modules separated by sections such as "application materials" and "processing time limit"; splitting by paragraph preserves module integrity |
customPdfParse | Enable table recognition + header and footer removal | Port PDF documents often include customs clearance and fee tables and repeated headers and footers; this configuration extracts valid business content |
UPLOAD_FILE_MAX_SIZE | 1000 MB | Port service documents include large-scale operation procedure PDFs and multi-sheet Excel files; this upper limit covers standard upload requirements |
PARSE_FILE_TIMEOUT_SECONDS | 600 seconds | Large port document parsing takes significant time; this duration avoids timeout interruptions of parsing tasks |
chunkSettingMode | Manual configuration | Port documents have significant structural differences; manual configuration adapts to different types of service materials |
Three common mistakes
- After uploading a port customs clearance PDF, knowledge base search returns no results, and the interface shows parsing successful. The cause is that the table recognition function of
customPdfParsewas not enabled; valid business content was covered by invalid headers and footers and not extracted. - When
chunkSizeis set to 200 characters, a complete customs clearance workflow is split into multiple scattered fragments, and full processing steps cannot be retrieved during search. The cause is that the chunk length is too short, breaking the continuity of business logic. - After updating FastGPT to v4.17.0, the entry for the original miner-u parsing function cannot be found, leading to incorrect parsing of port documents. The cause is that the legacy parsing function has been replaced by the
customPdfParseconfiguration item; table recognition and format optimization must be enabled via the new configuration.
How to confirm configurations are correct
- Upload a single port service guide PDF, and confirm in the parsing preview page of FastGPT v4.17.0 that table content and headers/footers have been correctly identified or removed.
- Enter the knowledge base search test function, input port-specific business keywords, and confirm that retrieved results include complete service workflows without broken scattered fragments.
- Upload a port operation procedure file larger than 100 MB, wait for parsing to complete, check the task status, and confirm there are no timeout error prompts.
- Enter the knowledge base configuration page, check the value of the
chunkSizeparameter, and confirm it falls within the 800–1200 character range to meet the length requirements of business documents.
The values provided here are common starting points, and should be evaluated against the reader’s own samples.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-28.