What This Category of Data Looks Like
Query result report data primarily originates from internal system document attachments, business ledger export files, and monthly/quarterly operational analysis reports of state-owned enterprises. Supported import file types include Excel spreadsheets, PDF report exports, and structured text files. Update rhythm follows fixed cycles for most content; some temporary reports generated on demand update more frequently. Single documents are mostly in structured format, containing fixed fields such as report number, generation date, responsible department, statistical item name, corresponding value and unit, paired with a small amount of explanatory text. Fields and units are tightly bound. Numerical content must clearly correspond to statistical dimensions to avoid ambiguity.
Constraints Imposed on Vector Models and Indexing
The characteristic of structured fields bound to units requires that the association between fields and numerical values be retained during index construction, to avoid damaging semantic integrity during splitting. The fixed-cycle update feature means high-frequency incremental indexing is not necessary, but single documents imported in bulk are large in size. Chunk granularity must be controlled to prevent index construction timeouts. At the same time, numerical content and textual explanations within reports require separate encoding logic, to ensure that statistical items and corresponding values can be accurately matched during retrieval. The computational load of hybrid retrieval increases with the number of structured fields, which may affect response speed. Targeted adjustments to retrieval configuration are required.
Configuration Settings
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
| Chunk Length | 800–1200 characters | Adapt to the average length of a single statistical item plus explanation within reports, avoid splitting associated content across fields |
| Overlap Length | 100–150 characters | Retain field association information for adjacent chunks, prevent loss of binding between statistical items and numerical values during retrieval |
maxToken | 8192 token | Adapt to context splicing requirements for long reports, comply with call restrictions of mainstream large model APIs |
| Similarity Threshold | 0.72–0.85 | Filter low-match report entries, reduce interference from irrelevant results for internal system and data queries |
| Single Search Limit | Top 10 entries | Control the number of reports returned per retrieval, balance recall scope and response speed |
defaultToken | 4096 token | Adapt to context display requirements for single retrieval results, avoid exceeding front-end display limits |
Three Common Misconfigurations
- Retrieval request timeout, with response duration exceeding 10 seconds. Cause: Hybrid retrieval is enabled without adjusting chunk configuration, resulting in excessive index loading and retrieval computational load.
- System stuck during index building, unable to complete knowledge base initialization. Cause: Chunking rules not adjusted for the structured fields of reports, resulting in single chunks exceeding system processing thresholds.
- Valid index cannot be generated after importing unsupported file types. Cause: File filtering not configured in advance to only allow import of Excel, PDF, and structured text report files.
How to Confirm Configuration Is Correct
- Manually upload a single typical query result report, check whether the index generation progress of the FastGPT v4.17.0 system is completed within the preset duration.
- Initiate a simulated retrieval request, verify that the response duration meets expectations, and that the hybrid retrieval switch status and configuration parameters match.
- Randomly select retrieval results, check whether returned entries include complete field names, numerical values, and corresponding unit information.
- View system background logs, confirm that there are no error records or timeout prompts for index construction failures, and that only records of successfully imported supported file types are displayed.
The values listed are common starting points and should be evaluated against local 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.