What the Data for This Category Looks Like
The data for chemical fiber financing daily reports comes from public daily industry ledgers released by chemical fiber industry associations, chemical fiber category market data from bulk commodity spot trading platforms, chemical fiber import and export financing information published by the General Administration of Customs, and corporate financing filing data from regional petrochemical parks. The data updates full information from the previous trading day each day. Documents are presented as a combined multi-table format, including modules such as same-day spot quotes, operating load, inventory turnover, regional financing flow, and credit limit changes. Core fields include product code, quotation unit (yuan/ton), operating rate unit (%), financing amount unit (ten thousand yuan), and statistical cycle. No additional redundant unstructured descriptive content is included.
Constraints on Knowledge Base Retrieval and Recall
The multi-table structured document format requires the retrieval system to retain field metadata for precise matching. Generic text segmentation logic cannot be used here. The daily high-frequency update feature requires the knowledge base to support incremental updates using the date field. This avoids repeated import of historical data. Specific unit and field rules require metadata filtering during retrieval. This excludes recall results from unrelated categories and prevents incorrect matches caused by unit mismatches. Financing-related segmented fields must be distinguished from general industry data. Dedicated keyword filtering rules must be configured to avoid recalling non-chemical fiber category financing data.
Configuration Settings
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
PARSE_STRUCTURED_TABLE | Enabled | Chemical fiber financing daily reports use a multi-table core structure. Enabling this option retains field metadata and prevents incorrect splitting of structured content |
UPLOAD_FILE_MAX_SIZE | 50 MB | A single standardized chemical fiber financing daily report document typically does not exceed 10 MB. This value reserves sufficient redundancy for batch upload scenarios |
maxContext | 800–1200 characters | The paragraph length of single tables in chemical fiber financing daily reports ranges from 600–1000 characters. This range adapts to the input length limits of mainstream vector embedding models |
recall_top_k | Top 6 entries | A single daily report contains financing data for approximately 6 core chemical fiber product categories. Too many recalled entries will introduce redundant non-core information |
SIMILARITY_THRESHOLD | 0.72–0.78 | Keywords for chemical fiber categories have high distinctiveness. A threshold that is too low will recall non-chemical fiber category data, while a threshold that is too high will miss valid recall results |
FILTER_BY_METADATA | Enabled | Date and product code filtering must be applied to remove duplicate or expired data. This ensures the timeliness and accuracy of recall results |
The parameter values provided on this page are common starting points for configuration. Actual values are affected by material form, data volume, and business rules. Specific issues require targeted analysis. It is recommended to test on your own samples before finalizing settings.
Three Common Mistakes
- An
embedding errorerror occurs when uploading a chemical fiber financing daily report document, and the interface prompts that vector conversion failed. Cause: The document contains non-standardized unit fields (such as mixed use of "yuan" and "yuan/ton"), which prevents the embedding model from correctly parsing structured fields. - A
500 Internal Server Erroris returned when creating a new knowledge base using the 4.8.9 version deployed with docker-compose. Cause: The read/write permissions for the/app/data/knowledge_basedirectory are not correctly mounted, preventing cached files generated after structured parsing from being written. - After configuring the knowledge base search plugin, the dedicated chemical fiber category knowledge base cannot be dynamically selected via variables. Cause: The metadata tags of the knowledge base are not configured as variable filtering conditions, so the plugin cannot recognize the dedicated identifier of the target knowledge base.
How to Verify Successful Configuration
- Upload a single standardized chemical fiber financing daily report document, and check if the parsing interface retains all structured fields completely, with no garbled characters or incorrect field splitting.
- Enter specified category keywords such as "polyester staple fiber financing" and "PTA credit" to initiate a retrieval, and verify that the recall results only include financing data for chemical fiber categories, with no recall content from unrelated categories.
- Trigger an incremental update task, and confirm that only new data from the current day is imported into the knowledge base, with no duplicate historical data being recalled repeatedly.
- View the vector embedding logs, and confirm that there are no
embedding errorerrors, and that parsing time meets the presetPARSE_FILE_TIMEOUT_SECONDSthreshold 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.