What the data for this category looks like
The data for chemical fiber industry research reports comes primarily from domestic industry self-regulatory organizations, regularly disclosed documents of publicly listed companies, and public data from commodity trading platforms. Update cycles follow weekly segmented category updates, monthly supply and demand reports, and quarterly industry overviews. Some policy interpretation content is released temporarily alongside industry developments. Most documents use Markdown format, with structures including core metrics sections, segmented category updates, import and export data, policy summaries, and other hierarchical layers. Fields include price (unit: yuan/ton), production capacity (unit: 10,000 tons), month-on-month/year-on-year growth rates, and other standardized data. Some content includes structured tables.
What constraints do these characteristics impose on knowledge base retrieval and recall?
The multi-source and dispersed nature of chemical fiber research reports requires the retrieval link to configure differentiated weights for different data sources, to avoid non-authoritative data interfering with recall results. The weekly and monthly update rhythm requires the knowledge base to support periodic incremental updates, to avoid loading expired or duplicate content. The structured hierarchical document structure requires recall chunks to retain title subordinate relationships; otherwise, the logical connection of "segmented category - core metrics" will be lost. The presence of specific fields and units requires retrieval to match unit keywords, to prevent recall of mismatched category data such as "yuan per kilogram". Additionally, long-text research report content requires proper chunk splitting to avoid single chunks containing off-topic irrelevant information.
How to set the configurations
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
parse_file_mode | structured_markdown | Chemical fiber research reports are mostly structured Markdown formats. Retaining title hierarchies avoids losing the subordinate logic between segmented categories and corresponding data |
chunk_size | 800–1200 characters | Adapts to the length of single-segment core data in chemical fiber research reports, avoiding splitting content blocks across segmented categories |
chunk_overlap | 150 characters | Retains contextual association between adjacent chunks, ensuring retrieval can cover cross-segment hierarchical information |
similarity_threshold | 0.72–0.80 | Chemical fiber category keywords have high recognition. This threshold filters irrelevant general commodity data |
rerank_top_k | Top 6 entries | There are many chemical fiber segmented categories. Reranking prioritizes matching user-specified segmented category needs |
incremental_update_interval | 7 days | Matches the main weekly update cycle of industry public research reports, avoiding frequent loading of duplicate data |
UPLOAD_FILE_MAX_SIZE | 1000 MB | Adapts to the conventional size of most chemical fiber research report attachments, avoiding upload failures |
The parameter values provided on this page are all conventional recommendations used as starting points for configuration. Actual values are affected by material form, data volume and business rules. Specific issues require specific analysis, and it is recommended to test on your own samples before finalizing.
Three common misconfigurations
- Phenomenon: After importing Markdown-formatted chemical fiber research reports, retrieval results lose the subordinate relationship between titles and content. When searching for "POY price", content from the nylon sector is recalled. Cause: The
parse_file_modeconfiguration was not set tostructured_markdown, and only plain text segmentation was used, causing the loss of title hierarchy associations. - Phenomenon: Extra spaces appear between numbers and text in retrieval results, such as "12000 yuan/ton" displayed as "12000 yuan/ton". Cause: The
clean_extra_whitespaceparameter was not enabled, or redundant spaces generated by automatic typesetting during document import were not preprocessed. - Phenomenon: When uploading Excel-formatted chemical fiber supply and demand data tables, the interface prompts "unsupported file format" or upload fails. Cause: The
enable_excel_parseconfiguration item was not enabled, or the uploaded file exceeded the set limit ofUPLOAD_FILE_MAX_SIZE.
How to confirm configurations are correctly set
- Upload a test structured Markdown-formatted chemical fiber research report, check if the parsed content retains the subordinate relationship between titles and paragraphs, and confirm that the parsing mode configuration is effective.
- Enter test keywords including "yuan per ton" and "10,000 tons", check if the retrieval results match content with corresponding units, and confirm that the field matching logic configuration is effective.
- Manually trigger an incremental update, check if the newly added research reports in the knowledge base are public content from the last 7 days, and confirm that the update cycle configuration is effective.
- Upload a small Excel-formatted chemical fiber supply and demand data table, confirm that the interface prompts support upload and correctly parse the table content, and confirm that the file parsing configuration is effective.
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.