What this category of data looks like
Special steel research report data primarily comes from industry monthly reports published by industry associations, internal production weekly reports from key mills, and research documents from professional metal consulting institutions. Updates follow a monthly regular release cadence. Additional releases are issued when iron ore price fluctuations, industry policy adjustments, or major production capacity changes occur. Most documents are in PDF format. They include three types of content: supply and demand overview, price trends, and analysis of specialized grades. Fields include special steel grades, ex-factory unit price (yuan/ton), monthly production volume, and usage data for downstream application coverage areas. Units follow industry standard metrics such as tons and yuan.
Constraints on knowledge base retrieval and recall
Diverse data sources and inconsistent formatting for special steel research reports require the knowledge base parsing process to support multiple text splitting workflows, and prevent loss of structured data. The mixed regular and ad-hoc update cadence requires configuring incremental update triggers. Only run index updates when new data is added, to reduce resource consumption. Dense specialized terminology and clearly defined segmented fields require enabling industry-specific thesauri to optimize semantic matching. Set up field-level recall rules to accurately match core information such as special steel grades and prices, and avoid irrelevant content from appearing in search results.
Configuration Settings
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
PARSE_FILE_TIMEOUT_SECONDS | 900 seconds | Special steel research reports often contain multi-page structured tables and long-form text analysis, with longer parsing times than general documents |
chunk_size | 1500–2000 characters | Preserve semantic integrity of specialized terminology and segmented data, avoid broken associations after splitting |
recall_top_k | Top 8 results | Filter redundant recall results, accurately match core business fields such as special steel grades and prices |
similarity_threshold | 0.75–0.85 | Adapt to semantic matching accuracy for specialized terminology, filter low-match irrelevant research report content |
ENABLE_INCREMENTAL_SYNC | Enabled | Adapt to the regular and ad-hoc update cadence of special steel research reports, reduce resource consumption from full index updates |
RERANK_TOP_N | Top 3 results | Focus on high-match core research report content, avoid introducing irrelevant data during re-ranking |
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. Analyze specific cases individually, and recommend testing against your own samples before finalizing settings.
Three common misconfigurations
- Issue: After increasing the
maxContextconfiguration, search results still do not cover the full context, or abnormal splicing of context fragments occurs. Cause: Thechunk_overlapandrecall_top_kparameters are not adjusted synchronously, resulting in recalled knowledge base fragments that cannot be fully spliced into the required context. - Issue: After importing special steel research reports, search results include non-target content such as general steel industry news. Cause: No field-level recall rules are configured, and document fragments from non-specialized steel segments are not filtered out.
- Issue: When calling the knowledge base chat interface, the returned
file_namefield is empty, and the filename information for uploaded research reports cannot be retrieved. Cause: Metadata extraction functionality is not enabled in the file parsing configuration, so basic information such as filenames is not recorded in the index.
How to confirm configurations are correctly applied
- Upload a test special steel research report, check if parsed text fragments retain specialized terminology and core data fields, to confirm parsing configurations are active.
- Submit a search request, verify that the number and matching degree of recall results align with preset configuration rules, to confirm recall and similarity threshold configurations are active.
- Trigger an incremental update, check if only newly added research reports are included in the index, to confirm incremental sync configurations are active.
- Call the knowledge base metadata interface, check if the returned
file_namefield includes the names of uploaded files, to confirm metadata extraction configurations are active.
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.