What the Data for This Category Looks Like
Feed-related yield rates and market trend data primarily comes from national feed monitoring stations, national major agricultural product wholesale market quotation systems, and futures exchange linked variety market trends. Update cycles fall into three categories: spot quotations are updated once daily, futures market trends update in real time during trading hours, and monthly industry supply and demand briefings are released. Data is stored in structured table format, including fields such as feed variety name, production area, quotation date, transaction average price, and unit of measurement. The unit of measurement is uniformly yuan/ton.
Constraints Imposed on Multi-turn Dialogue and Prompt Engineering
Feed data sources are scattered and update cycles vary significantly. Multi-turn dialogue must first clarify the data type required by the user to avoid confusion between spot quotations, futures market trends, and monthly briefing data. There are many structured fields, so the prompt must limit the range of returned fields to prevent irrelevant information from being output. The unified unit of yuan/ton must be clearly marked in the prompt to ensure consistency of output results. Feed varieties cover a wide range, so multi-turn dialogue must support users to gradually add filtering conditions such as variety and production area to narrow the query scope. Differences in update times across different data sources must be noted in the dialogue to prompt the latest update time of the data, avoiding returning outdated information.
Configuration Settings
| Configuration Item | Recommended Approach | Rationale |
|---|---|---|
systemPrompt | Include the fixed prefix: "Only return data related to feed yield rates. Fields must include variety, production area, average price, unit, and clearly mark the data update time", then append the user's query request | Matches the field requirements of feed data and the information supplement logic of multi-turn dialogue |
maxContext | 1200–1800 characters | Adapts to the length of structured tables of feed data, avoiding information loss caused by context overflow |
chatId | Enable session persistence, use a user-unique identifier string | Supports associating historical context for multi-turn dialogue, matching session management requirements |
maxHistoryLength | First 10 rounds of dialogue | Filters redundant history, focuses on context related to the current query, avoiding interference from irrelevant history on results |
recallTopK | First 6–8 entries | Covers market trend data of common feed varieties, avoiding incomplete results caused by insufficient recall |
similarityThreshold | 0.72–0.80 | Balances recall accuracy and coverage, adapting to the refined query requirements of feed varieties |
The parameter values provided on this page are conventional recommendations used as a starting point for configuration. Actual values are affected by material form, data volume, and business rules. Specific issues require individual analysis, and it is recommended to conduct tests on your own samples before finalizing settings.
Three Common Implementation Errors
- When the API is called with the
chatIdparameter, the conversation log fails to associate with the corresponding identifier, and the returned result does not retain historical context. For the open-source version V4.9.7, verify that the session persistence enablement steps are not omitted, or that the submittedchatIdformat is compliant. - After a guest user deletes a conversation, the background operation log is also cleared. The cause is that the log binding logic for guest sessions does not distinguish between temporary sessions and persistent sessions, and the delete operation directly clears the associated log data.
- Feed data returned during multi-turn dialogue lacks unit markings, or uses mixed units of measurement. The cause is that the
systemPromptdoes not explicitly mandate the unified use of yuan/ton as the unit of measurement, and does not verify the compliance of output fields.
How to Confirm Proper Configuration
- Call the API with a test
chatId, check if the background conversation log displays the corresponding identifier to verify that the session association function works correctly. - Construct a query with multiple rounds of filtering conditions, confirm that the returned result narrows the scope step by step and meets the field requirements set by the prompt.
- Trigger a data query, check if the returned result marks the data update time and the unit of yuan/ton, with no abnormal fields.
- Simulate guest user operations, delete a conversation, then check if the background log retains the corresponding session record to verify the log persistence configuration.
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.