Declaration Materials and Case File Review for Food Safety Supervision and Sampling: Multi-turn Dialogue and Prompt Engineering

Declaration Materials and Case File Review for Food Safety Supervision and Sampling: Multi-turn Dialogue and Prompt Engineering

What the Data for This Category Looks Like

Data sources for this category include food safety sampling and monitoring systems, the State Administration for Market Regulation sampling results query system, laboratory LIMS systems, and food producer and operator ledgers. Data is updated monthly. Core documents include sampling plans, sampling slips, inspection reports, non-compliant food verification and disposal reports, and risk control announcements. Fields cover sampling numbers, inspection items, non-compliance determination results, verification and disposal processes, and more. The content length of individual documents ranges from hundreds to thousands of characters.

Data is updated monthly, so multi-turn dialogue must limit context to only the current batch of sampling-related documents to avoid cross-cycle data confusion. Core documents include multiple types of structured files, so prompt engineering must clearly define field extraction rules for different document types such as sampling slips and inspection reports. Data sources are scattered, so dialogue calls must uniformly interface with multiple systems to ensure consistent document format acquisition. Individual documents have wide content variation, so the number of context characters passed in a single time must be limited to prevent exceeding model processing limits.

How to Configure the Settings

The following are specific configuration instructions for FastGPT v4.17.0:

Configuration ItemRecommended ApproachBasis for This Approach
chatIdBind to the unique identifier of the sampling batchEnsure multi-turn dialogue for the same batch review shares context and avoids session confusion
messagesLimit to only document summaries and user questions for the current batchFilter expired monthly data and prevent context overflow
variablesPass core fields such as sampling slip number and inspection report numberAccurately match corresponding documents and improve information retrieval accuracy
Context length limit800–1200 charactersAdapt to the average content length of individual core documents and align with model processing capabilities
Timeout threshold600 secondsAdapt to the average response duration of multi-system interface calls and avoid dialogue interruptions

Three Common Misconfigurations

  • Empty data is returned by the dialogue interface. Subsequent inspection reveals that variables were not bound to the sampling batch ID. The cause is failure to filter sampling documents for the corresponding batch via variables, resulting in a retrieval scope covering all monthly data and inability to match the specific content of the user's question.
  • After upgrading the platform version, the messages parameter in the workflow cannot obtain content output by code running. The cause is an adjustment to the binding rules for dialogue message parameters in the new version, with code output results not correctly mounted to dialogue context variables.
  • Short questions trigger delayed streaming output, with excessively long single returned results. The cause is failure to limit the context length of messages, causing the model to load too much redundant historical document data and increasing processing time.

How to Confirm Correct Configuration

  • A question targeting a specific sampling batch is initiated, and chatId is verified against the batch’s unique identifier to ensure correct session context binding.
  • Dialogue logs are reviewed to confirm that messages only contains relevant documents and user interaction content for the current batch, with no cross-cycle redundant data.
  • Short question and long document review scenarios are tested to confirm that response duration meets expectations, with no obvious timeouts or output lag.
  • Core fields in variables are verified for correct passage into the dialogue process to ensure accurate document retrieval matching.

The values provided are common starting points and should be evaluated against the operator’s own 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.