This document is written based on FastGPT v4.17.0.
What the data for this category looks like
Data for precast concrete components comes from BIM detailed design files, rebar and concrete batch ledgers, mold table and curing kiln operation records, laboratory test reports, and component QR code traceability systems. Update frequency follows per single component, per batch, or per curing kiln. Corresponding documents include component detailed drawings, rebar cutting lists, mold inspection records, pouring and vibration records, curing records, and demolding and factory inspection reports. Fields include component ID, rebar diameter, curing temperature, demolding strength value, and others. Most units are millimeters, degrees Celsius, and megapascals.
What constraints these characteristics impose on multi-turn dialogue and prompt engineering
Data for precast concrete components is scattered across multiple sources and updated frequently. Multi-turn dialogue must link contextual data from different systems. Update cadences of per single component or per batch require dynamic loading of the latest batch business parameters to avoid using outdated data. Complex document structures require prompts to explicitly specify extraction of fields from different document types. Each component corresponds to a single lifting position, so dialogue must link the component’s unique ID. Severe consequences of errors require multi-turn dialogue to retain context from key verification steps to ensure accuracy of maintenance and inspection work.
How to set the configurations
| Configuration Item | Recommended Approach | Rationale |
|---|---|---|
chatId | Bind to the unique QR code ID of the current component | Precast concrete components have exclusive traceability QR codes. This parameter links all dialogue, inspection, and maintenance records for the corresponding component. |
variables | Load the current batch’s rebar cutting list and curing kiln parameters | Precast component data is updated per batch. This parameter dynamically calls the latest business data for the target batch. |
messages | Retain the most recent 10 rounds of dialogue and core document fragments | A large number of inspection records accumulate during multi-turn dialogue. This parameter controls context length to avoid exceeding processing limits. |
| Maximum context length | 8000–10000 characters | Documents such as component detailed drawings and pouring records are lengthy. Sufficient context must be retained to support accurate question answering. |
| Question optimization | Calibrate based on actual measurements | User questions include professional terms such as demolding strength and sleeve spacing. Optimization improves recognition and understanding accuracy for these terms. |
Three Common Misconfigurations
- Symptom: When calling code block extraction functionality in a prompt, the returned result shows the code block as undefined. Cause: The
variablesparameter was not used to bind the document fragments corresponding to the current component, so the system cannot locate the data source for the specified code block. - Symptom: After deleting a single dialogue record, the equipment inspection log associated with that dialogue is also removed. Cause: No unique binding relationship between dialogue and component was established via the
chatIdparameter. Logs are not stored independently and are deleted along with the dialogue. - Symptom: The prompt cannot correctly reference the component strength parameter mentioned in the previous dialogue turn. Cause: No multi-turn dialogue context retention rules were configured, so the system did not load key business data from the previous turn.
How to Verify Proper Configuration
- When the QR code ID of a test component is input, confirm that the
chatIdis correctly bound and loads the business data for the corresponding batch. - When a multi-turn dialogue is initiated and an inspection question containing professional terms is entered, confirm that the system can correctly identify and link historical dialogue content.
- When a single dialogue turn is deleted, confirm that the associated inspection log is retained and not removed.
- When reviewing the prompt configuration, confirm that the
variablesparameter has been used to bind documents such as the rebar cutting list and curing records.
The values provided are common starting points and should be measured against the reader's own samples.