Investigations
Specialized AI agents investigate semiconductor sensor excursions, fact-check all cited findings against raw telemetry, and prepare actionable work orders for engineering sign-off.
How Investigations Work
Yield Guardian deploys specialized AI agents to isolate root causes when wafer sensor anomalies fire. Every finding is strictly validated against telemetry before opening maintenance work orders.
Line Excursion Trigger
Statistical Process Control
An alarm triggers when Hotelling's T², SPE (Q), or defect risk exceeds baseline limits on a wafer unit.
Multi-Agent Telemetry
Sensor & Tool Retrieval
Investigator agents query FDC telemetry, SHAP feature attributions, and sensor health metrics.
Grounded Synthesis
Deterministic Fact-Check
Writer agent synthesizes findings; verifier guarantees every cited figure matches raw sensor evidence.
Engineering Sign-off
Actionable Maintenance
The line engineer reviews findings, selects corrective actions, and dispatches a tracked work order.
Example 1
Recorded once on the server and replayed without calling a model. Every visitor sees the same example, and nobody decides it.
| Investigation | Status | From | Started | Points | Work order |
|---|---|---|---|---|---|
| Failure-risk alarm on unit 1303Recorded | Awaiting decision | Alarm AL-1303-risk | 0.01122 | – |