Sensor networks change: stations are added, removed, or fail. Standard forecasting models break when the number of sensors changes, requiring retraining. They also cannot predict at a location they never saw during training.
OmniST is a forecaster built so its internal computations do not depend on the total number of sensors. It uses sensor coordinates to find nearby neighbors and processes each sensor independently. This lets it work with any number of sensors, old or new.
The model predicts air pollution levels at never-seen stations about 12 percent more accurately than simple interpolation. More importantly, it provides prediction intervals that, with 90 percent or higher probability, contain the true value, even when up to half the training sensors are removed. This guarantee holds without retraining.
