Trait TrainingObserver 

pub trait TrainingObserver {
    type Error: Display;

    // Required method
    fn on_step(
        &mut self,
        event: TrainingStepEvent<'_>,
    ) -> Result<(), Self::Error>;
}

Receives one TrainingStepEvent after each successful network step.

Returning Err aborts the session before the next example is stepped. The failing step’s network update has already been applied.

This trait is generic (statically dispatched). There is no dyn call on the session hot path.

Required Associated Types

type Error: Display

Error type that aborts the session. Displayed in crate::TrainerError::Observer.

Required Methods

fn on_step(&mut self, event: TrainingStepEvent<'_>) -> Result<(), Self::Error>

Called once after a successful crate::PlasticityTrainer::train_step.

Errors

Any error aborts the session immediately; the next example is not processed.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<F, E> TrainingObserver for F

where F: FnMut(TrainingStepEvent<'_>) -> Result<(), E>, E: Display,

type Error = E