Module training 

Structs

DqnTrainer

The imperative training driver for DQN.

RunMetadata

Persisted metadata for a training run.

SessionConfig

Configuration for a TrainingSession.

StepMetrics

Metrics emitted after every environment step.

TrainIter

TrainingRun

Manages the on-disk artefacts for a single training run.

TrainingSession

A self-contained, loop-agnostic training coordinator.