History Callback

Saves the training and validation history during training. The history is saved as a data.table in the $train and $valid slots. The first column is always epoch.

Super class

mlr3torch::CallbackSet -> CallbackSetHistory

Methods

Public methods

• CallbackSetHistory$on_begin()

• CallbackSetHistory$state_dict()

• CallbackSetHistory$load_state_dict()

• CallbackSetHistory$on_before_valid()

• CallbackSetHistory$on_epoch_end()

• CallbackSetHistory$clone()

Inherited methods

• mlr3torch::CallbackSet$print()

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Method on_begin()

Initializes lists where the train and validation metrics are stored.

Usage

CallbackSetHistory$on_begin()

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Method state_dict()

Converts the lists to data.tables.

Usage

CallbackSetHistory$state_dict()

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Method load_state_dict()

Sets the field $train and $valid to those contained in the state dict.

Usage

CallbackSetHistory$load_state_dict(state_dict)

Arguments

state_dict

(callback_state_history)
The state dict as retrieved via $state_dict().

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Method on_before_valid()

Add the latest training scores to the history.

Usage

CallbackSetHistory$on_before_valid()

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Method on_epoch_end()

Add the latest validation scores to the history.

Usage

CallbackSetHistory$on_epoch_end()

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Method clone()

The objects of this class are cloneable with this method.

Usage

CallbackSetHistory$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.