# Ensemble PyTorch Documentation¶

Ensemble PyTorch is a unified ensemble framework for PyTorch to easily improve the performance and robustness of your deep learning model. It provides:

• Easy ways to improve the performance and robustness of your deep learning model.

• Easy-to-use APIs on training and evaluating the ensemble.

• High training efficiency with parallelization.

## Guidepost¶

• To get started, please refer to Quick Start;

• To learn more about ensemble methods supported, please refer to Introduction;

• If you are confused on which ensemble method to use, our experiments and the instructions in guidance may be helpful.

## Example¶

from torchensemble import VotingClassifier  # voting is a classic ensemble strategy

# Load data
train_loader = DataLoader(...)
test_loader = DataLoader(...)

# Define the ensemble
ensemble = VotingClassifier(
estimator=base_estimator,               # here is your deep learning model
n_estimators=10,                        # number of base estimators
)

# Set the optimizer
ensemble.set_optimizer(
"Adam",                                 # type of parameter optimizer
lr=learning_rate,                       # learning rate of parameter optimizer
weight_decay=weight_decay,              # weight decay of parameter optimizer
)

# Set the learning rate scheduler
ensemble.set_scheduler(
"CosineAnnealingLR",                    # type of learning rate scheduler
T_max=epochs,                           # additional arguments on the scheduler
)

# Train the ensemble
ensemble.fit(
train_loader,
epochs=epochs,                          # number of training epochs
)

# Evaluate the ensemble
acc = ensemble.predict(test_loader)         # testing accuracy


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