When machine learning models (not just SVM) are implemented using the train command of the caret package, tuning of the model is accomplished on a built-in basis.

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Quizplus · Accepted Answer

The train command of the caret package allows for tuning of machine learning models based on built-in defaults and user-specified parameters. This allows for the selection of optimal hyperparameters for the model being trained.

When Machine Learning Models (Not Just SVM) Are Implemented Using