Description: A validation set is a subset of data used to evaluate the performance of a model during the training process. This set is crucial to ensure that the model not only fits the training data but also generalizes well to unseen data. By separating a portion of the original data for validation, one can measure the model’s ability to make accurate predictions and avoid overfitting, which occurs when a model becomes too tailored to the training data and loses its generalization capability. In the context of machine learning, validation sets allow for the evaluation of model effectiveness in various tasks. Proper selection of a validation set is essential, as it should be representative of the problem domain and contain varied examples that reflect the diversity of the data. This ensures that the performance metrics obtained are reliable and useful for the continuous improvement of the model.
