Description: Validation Set X is a crucial part of the training process for neural network models. It refers to a subset of data used to evaluate the performance of a model that has been previously trained using a training dataset. The main function of the validation set is to provide an impartial and objective assessment of the model, allowing researchers and developers to identify whether the model is overfitting or underfitting the training data. Unlike the training set, which is used to teach the model to recognize patterns, the validation set acts as a means to measure the model’s ability to generalize to unseen data. This is fundamental in developing robust and effective models, as it helps to tune hyperparameters and make informed decisions about the model architecture. In summary, the validation set is essential to ensure that a neural network model not only learns from the training data but can also effectively apply that learning to new data.