Data Science and Machine Learning (Theory and Projects) A to Z - Overfitting, Underfitting and Generalization: Cross-val

The video tutorial introduces cross validation, a practical method for model validation in machine learning. It explains the process of partitioning data into training and test sets, and the importance of reserving test data. The tutorial covers hyperparameter tuning and the K-Fold cross validation method, which involves splitting data into K partitions to ensure each data point is used for both training and validation. The benefits of cross validation, such as increased stability and reduced risk of overfitting, are highlighted. The video concludes with a discussion on applying cross validation in machine learning using tools like sklearn.

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