Episode 9. Continuing our series run about model validation. In this episode, the hosts focus on aspects of performance, why we need to do statistics correctly, and not use metrics without understanding how they work, to ensure that models are evaluated in a meaningful way. AI regulations, red team testing, and physics-based modeling. 0:03The hosts discuss the Biden administration's executive order on AI and its implications for model validation and performance.Evaluating machine learning models using accuracy, recall, and precision. 6:52The four types of results in classification: true positive, false positive, true negative, and false negative.The three standard metrics are composed of these elements: accuracy, recall, and precision.Accuracy metrics for classification models. 12:36Precision and recall are interrelated aspects of accuracy in machine learning.Using F1 score and F beta score in classification models, particularly when dealing with imbalanced data.Performance metrics for regression tasks. 17:08Handling imbalanced outcomes in machine learning, particularly in regression tasks.The different metrics used to evaluate regression models, including mean squared error.Performance metrics for machine learning models. 19:56Mean squared error (MSE) as a metric for evaluating the accuracy of machine learning models, using the example of predicting house prices.Mean absolute error (MAE) as an alternative metric, which penalizes large errors less heavily and is more straightforward to compute.Graph theory and operations research applications. 25:48Graph theory in machine learning, including the shortest path problem and clustering. Euclidean distance is a popular benchmark for measuring distances between data points. Machine learning metrics and evaluation methods. 33:06Model validation using statistics and information theory. 37:08Entropy, its roots in classical mechanics and thermodynamics, and its application in information theory, particularly Shannon entropy calculation. The importance the use case and validation metrics for machine learning models.Do you have a question or a discussion topic for the AI Fundamentalists? Connect with them to comment on your favorite topics: LinkedIn - Episode summaries, shares of cited articles, and more. YouTube - Was it something that we said? Good. Share your favorite quotes. [email protected] - Keep those questions coming! They inspire future episodes.