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Train in Data

by Soledad Galli, PhD | Data scientist | Python Developer | Best-selling instructor | Book author | 👉 www.trainindata.com

Class Weights Do Not Improve Model Performance
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Class Weights Do Not Improve Model Performance

Welcome! Every Monday, I’ll drop a no-fluff, straight-to-the-point tip on a data science skill, tool, ormethod to help you stay sharp in the field. I hope you find it useful! My New Book is Out! Imbalanced Data, Myths, Mistakes and Modern Solutions Most advice about imbalanced data is incomplete, or simply wrong. This book challenges common assumptions and provides practical, evidence-based guidance for tackling class imbalance and building better machine learning models. Get the book Class...

Welcome! Every Monday, I’ll drop a no-fluff, straight-to-the-point tip on a data science skill, tool, ormethod to help you stay sharp in the field. I hope you find it useful! My New Book is Out! Imbalanced Data, Myths, Mistakes and Modern Solutions Most advice about imbalanced data is incomplete, or simply wrong. This book challenges common assumptions and provides practical, evidence-based guidance for tackling class imbalance and building better machine learning models. Find out more...

Models are not sensitive to class imbalance

Welcome! Every Monday, I’ll drop a no-fluff, straight-to-the-point tip on a data science skill, tool, ormethod to help you stay sharp in the field. I hope you find it useful! My latest eBook Imbalanced Data, Myths, Mistakes and Modern Solutions is here! Most advice about imbalanced data is incomplete, or simply wrong. This book challenges common assumptions and provides practical, evidence-based guidance for tackling class imbalance and building better machine learning models. Get your copy...

Welcome! Every Monday, I’ll drop a no-fluff, straight-to-the-point tip on a data science skill, tool, ormethod to help you stay sharp in the field. I hope you find it useful! The ROC Curve Myth for Imbalanced Datasets One myth I hear far too often is that the ROC curve is not a good metric for evaluating models trained on imbalanced datasets because it tends to produce overly optimistic ROC-AUC values. This is not true. Last Monday we saw that ROC curves are insensitive to class prevalence:...

Welcome! Every Monday, I’ll drop a no-fluff, straight-to-the-point tip on a data science skill, tool, ormethod to help you stay sharp in the field. I hope you find it useful! Just a friendly reminder to complete our survey 💙 Your feedback helps us create courses and learning resources that are more useful for our community. Thanks so much for your support! Take the survey Myth: ROC-AUC is sensitive to class imbalance Far too often, we hear that the ROC curve and ROC-AUC are unsuitable for...