Your ML model is 95% accurate. It's also useless. Here's why 👇 Built a model. GotYour ML model is 95% accurate. It's also useless. Here's why 👇 Built a model. Got
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Your ML model is 95% accurate. It's also useless. Here's why 👇
Built a model. Got 95% accuracy. Celebrated.
Then checked the confusion matrix.
Out of 1000 predictions: 950 were class 0 (majority) 50 were class 1 (the ones that actually mattered)
The model learned one thing: predict class 0. Always. 95% accurate. 0% useful.
This is the accuracy trap. And it kills real ML projects.
The fix? Stop looking at accuracy. Start looking at:
F1 Score: balances precision and recall ROC-AUC: how well your model separates classes Confusion Matrix: shows exactly where it fails
I ran into this while building a fraud detection pipeline. Switching metrics changed everything.
Accuracy is a lie when your data is imbalanced.
What metric do you actually trust DM/comment me? 👇
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The network for creativity
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Creatives on Contra have earned over $150M and we are just getting started