---
title: "Discussion on \"Episode 15 — Phase 4: Class Imbalance\" | Hashnode"
description: "Discussion on \"Episode 15 — Phase 4: Class Imbalance\". Act 1 — The Problem With Getting 81% Right\nPhase 3 ended with an uncomfortable truth.\nLogistic Regression scored 81% accuracy and an ROC-AUC of 0.842. On paper, that looks good. But it was missing 44%"
url: "https://hashnode.com/posts/episode-15-phase-4-class-imbalance/69ee04163d6a492cddf96d4a"
---

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# [Episode 15 — Phase 4: Class Imbalance](https://adityand.hashnode.dev/episode-15-phase-4-class-imbalance?utm_source=hashnode&utm_medium=feed)

Act 1 — The Problem With Getting 81% Right Phase 3 ended with an uncomfortable truth. Logistic Regression scored 81% accuracy and an ROC-AUC of 0.842. On paper, that looks good. But it was missing 44%

Apr 26 · 3 min read · adityand.hashnode.dev  
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## Written by

[Aditya Dandia](https://hashnode.com/@adityand)

@adityand · Bengaluru, India

  
[View profile](https://hashnode.com/@adityand)

ML engineer in progress. Building from scratch.

A learner building ML algorithms from scratch to actually understand what's happening under the hood. Writing about the math, the mistakes, and the process and not just the results.

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