FAQ: Logistic Regression - Introduction

This community-built FAQ covers the “Introduction” exercise from the lesson “Logistic Regression”.

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Machine Learning

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Why use logistic regression when simple classification could work? For example, logistic regression is used with identification of spam emails. Why not just use KNearestNeighbors to do this? What’s the benefit of logistic regression?

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I assume the point is introduction of different approaches and algorithms, and at the end, the selection is up to the person to decide based on performance of the model on a specific case. Therefore, for one specific case you might end up using linear regression, and for another case, you’ll use logistic regression or KNN.

Beware: I’m still learning and my answer could be wrong. If so, please feel free to correct me.