MLJourney
Day 8
Week 2

Logistic Regression

Overview

Logistic Regression is a statistical method for analyzing a dataset in which there are one or more independent variables that determine an outcome. The outcome is measured with a dichotomous variable (in which there are only two possible outcomes).

In machine learning, logistic regression is a classification algorithm used to predict a categorical dependent variable. It's one of the most popular algorithms for binary classification problems.

Key Concepts
  • Logistic function (sigmoid) and its properties
  • Decision boundary in logistic regression
  • Maximum likelihood estimation
  • Interpreting logistic regression coefficients
  • Evaluating logistic regression models (accuracy, precision, recall, F1-score)
Practice Exercise

Exercise: Titanic Survival Prediction

Using the Titanic dataset, build a logistic regression model to predict passenger survival.

  1. Load the Titanic dataset
  2. Perform exploratory data analysis
  3. Handle missing values and categorical features
  4. Build a logistic regression model
  5. Evaluate the model using appropriate metrics
  6. Interpret the coefficients of your model
Resources

StatQuest: Logistic Regression

Main resource for today

Scikit-learn Documentation

Official documentation for LogisticRegression

Towards Data Science

Logistic Regression for Machine Learning

Khan Academy

Introduction to logistic regression

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