Regression and Classification Machine Learning Algorithms Understanding the Differences Machine learning algorithms can be divided into two main categories: regression and classification. Regression is used when the output variable is continuous, while classification is used when the output variable is categorical. Regression Machine Learning Algorithms Regression machine learning algorithms are used to predict a continuous output variable. Some common regression algorithms include: Linear Regression: Linear regression is a simple algorithm that tries to model the relationship between the input variables and the output variable using a linear equation. It is commonly used in situations where there is a linear relationship between the input and output variables. Polynomial Regression: Polynomial regression is a variation of linear regression that can be used to model non-linear relationships between the input and output variables. It works by adding polynomial terms to the linear ...