Definitions of Classification and Regression Problems in Data Science
Terms
In [Data Science](../../categories/Data Science), problems are categorized based on what the dependent variable is, as follows.
Classification Problem
A problem is termed a classification problem if the dependent variable is a qualitative variable. Specifically, if the qualitative variable’s categories are only two, it is called a binary classification.
Regression Problem
Contrastingly, if the dependent variable is a quantitative variable, the problem is referred to as a regression, originating from regression analysis. Especially, when the dependent variable is represented as a linear combination of independent variables, it is called linear regression.