What is Logistic Regression? Types of Logistic Regression

In Previous topic we came across the first most machine learning algorithm which is Linear Regression. Now it's learn about one of the linear algorithm in this section. Logistic Regression is used to solve the classification problems, so it's called as Classification Algorithm that models the probability of output class. Consider a scenario where we need to classify whether a patient has diabetes or not. If we use linear regression for this problem, there is a need for setting up a threshold based on which classification can be done.