R: Mining Spatial, Text, Web, and Social Media Data

Logistic regression

The linear regression model based on the ordinary least square method assumes that the relationship between the dependent variable and the independent variables is linear; however, the logistic regression model assumes the relationship to be logarithmic. There are many real-life scenarios where the variable of interest is categorical in nature, such as buying a product or not, approving a credit card or not, tumor is cancerous or not, and so on. Logistic regression not only predicts a dependent variable class but it predicts the probability of a case belonging to a level in the dependent variable. The independent variables need not be normally distributed and need not have equal variance. Logistic regression belongs to the ...