Consider the following learning algorithms:

(a) Logistic regression

(b) Back propagation

(c) Linear repression

Which of the following option represents classification algorithms?

Concept:

Learning algorithms: These algorithms are used in machine learning to help technology in human learning process. It is used to process data to extract patterns appropriate for application in a new system.

Explanation:

From above given options, only a) and b) are learning algorithms.

a) Logistic regression: It is used for binary classification problems. It is used to examine and describe the relationship between a binary variable and set of predicator variables.  The primary objective of logistic regression is to model the mean of the response variables, given a set or predicator variables.

b) Back propagation: It is the essence of neural net training. It is the method of fine tuning the weights of a neural net based on the error rate obtained in the previous iteration. It is a standard method of training artificial neural networks.