Consider the following learning algorithms: (a) Logistic repression (b) Back…

2019

Consider the following learning algorithms:

(a) Logistic repression

(b) Back propogation

(c) Linear repression

Which of the following option represents classification algorithms?

  1. A.

    (a) and (b) only

  2. B.

    (a) and (c) only

  3. C.

    (b) and (c) only

  4. D.

    (a), (b) and (c) 

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Correct answer: A

Answer: Logistic regression and backpropagation.

Why:

  • Logistic regression: a supervised classification algorithm used to predict discrete class labels (commonly binary), modeling class probabilities.

  • Backpropagation: an optimization/training algorithm for neural networks; neural networks trained via backpropagation are commonly applied to classification tasks, so backpropagation is associated with building classifiers.

  • Linear regression: a regression algorithm that predicts continuous numeric values and is not a classification method.

Conclusion: The algorithms related to classification in the list are logistic regression and backpropagation (used to train classifiers). Linear regression is for continuous outputs and should not be counted as a classification algorithm.

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