Logistic Regression#
Logistic regression is a widely used discriminative classification model \(\mathbb{P}(y \mid \boldsymbol{x} ; \boldsymbol{\theta})\), where \(\boldsymbol{x} \in \mathbb{R}^D\) is a fixed-dimensional input vector, \(y \in\{1, \ldots, K\}\) is the class label, and \(\boldsymbol{\theta}\) are the parameters. If \(K=2\), this is known as binary logistic regression, and if \(K>2\), it is known as multinomial logistic regression, or alternatively, multiclass logistic regression [Murphy, 2022].
Further Readings#
Murphy, Kevin P. “Chapter .” In Probabilistic Machine Learning: An Introduction. MIT Press, 2022.
James, Gareth, Daniela Witten, Trevor Hastie, and Robert Tibshirani. “Chapter .” In An Introduction to Statistical Learning: With Applications in R. Boston: Springer, 2022.
Jung, Alexander. “Chapter ” In Machine Learning: The Basics. Singapore: Springer Nature Singapore, 2023.
Bishop, Christopher M. “Chapter .” In Pattern Recognition and Machine Learning. New York: Springer-Verlag, 2016.
Hal Daumé III. “Chapter .” In A Course in Machine Learning, January 2017.