Recall that in lectures we showed that the Logistic Regression for binary classification boils down to...
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Recall that in lectures we showed that the Logistic Regression for binary classification boils down to solving the following optimization problem (training error) over n training samples: n T f(w) = Σlog (1 + e¯Yiw™; Xi -4:20-21) i=1 a) Compute the gradient of f(w). b) Please write the pseudocode for using GD to optimize the f(w). c) Argue that if data is linearly separable (i.e., can be perfectly classified by a linear model), in the solution obtained by GD, some of the coefficients converge to infinity. Recall that in lectures we showed that the Logistic Regression for binary classification boils down to solving the following optimization problem (training error) over n training samples: n T f(w) = Σlog (1 + e¯Yiw™; Xi -4:20-21) i=1 a) Compute the gradient of f(w). b) Please write the pseudocode for using GD to optimize the f(w). c) Argue that if data is linearly separable (i.e., can be perfectly classified by a linear model), in the solution obtained by GD, some of the coefficients converge to infinity.
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a Compute the gradient of fw The gradient of fw is dfwdw y 1 1 ewxx b Write ... View the full answer
Related Book For
Statistics The Art and Science of Learning from Data
ISBN: 978-0321755940
3rd edition
Authors: Alan Agresti, Christine A. Franklin
Posted Date:
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