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jld

Data scientist in the DC area.

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Top posts (210) All Questions Answers | Votes Newest

51 When is a biased estimator preferable to unbiased one? Apr 17 '16
37 Understanding t-test for linear regression May 2 '18
36 Why is ridge regression called “ridge”, why is it needed, and what happens when $\lambda$ goes to infinity? May 7 '15
35 Why is the cost function of neural networks non-convex? May 23 '17
31 Is probability theory the study of non-negative functions that integrate/sum to one? Mar 14 '18
29 What did my neural network just learn? What features does it care about and why? Jan 11 '18
28 Optimization and Machine Learning Jun 18 '17
26 Why do we use PCA to speed up learning algorithms when we could just reduce the number of features? Mar 20 '17
26 Does it make sense to use Logistic regression with binary outcome and predictor? Mar 13 '18
26 Why using Newton's method for logistic regression optimization is called iterative re-weighted least squares? May 5 '18
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