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Néstor

PhD Student in Astrophysics from PUC, Chile, working in the area of astrostatistics applied to exoplanet detection and characterization and in the area of variable stars. More info about me in my personal webpage here.

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Top posts (60) All Questions Answers | Votes Newest

27 Reversing PCA back to the original variables Aug 20 '12
23 Advantages of doing “double lasso” or performing lasso twice? Sep 26 '12
21 Why is chi square used when creating a confidence interval for the variance? Nov 13 '13
17 Implementing ridge regression: Selecting an intelligent grid for $\lambda$? Jul 13 '12
17 Probability density function between -1 and 1? Jul 10 '12
13 AR(1) process with heteroscedastic measurement errors Aug 17 '13
11 Ridge and LASSO given a covariance structure? Jul 20 '12
11 Is there a difference between the “maximum probability” and the “mode” of a parameter? Apr 17 '12
10 Acceptance ratio in Metropolis–Hastings algorithm May 7 '12
10 “Central limit theorem” for weighted sum of correlated random variables Aug 13 '12
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