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| bio | website | emakalic.org/blog |
|---|---|---|
| location | Melbourne, Australia | |
| age | ||
| visits | member for | 2 years, 10 months |
| seen | May 24 '12 at 1:32 | |
| stats | profile views | 59 |
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Mar 2 |
awarded | Taxonomist |
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Jul 28 |
awarded | Yearling |
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Nov 21 |
comment |
Estimating kappa of von Mises distribution May also want to check out Bayesian Estimation Of The von Mises Concentration Parameter |
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Jul 29 |
awarded | Yearling |
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Apr 13 |
awarded | Commentator |
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Apr 13 |
comment |
Regularized fit from summarized data: choosing the parameter You may find the following paper useful: Golub, G. H.; Heath, M. & Wahba, G. Generalized Cross-Validation as a Method for Choosing a Good Ridge Parameter. Technometrics, 1979, 21, 215-223. The criterion introduced by Golub et al. does not require any re-sampling. |
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Apr 4 |
comment |
AIC or p-value: which one to choose for model selection? If your goal is prediction accuracy, you want to use AIC (as it minimises the expected KL divergence between the fitted model and the truth). If you want a consistent model selection procedure (fixed p, growing n), you may use, say, BIC instead. Using p-values in stepwise regression to select hypotheses is definitelly not recommended. |
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Apr 3 |
comment |
Fisher information in a hierarchical model A lower bound for the Fisher information in this case is $1/(1+2c^2)$. Is it possible to get a tighter uppper bound on the Fisher information than the general $1 + 1/c^2$? |
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Mar 28 |
awarded | Student |
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Mar 28 |
asked | Fisher information in a hierarchical model |
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Mar 19 |
awarded | Nice Answer |
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Mar 8 |
comment |
How to generate uniformly distributed points on the surface of the 3-d unit sphere? I dont have the paper on me, but this page seems to describe the algorithm (and several others) mlahanas.de/Math/nsphere.htm |
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Mar 8 |
answered | How to generate uniformly distributed points on the surface of the 3-d unit sphere? |
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Feb 22 |
comment |
Can the standard deviation be calculated for harmonic mean? The paper "Inverted Distributions" by E. L. Lehmann and Juliet Popper Shaffer is an interesting read regarding distributions of inverted random variables. |
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Feb 22 |
awarded | Editor |
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Feb 22 |
revised |
Can the standard deviation be calculated for harmonic mean? fixed latex math display |
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Feb 21 |
answered | Can the standard deviation be calculated for harmonic mean? |
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Dec 16 |
comment |
Testing if a coin is fair I suggest you have a look at "L. D. Brown, T. T. Cai and A. DasGupta, Interval Estimation for a Binomial Proportion, Statistical Science, Vol. 16, pp. 101-117, 2001". It includes a very nice discussion of interval estimation for the Binomial distribution. |
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Nov 29 |
comment |
Lasso fitting by coordinate descent: open-source implementations? I only have an implementation of the Bayesian LASSO for linear regression and the LASSO for logistic regression currently uploaded. Appologies. |
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Nov 29 |
answered | Lasso fitting by coordinate descent: open-source implementations? |
