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tomka
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regression

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86 Questions

Views Newest Activity Votes
10
25
votes
3
answers
7k
views

LASSO with interaction terms - is it okay if main effects are shrunk to zero?

machine-learning lasso glmnet shrinkage penalized
Jul 7 '17 at 1:34 Vira 1
8
18
votes
4
answers
6k
views

Does Bayes theorem hold for expectations?

bayesian mathematical-statistics
Feb 21 '17 at 2:41 Community♦ 1
10
16
votes
2
answers
17k
views

Why is the standard deviation defined as sqrt of the variance and not as the sqrt of sum of squares over N?

variance standard-deviation intuition teaching
Nov 8 '17 at 14:11 kjetil b halvorsen 39.5k
7
16
votes
3
answers
6k
views

What is the relationship between the Beta distribution and the logistic regression model?

regression logistic mathematical-statistics beta-distribution
Jan 31 '17 at 20:42 Community♦ 1
2
12
votes
1
answer
1k
views

Overdispersion and modeling alternatives in Poisson random effect models with offsets

generalized-linear-model negative-binomial glmm poisson-regression overdispersion
Jan 18 '18 at 20:06 Carl 9,157
5
12
votes
2
answers
2k
views

The $z$-test vs the $\chi^2$-test for comparing the odds of catching a cold in 2 groups

hypothesis-testing chi-squared experiment-design proportion biostatistics
Jan 20 '14 at 20:29 Community♦ 1
2
12
votes
2
answers
2k
views

How can I pool bootstrapped p-values across multiply imputed data sets?

confidence-interval variance p-value bootstrap multiple-imputation
Dec 20 '13 at 16:13 Community♦ 1
2
9
votes
1
answer
597
views

Why is the Bayesian credible interval in this polynomial regression biased whereas the confidence interval is correct?

regression logistic bayesian confidence-interval credible-interval
Sep 29 '17 at 20:51 AdamO 41.3k
2
9
votes
2
answers
370
views

What is the best way to estimate the average treatment effect in a longitudinal study?

mixed-model panel-data multilevel-analysis random-effects-model fixed-effects-model
Feb 26 '17 at 0:23 jujae 143
5
8
votes
1
answer
579
views

Which adaptive Metropolis Hastings algorithm is implemented in R package MHadaptive?

r mcmc metropolis-hastings
Jan 1 '18 at 7:11 Heisenberg 3,533
1
8
votes
5
answers
2k
views

What is the relationship between $p$ values and Type I errors [duplicate]

p-value type-i-and-ii-errors
Nov 9 '17 at 14:03 kjetil b halvorsen 39.5k
1
8
votes
1
answer
160
views

In propensity score analysis, what are options to deal with very small or large propensities?

missing-data causality propensity-scores survey-weights
Nov 24 '16 at 15:30 tomka 5,016
1
7
votes
1
answer
509
views

Is Monte Carlo cross-validation procedure valid?

machine-learning cross-validation
Feb 27 '18 at 20:31 gung - Reinstate Monica♦ 116k
3
7
votes
1
answer
7k
views

Model selection: can I compare the AIC from models of count data between linear and poisson models?

generalized-linear-model model-selection aic glmm
Feb 25 '15 at 14:56 robin.datadrivers 2,273
4
6
votes
1
answer
1k
views

What is a good proposal distribution for Metropolis-Hastings for strictly positive parameters?

bayesian mcmc metropolis-hastings
Oct 26 '17 at 13:20 Xi'an 66.4k
 
6
votes
3
answers
2k
views

Is the Gaussian Kernel still a valid Kernel when taking the negative of the inner function?

machine-learning svm kernel-trick gaussian-process
Oct 27 '16 at 0:02 Dougal 18.2k
1
6
votes
1
answer
485
views

How should I evaluate the expectation of the ratio of two random variables?

mathematical-statistics ratio
Oct 22 '14 at 12:34 Scortchi - Reinstate Monica♦ 24.6k
2
5
votes
1
answer
68
views

What is the relationship between the Harrel's C and the AUC?

survival cox-model auc
Nov 25 at 15:25 rep_ho 3,497
 
5
votes
1
answer
182
views

Is there a Bayesian analogue to a simultaneous confidence band?

bayesian confidence-interval credible-interval
Nov 1 '17 at 10:44 tomka 5,016
2
5
votes
1
answer
623
views

How to make correct predictions of probabilities and their uncertainty in Bayesian logistic regression?

logistic bayesian predictive-models posterior prediction-interval
Sep 29 '17 at 13:48 jbowman 26.9k
 
5
votes
1
answer
1k
views

How is the optimal probability cut-off in a ROC defined by the R package Epi?

r classification roc auc
Jul 12 '17 at 13:18 Firebug 9,556
1
5
votes
1
answer
1k
views

How can I obtain prediction intervals for survival prediction in the Cox model?

survival prediction cox-model proportional-hazards
Mar 20 '17 at 15:23 Community♦ 1
 
5
votes
1
answer
202
views

What are the primary advantages of using Kernels in predicting continuous outcomes?

machine-learning svm kernel-trick
Oct 10 '16 at 21:59 Joseph Santarcangelo 741
1
5
votes
3
answers
2k
views

Stepwise regression modeling using multiply imputed data sets

regression data-imputation multiple-imputation stepwise-regression mice
Aug 25 '15 at 21:08 gung - Reinstate Monica♦ 116k
 
5
votes
1
answer
155
views

Is this statement about the conditional expectation of a sum true?

distributions random-variable conditional-expectation
Jan 30 '14 at 12:36 Zen 18.8k
 
4
votes
2
answers
414
views

Question about deriving posterior distribution from normal prior and likelihood

self-study bayesian mathematical-statistics
Oct 5 '18 at 13:41 gung - Reinstate Monica♦ 116k
1
4
votes
1
answer
199
views

How to implement the sandwich estimator in a semi-parametric situation?

variance estimation optimization sandwich m-estimation
Nov 4 '16 at 23:00 Nick 199
2
4
votes
2
answers
2k
views

How to derive the MLE of a Gaussian mixture distribution

self-study maximum-likelihood expectation-maximization gaussian-mixture mixture
Sep 20 '16 at 4:22 Xi'an 66.4k
1
4
votes
2
answers
4k
views

Covariance of two sample means

self-study mathematical-statistics
Jul 28 '15 at 20:39 Dilip Sarwate 33.5k
 
4
votes
1
answer
66
views

Testing whether error variances of two regression models are equal

regression error
Feb 25 '14 at 22:44 Eric Brady 688
1 2 3 next
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