User tomka

12

28

votes

3

answers

10k

views

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

Jul 7 '17 at 1:34 Vira 1

3

24

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2

answers

4k

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Mother milk of 6 Corona-positive (COVID-19) women does not contain the virus - can we make a confidence statement about this?

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Mar 20 '20 at 2:59 CJ Dennis 103

8

19

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4

answers

9k

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Does Bayes theorem hold for expectations?

bayesian mathematical-statistics

Feb 21 '17 at 2:41 Community♦ 1

8

17

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3

answers

8k

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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

9

16

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2

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19k

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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 Community♦ 1

2

12

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1

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1k

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Overdispersion and modeling alternatives in Poisson random effect models with offsets

generalized-linear-model negative-binomial-distribution glmm poisson-regression overdispersion

Jan 18 '18 at 20:06 Carl 10.7k

5

12

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2

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2k

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

hypothesis-testing chi-squared-test experiment-design proportion biostatistics

Jan 20 '14 at 20:29 Community♦ 1

2

12

votes

2

answers

3k

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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

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5

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3k

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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♦ 55.5k

2

9

votes

1

answer

749

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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 47.4k

2

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2

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644

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

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Feb 26 '17 at 0:23 jujae 143

2

9

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3

answers

3k

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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 Danica 20.6k

1

8

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1

answer

294

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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 5,634

4

8

votes

1

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9k

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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 2,463

1

7

votes

1

answer

151

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Which categorical variable encoding should I use if I want the model intercept to have the interpretation of the global mean?

mixed-model fixed-effects-model categorical-encoding

Sep 29 at 9:20 Robert Long 45.1k

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2

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2k

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

survival cox-model auc

Jul 16 at 5:36 Todd D 1,449

2

7

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1

answer

925

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Is Monte Carlo cross-validation procedure valid?

machine-learning cross-validation

Feb 27 '18 at 20:31 gung - Reinstate Monica 127k

4

7

votes

1

answer

820

views

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

r markov-chain-montecarlo metropolis-hastings

Jan 1 '18 at 7:11 Heisenberg 4,047

5

7

votes

1

answer

3k

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

bayesian markov-chain-montecarlo metropolis-hastings

Oct 26 '17 at 13:20 Xi'an 82.6k

1

6

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1

answer

701

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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♦ 26.4k

1

5

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0

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102

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Does EM algorithm require us to know the joint (predictive) distribution of the latent variables $Z$ when $Z$ is two-dimensional?

maximum-likelihood optimization expectation-maximization data-augmentation

Feb 24 '20 at 19:49 tomka 5,634

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250

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Is there a Bayesian analogue to a simultaneous confidence band?

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Nov 1 '17 at 10:44 Community♦ 1

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

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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 13.8k

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

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Mar 20 '17 at 15:23 Community♦ 1

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324

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

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Oct 10 '16 at 21:59 Joseph Santarcangelo 769

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What is the definition of “death rate” in survival analysis?

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Feb 3 '16 at 18:59 AdamO 47.4k

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Stepwise regression modeling using multiply imputed data sets

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Aug 25 '15 at 21:08 gung - Reinstate Monica 127k

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201

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

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Jan 30 '14 at 12:36 Zen 20.7k

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Which ICC estimator to use under the fixed effects model?

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Aug 29 at 15:35 Jake Westfall 11.1k

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102 Questions

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

Mother milk of 6 Corona-positive (COVID-19) women does not contain the virus - can we make a confidence statement about this?

Does Bayes theorem hold for expectations?

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

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

Overdispersion and modeling alternatives in Poisson random effect models with offsets

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

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

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

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

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

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

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

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

Which categorical variable encoding should I use if I want the model intercept to have the interpretation of the global mean?

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

Is Monte Carlo cross-validation procedure valid?

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

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

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

Does EM algorithm require us to know the joint (predictive) distribution of the latent variables $Z$ when $Z$ is two-dimensional?

Is there a Bayesian analogue to a simultaneous confidence band?

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

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

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

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

What is the definition of “death rate” in survival analysis?

Stepwise regression modeling using multiply imputed data sets

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

Which ICC estimator to use under the fixed effects model?