Nice Question - Badge - Cross Validated

Nice Question

Question score of 10 or more. This badge can be awarded multiple times.

Awarded 10901 times.

Intuition behind strong vs weak laws of large numbers (with an R simulation)

Awarded Jun 12 at 18:20

OSK

2132 silver badges6 bronze badges

Interpretation of crossed random effect interactions in lme4

Awarded Jun 12 at 12:55

Alyssa

1011 silver badge5 bronze badges

Bayesian Justification of Cross-validation

Awarded Jun 12 at 9:43

Feri

1871 gold badge4 silver badges14 bronze badges

Why do Denoising Diffusion Probabilistic Models (DDPM) add noise according to $\sigma_t$ during sampling?

Awarded Jun 11 at 18:51

Joff

9525 silver badges23 bronze badges

Confidence int. expands much more rapidly than prediction int. as we depart from $\bar X$

Awarded Jun 11 at 17:35

Richard Hardy

68.8k13 gold badges123 silver badges274 bronze badges

Specification and interpretation of interaction terms using glm()

Awarded Jun 11 at 15:49

user1785104

1031 gold badge1 silver badge4 bronze badges

What is the utility/significance of PAC learnability and VC dimension?

Awarded Jun 9 at 11:06

syeh_106

8566 silver badges20 bronze badges

Expectation conditional on a sigma algebra, what expectation does it refer to?

Awarded Jun 8 at 13:22

Sextus Empiricus

82.8k5 gold badges114 silver badges290 bronze badges

Is parametric equivalent to linear?

Awarded Jun 7 at 15:15

Antoine

6,1978 gold badges34 silver badges56 bronze badges

If feature importance is only computed based on training set, does it mean one should never compute shap values on test set?

Awarded Jun 7 at 10:07

user1769197

1,2362 gold badges13 silver badges29 bronze badges

Time steps in Keras LSTM

Awarded Jun 6 at 0:15

Ozzah

2031 gold badge2 silver badges5 bronze badges

Whether to use original or reverse coded items in factor analysis?

Awarded Jun 5 at 16:47

Deah

1011 gold badge1 silver badge3 bronze badges

Multivariate Wasserstein metric for $n$-dimensions

Awarded Jun 4 at 2:11

kdoherty

1011 silver badge4 bronze badges

For chi-square on any 2 by X contingency table, should no more than 20% of the cells be less than 5?

Awarded Jun 3 at 20:20

Brandon Bertelsen

7,3329 gold badges42 silver badges49 bronze badges

Use of Bayesian hierarchical model

Awarded Jun 3 at 11:35

PostDocing

3,1696 gold badges35 silver badges65 bronze badges

Notation in statistics (parameter/estimator/estimate)

Awarded Jun 3 at 9:50

Martingalo

2032 silver badges5 bronze badges

For the binomial distribution, why does no unbiased estimator exist for $1/p$?

Awarded Jun 3 at 8:20

user123276

2,1071 gold badge24 silver badges39 bronze badges

Linearity assumption of linear regression

Awarded Jun 2 at 17:33

Ferdinand Mom

1777 bronze badges

How does one use Bayes theorem with a continuous prior?

Awarded Jun 1 at 12:03

Rafa

2132 silver badges7 bronze badges

Expectation of Inverse Logit of Normal Random Variable

Awarded May 31 at 14:15

Henry

1758 bronze badges

Advice on sensitivity analysis for priors in Bayesian statistics

Awarded May 30 at 10:11

user3460430

1972 silver badges11 bronze badges

Why ROC Curve on test set?

Awarded May 30 at 3:52

ntvy95

3271 gold badge3 silver badges13 bronze badges

How to arrange the multivariate DKW inequality to an upper bound on n?

Awarded May 29 at 5:50

Galen

9,5223 gold badges26 silver badges61 bronze badges

Difference between Wald test and Chi-squared test

Awarded May 29 at 1:40

unicorn

9091 gold badge9 silver badges23 bronze badges

Selecting ARIMA orders by ACF/PACF vs. by information criteria

Awarded May 28 at 20:45

Stephan Kolassa

129k21 gold badges259 silver badges490 bronze badges

Distribution of half-life from radioactive decay

Awarded May 28 at 9:57

FZS

4052 silver badges13 bronze badges

Median of the squared difference from the median of a Cauchy random variable

Awarded May 28 at 9:57

Galen

9,5223 gold badges26 silver badges61 bronze badges

Do Cohen's d and Hedges' g apply to the Welch t-test?

Awarded May 28 at 4:11

mrchimpbanana

1831 silver badge8 bronze badges

Train-validation-test split for small and unbalanced dataset?

Awarded May 28 at 0:33

Thao Nguyen

1535 bronze badges

Understanding the Behrens–Fisher problem

Awarded May 27 at 13:21

Michael Hardy

10.7k1 gold badge33 silver badges56 bronze badges

Altiplano distribution---Distributions very flat around the center?

Awarded May 27 at 3:49

kjetil b halvorsen♦

81.7k32 gold badges199 silver badges654 bronze badges

Alternatives to the null hypothesis significance testing framework

Awarded May 26 at 9:56

fool

2,4901 gold badge13 silver badges29 bronze badges

UMVUE for normal distribution $\sigma$

Awarded May 25 at 21:11

clarkson

1,2533 gold badges18 silver badges25 bronze badges

Parsimonious Mixed Models

Awarded May 25 at 9:32

Chloe

3732 silver badges7 bronze badges

Is Glorot/He-style variance-preserving *regularization* a known thing?

Awarded May 25 at 0:21

yuri kilochek

4071 silver badge8 bronze badges

Where in the ROC curve does it tell you what the threshold is?

Awarded May 24 at 15:06

Katsu

1,0215 silver badges21 bronze badges

Is there a standard way for training neural networks with negative-labeled data?

Awarded May 24 at 13:05

Martin Thoma

1,7571 gold badge18 silver badges36 bronze badges

Multiple logistic regression power analysis

Awarded May 23 at 23:10

lukeg

4312 gold badges6 silver badges17 bronze badges

Weights argument in lm and lme very different in R- am I using them correctly?

Awarded May 23 at 22:41

colin

1,2421 gold badge14 silver badges33 bronze badges

Difference between a Student-T vs Cauchy distribution

Awarded May 23 at 14:26

SARose

3151 gold badge3 silver badges9 bronze badges

Upper bound for 1-Wasserstein distance between standard uniform and other distribution on $[0,1]$

Awarded May 23 at 9:46

spencergw

3511 silver badge7 bronze badges

Is it possible to perform a regression where you have an unknown / unknowable feature variable?

Awarded May 23 at 1:57

SomeRandomPhysicist

2351 silver badge10 bronze badges

Why are Pearson's residuals from a negative binomial regression smaller than those from a poisson regression?

Awarded May 22 at 20:55

luciano

14.5k36 gold badges97 silver badges128 bronze badges

Does the conditional expectation operator have an interpretable decomposition like the projection matrix does in linear algebra?

Awarded May 22 at 9:56

absolutelyzeroEQ

1114 bronze badges

Unbiased estimators of skewness and kurtosis

Awarded May 21 at 16:20

SiXUlm

4531 gold badge5 silver badges13 bronze badges

Logistic regression: class probabilities

Awarded May 21 at 11:02

Klausos Klausos

3051 gold badge6 silver badges12 bronze badges

Prove that $t_{n-1, \alpha/2}$ is strictly decreasing in $n$

Awarded May 20 at 12:42

Ben

130k7 gold badges247 silver badges573 bronze badges

How to know the sample arithmetic mean and standard deviation if I know the mean and the deviation of the logarithm of the observations

Awarded May 19 at 9:56

Luly Ch

1033 bronze badges

Cubic splines in Cox model

Awarded May 19 at 0:56

user99751

2091 silver badge5 bronze badges

Linear regression model that suits best for data with errors

Awarded May 19 at 0:02

user46178

1014 bronze badges

SVD of a data matrix after an orthogonal projection to a subspace

Awarded May 17 at 19:31

mobeets

2411 silver badge12 bronze badges

Why is there little difference in glm fit using poisson and gaussian family for Poisson data?

Awarded May 17 at 18:08

Mikhail

1134 bronze badges

Is there formal test of non-linearity in linear regression?

Awarded May 17 at 14:07

user54285

1,0796 silver badges12 bronze badges

How many times to repeat an event with known probability before it has occurred a number of times

Awarded May 16 at 18:05

Dylan

1091 gold badge1 silver badge3 bronze badges

Why do physicists use sigma while biologists use p values/posterior probabilities?

Awarded May 16 at 14:12

User65535

2311 silver badge5 bronze badges

Why use a scoring rule different from the loss function?

Awarded May 16 at 11:17

Igor F.

9,4681 gold badge29 silver badges63 bronze badges

Are these valid histograms?

Awarded May 16 at 9:03

Michael Liu

1034 bronze badges

When should one use a Tweedie GLM over a Zero-Inflated GLM?

Awarded May 15 at 2:25

geoscience123

5852 silver badges14 bronze badges

Does it make sense to do PCA before a Tree-Boosting model?

Awarded May 12 at 20:22

Gulzar

5831 gold badge4 silver badges18 bronze badges

Posterior predictive distribution vs MAP estimate

Awarded May 11 at 17:32

usual me

1,2572 gold badges10 silver badges18 bronze badges

Prev 1 2

4 5

…

182 Next