Cross Validated

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Accepted answer and score of 40 or more. This badge can be awarded multiple times.
Awarded 822 times.
Is there any theory or field of study that concerns itself with modeling causation rather than correlation?
Awarded Mar 17 at 15:32
How to create an arbitrary covariance matrix
Awarded Mar 14 at 12:47
In a Poisson model, what is the difference between using time as a covariate or an offset?
Awarded Mar 2 at 8:57
Different covariance types for Gaussian Mixture Models
Awarded Feb 26 at 22:12
Difference Between ANOVA and Kruskal-Wallis test
Awarded Feb 16 at 12:00
What is the definition of Top-n accuracy?
Awarded Feb 14 at 9:04
Maximum likelihood estimators for a truncated distribution
Awarded Feb 13 at 18:55
Gradient of Hinge loss
Awarded Feb 7 at 11:57
How does negative sampling work in word2vec?
Awarded Feb 1 at 6:21
Statistical test to tell whether two samples are pulled from the same population?
Awarded Feb 1 at 2:11
Clustering methods that do not require pre-specifying the number of clusters
Awarded Jan 31 at 23:21
Does random forest need input variables to be scaled or centered?
Awarded Jan 26 at 15:07
Is hour of day a categorical variable?
Awarded Jan 24 at 19:08
Do all interactions terms need their individual terms in regression model?
Awarded Jan 18 at 11:25
Understanding input_shape parameter in LSTM with Keras
Awarded Jan 17 at 23:03
How to perform isometric log-ratio transformation
Awarded Jan 17 at 19:09
Is Kernel PCA with linear kernel equivalent to standard PCA?
Awarded Jan 4 at 9:06
What are 'aliased coefficients'?
Awarded Dec 22, 2022 at 12:28
What is the difference between something being "true" and 'true with probability 1"?
Awarded Dec 15, 2022 at 8:15
Bayesian vs frequentist Interpretations of Probability
Awarded Dec 13, 2022 at 23:40
Regression with multiple dependent variables?
Awarded Dec 13, 2022 at 18:09
Imputation before or after splitting into train and test?
Awarded Dec 9, 2022 at 14:03
Why is Lasso penalty equivalent to the double exponential (Laplace) prior?
Awarded Nov 30, 2022 at 5:05
Is the t-test miscalibrated in R?
Awarded Nov 13, 2022 at 4:11
Why is tanh almost always better than sigmoid as an activation function?
Awarded Nov 12, 2022 at 11:06
Adaptive GAM smooths in mgcv
Awarded Nov 10, 2022 at 22:25
What is the difference between convolutional neural networks and deep learning?
Awarded Nov 6, 2022 at 19:34
Variance of a function of one random variable
Awarded Nov 1, 2022 at 15:20
Why is a T distribution used for hypothesis testing a linear regression coefficient?
Awarded Nov 1, 2022 at 5:41
Why are the weights of RNN/LSTM networks shared across time?
Awarded Oct 27, 2022 at 16:27
Correlations between continuous and categorical (nominal) variables
Awarded Oct 25, 2022 at 13:41
How to represent an unbounded variable as number between 0 and 1
Awarded Oct 25, 2022 at 1:10
Why are regression problems called "regression" problems?
Awarded Sep 30, 2022 at 18:41
What does a non positive definite covariance matrix tell me about my data?
Awarded Sep 29, 2022 at 6:07
Latent Class Analysis vs. Cluster Analysis - differences in inferences?
Awarded Sep 29, 2022 at 5:31
Is a model fitted to data or is data fitted to a model?
Awarded Sep 28, 2022 at 21:40
What is the distribution of $R^2$ in linear regression under the null hypothesis? Why is its mode not at zero when $k>3$?
Awarded Sep 27, 2022 at 16:41
Variance of product of dependent variables
Awarded Sep 26, 2022 at 19:42
What is the "capacity" of a machine learning model?
Awarded Sep 12, 2022 at 21:56
What are disadvantages of using the lasso for variable selection for regression?
Awarded Sep 12, 2022 at 16:11
What exactly is a seed in a random number generator?
Awarded Sep 10, 2022 at 11:25
Regression in $p>n$ setting: how to choose regularization method (Lasso, PLS, PCR, ridge)?
Awarded Sep 6, 2022 at 1:16
Understanding complete separation for logistic regression
Awarded Aug 27, 2022 at 11:26
In survival analysis, why do we use semi-parametric models (Cox proportional hazards) instead of fully parametric models?
Awarded Aug 23, 2022 at 20:32
Mixed Effects Model with Nesting
Awarded Jul 31, 2022 at 22:55
Weighted principal components analysis
Awarded Jul 14, 2022 at 11:18
Why is the sum of two random variables a convolution?
Awarded Jul 11, 2022 at 21:10
What is a latent space?
Awarded Jul 10, 2022 at 12:11
How exactly is the "effectiveness" in the Moderna and Pfizer vaccine trials estimated?
Awarded Jul 7, 2022 at 14:42
Why law of large numbers does not apply in the case of Apple share price?
Awarded Jul 6, 2022 at 16:07
Difference between Random Forests and Decision tree
Awarded Jul 4, 2022 at 19:18
Logistic regression model does not converge
Awarded Jul 4, 2022 at 17:07
10-fold Cross-validation vs leave-one-out cross-validation
Awarded Jun 25, 2022 at 20:48
How to whiten the data using principal component analysis?
Awarded Jun 21, 2022 at 18:42
Why is mean squared error the cross-entropy between the empirical distribution and a Gaussian model?
Awarded Jun 20, 2022 at 10:40
How to sample from a normal distribution with known mean and variance using a conventional programming language?
Awarded Jun 19, 2022 at 14:06
What does having "constant variance" in a linear regression model mean?
Awarded Jun 17, 2022 at 17:20
Why is XOR not linearly separable?
Awarded Jun 16, 2022 at 20:51
What is the difference between errors and residuals?
Awarded Jun 12, 2022 at 7:51
What is the reason the log transformation is used with right-skewed distributions?
Awarded Jun 9, 2022 at 6:26
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