random variable related issues & queries in StatsXchanger

Best way to seed N independent random number generators from 1 value

python monte-carlo random-generation numpy
Updated February 22, 2019 00:19 AM

Approaches to reduce dimensions (feature selection/extraction) with high dimensional count data before running tree based model

machine-learning pca random-forest dimensionality-reduction xgboost
Updated February 21, 2019 23:19 PM

With lme4, is it possible to weight group-level random effects by similarity?

mixed-model categorical-data lme4-nlme random-effects-model pooling
Updated February 21, 2019 20:19 PM

Wilcoxon Test with Random Effect

mixed-model random-effects-model wilcoxon-mann-whitney
Updated February 21, 2019 17:19 PM

Model building, how to include information on data point quality?

mixed-model random-variable gam reliability
Updated February 21, 2019 15:19 PM

How to specify permutation test (randomization inference) for difference-in-differences?

permutation-test difference-in-difference clustered-standard-errors random-allocation
Updated February 21, 2019 10:19 AM

Average time for a random walk on the edges of a cube

probability random-walk
Updated February 20, 2019 21:19 PM

How to find the distance confidence between the sum of random variables and a given target value?

machine-learning random-variable stochastic-processes random-generation
Updated February 20, 2019 21:19 PM

Random effect vs. fixed effect with a huge amount of dummies

random-forest
Updated February 20, 2019 20:19 PM

Asking opinion about random forests, chi squared and data permutation

chi-squared random-forest permutation-test
Updated February 20, 2019 18:19 PM

Estimates radically change when including Random Slopes in Multiple Logistic Regression

logistic mixed-model repeated-measures random-effects-model
Updated February 20, 2019 16:19 PM

Permutations, shuffling WITHIN but not BETWEEN groups

r random-generation permutation-test
Updated February 20, 2019 12:19 PM

How can I map a Gaussian vector according to an equation that has a spatial autocorrelation function?

autocorrelation random-generation
Updated February 20, 2019 11:19 AM

Are direct effects between latent variable indicators ever appropriate?

sem latent-variable mplus longitudinal-data-analysis
Updated February 20, 2019 04:19 AM

Mixed logit random parameters for non-alternative-specific variables

mixed-model econometrics random-effects-model mlogit
Updated February 19, 2019 21:19 PM

A random variable with a step function CDF is discrete?

probability distributions random-variable
Updated February 19, 2019 19:19 PM

Are the same number of trees required while comparing Random Forest to GBM?

r random-forest boosting
Updated February 19, 2019 17:19 PM

Are the same number of trees required to compare Random Forest against GBM?

r machine-learning random-forest boosting
Updated February 19, 2019 17:19 PM

Central limit theorem doubt

normal-distribution random-variable central-limit-theorem
Updated February 19, 2019 17:19 PM

Help with PCA Question

self-study pca factor-analysis latent-variable marginal
Updated February 19, 2019 13:19 PM

Is non-central chi-square distribution sub-exponential

random-variable
Updated February 19, 2019 04:19 AM

Compare using `lme4` and `nlme` for mixed effects models

r mixed-model random-effects-model fixed-effects-model
Updated February 19, 2019 04:19 AM

Random walks-heavy tailed case

stochastic-processes random-walk
Updated February 18, 2019 11:19 AM

'random intercept only', 'random slope only' and 'random intercept and slope' models

random-effects-model
Updated February 17, 2019 14:19 PM

Sum of Discrete Random Variables

random-variable
Updated February 17, 2019 13:19 PM

What dose it mean for the model to return MTRY = 111?

r machine-learning random-forest caret
Updated February 17, 2019 08:19 AM

Distribution of a square of a random variable

distributions mathematical-statistics random-variable
Updated February 16, 2019 23:19 PM

Changes in significance and effect size (though constant SEs) when controlling for a categorical variable. Correlation test & interpretation?

correlation anova interpretation logit controlling-for-a-variable
Updated February 16, 2019 19:19 PM

Is sketching a method for dimensionality reduction and its relation to random projection

data-transformation dimensionality-reduction linear-algebra high-dimensional random-projection
Updated February 16, 2019 19:19 PM

What is a variable selection and especially a "model-free" variable selection

model variable
Updated February 16, 2019 13:19 PM

add constraints to random forest

regression machine-learning neural-networks clustering random-forest
Updated February 16, 2019 06:19 AM

Coding a BEKK mutlivaraite GARCH model

multivariate-analysis random-variable garch
Updated February 15, 2019 11:19 AM

Simplex Random Walk Mean

probability lognormal metropolis-hastings random-walk
Updated February 15, 2019 10:19 AM

Adding Bad Events from the past to the risk default model to avoid Down/Up sampling techniques

logistic sampling random-forest resampling credit-scoring
Updated February 14, 2019 16:19 PM

New factor levels in testing data set not present in training data in h20.randomforest

r machine-learning random-forest h2o
Updated February 14, 2019 16:19 PM

joint PMF in a class of n students

probability random-variable joint-distribution
Updated February 14, 2019 06:19 AM

PMF and independence with two discrete random variables?

probability random-variable expected-value pdf joint-distribution
Updated February 14, 2019 06:19 AM

How to include covariates in a nested model?

r regression multiple-regression mixed-model random-effects-model
Updated February 14, 2019 01:19 AM

Distribution of the $L^{2}$ norm of a vector of components drawn from Gaussian distributions

probability distributions normal-distribution random-vector
Updated February 13, 2019 21:19 PM

How to put list of unordered elements as features into a random forest model

feature-selection random-forest
Updated February 13, 2019 21:19 PM

Can standardized variable be used to generalize sample results to whole population?

correlation standardization dependent-variable
Updated February 13, 2019 15:19 PM

Interpreting BLUPs or VarCorr estimates in mixed models?

mixed-model estimation random-effects-model blup
Updated February 13, 2019 13:19 PM

Conditional expectation function

random-variable conditional-expectation
Updated February 12, 2019 19:19 PM

$L_2$ norm of product of two vectors

machine-learning standardization distance euclidean random-vector
Updated February 12, 2019 17:19 PM

User-Specific Activity Level Along Weeks

machine-learning clustering descriptive-statistics random-walk
Updated February 12, 2019 09:19 AM

"Hierarchical" Random forests?

r machine-learning random-forest cart
Updated February 12, 2019 09:19 AM

GAMM with multiple and crossed random effects

random-effects-model gamm4
Updated February 11, 2019 21:19 PM

Test for equality of means for vector-valued random process with different variances

hypothesis-testing random-vector
Updated February 11, 2019 20:19 PM

Quantiles of transformed series

forecasting random-variable prediction-interval
Updated February 11, 2019 15:19 PM

How to fit a longitudinal GAM mixed model (GAMM)

r mixed-model random-effects-model fixed-effects-model gam
Updated February 11, 2019 13:19 PM

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