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KevinKim
  • Member for 9 years, 4 months
  • Last seen more than a month ago
  • USA
444 votes
5 answers
176k views

How to understand the drawbacks of K-means

29 votes
2 answers
6k views

How well does bootstrapping approximate the sampling distribution of an estimator?

27 votes
6 answers
33k views

Why do we usually choose to minimize the sum of square errors (SSE) when fitting a model?

10 votes
1 answer
2k views

Does EM algorithm consistently estimate the parameters in Gaussian Mixture model?

9 votes
0 answers
116 views

Why degree of freedom in statistics is so useful? [duplicate]

5 votes
2 answers
3k views

Can we correctly identify all the non-zero coefficients in the linear regression model?

5 votes
0 answers
226 views

Uniform Convergence of Moment under Empirical distribution

5 votes
1 answer
176 views

A Fundamental Question about Statistical Learning

5 votes
1 answer
330 views

Why models with better cross-validation performance are not necessarily do better job on test data set?

5 votes
1 answer
3k views

Stochastic Gradient Descent, Mini-Batch and Batch Gradient Descent

5 votes
2 answers
653 views

The performance metric used in prediction is different from the objective function to train the model

4 votes
1 answer
44 views

Solve the optimization problem of tree, should we make each rectangle contains exactly one training data point?

4 votes
2 answers
4k views

What is the interpretation of the coefficient of a covariate control variable in a multiple linear regression

4 votes
2 answers
480 views

Is the algorithm performance on the validation set a good criterion for model selection?

4 votes
1 answer
3k views

Is Fisher Sharp Null Hypothesis testable?

4 votes
1 answer
79 views

In real clinical diagnostic data set how can we know the "true label" of a patient?

4 votes
0 answers
3k views

Questions about the xgb.cv and GridSearchCV

4 votes
1 answer
2k views

Understanding mean independence in the regression setting

4 votes
2 answers
3k views

adding control variables in the regression in the experiment setting

4 votes
1 answer
121 views

Some logical questions about parameter estimation in the situations when the model is misspecified

3 votes
1 answer
55 views

Should the underlying logic of the model evaluation criterion match with the estimation procedure?

3 votes
2 answers
737 views

Right procedure to picking the value of hyper parameters

3 votes
1 answer
315 views

Difference in estimating treatment effect in experiment using regression with covariates and assuming the data come from stratified experiment?

3 votes
0 answers
453 views

Using Permutation Test to check the correlation of two random variables

2 votes
1 answer
38 views

Derivation of a truncated posterior distribution

2 votes
1 answer
210 views

One problem with imputing the missing value by the sample mean

2 votes
1 answer
309 views

When all predictors seem uncorrelated with the response variable, then what's the next step to build predictive model?

2 votes
1 answer
2k views

Understanding the meaning of the parameters in the linear regression model

2 votes
0 answers
193 views

Permutation test or two sample t-test in the A/B test setting

2 votes
1 answer
68 views

interpretation of residuals in the linear regression