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Ram Sharma's user avatar
Ram Sharma's user avatar
Ram Sharma's user avatar
Ram Sharma
  • Member for 12 years, 6 months
  • Last seen more than 2 years ago
93 votes
2 answers
50k views

Resampling / simulation methods: monte carlo, bootstrapping, jackknifing, cross-validation, randomization tests, and permutation tests

22 votes
1 answer
15k views

Regression in $p>n$ setting: how to choose regularization method (Lasso, PLS, PCR, ridge)?

16 votes
2 answers
8k views

AIC, BIC and GCV: what is best for making decision in penalized regression methods?

10 votes
4 answers
5k views

Estimating random effects and applying user defined correlation/covariance structure with R lme4 or nlme package

8 votes
1 answer
1k views

Generating a correlated data matrix where both observations and variables are correlated

8 votes
1 answer
9k views

comparing OLS, ridge and lasso

6 votes
1 answer
302 views

creating multiple categorical variable with specified degree of association (correlation) matrix [duplicate]

6 votes
1 answer
10k views

Clustering high dimensional data (p > n) in R

6 votes
2 answers
6k views

When do kernel based method perform better than the regular

5 votes
1 answer
2k views

Using PC scores or cluster analsis in predictions

3 votes
1 answer
334 views

For a model like this what performance measures can I calculate and how?

2 votes
1 answer
2k views

Is it valid to compare p-values from test statistics with different DF?

1 vote
0 answers
499 views

Good resources about reversible-jump MCMC sampler in R

1 vote
1 answer
1k views

extract fixed effect for first level in lme function nlme package