User Martin O'Leary

63 votes

Accepted

Why would R return NA as a lm() coefficient?

answered Apr 3, 2012 at 23:01

43 votes

Weibull Distribution v/s Gamma Distribution

answered Nov 25, 2013 at 12:01

24 votes

Accepted

Is there a formula or rule for determining the correct sampSize for a randomForest?

answered Mar 20, 2012 at 1:51

21 votes

Accepted

Gradient descent vs lm() function in R?

answered Apr 6, 2012 at 2:15

15 votes

Correlation between matrices in R

answered Mar 21, 2012 at 1:41

13 votes

Accepted

randomForest and variable importance bug?

answered Aug 24, 2012 at 22:23

8 votes

Accepted

Literature on this kind of bias

answered May 13, 2013 at 13:12

8 votes

Measuring individual player effectiveness in 2-player per team sports

answered Mar 21, 2012 at 1:37

7 votes

Accepted

Regarding the R packages that share the similar functionalities of NLTK toolkit

answered Mar 30, 2012 at 16:19

7 votes

Accepted

Increase training performance of a neural network with low learning rate?

answered Mar 30, 2012 at 19:54

7 votes

Why adding an NA indicator column instead of value imputation (for randomForest)

answered May 21, 2012 at 12:16

6 votes

The dangers of stepwise variable selection in regression

answered Jun 5, 2013 at 11:11

6 votes

Accepted

Custom error function for randomForest R package

answered Mar 20, 2012 at 4:04

6 votes

Accepted

The Birthday Problem, revisited...?

answered Mar 22, 2012 at 15:25

6 votes

What are the advantages / disadvantages of using splines, smoothed splines, and gaussian process emulators?

answered Mar 22, 2012 at 19:50

5 votes

Accepted

Using SparseM/Matrix Sparse Matrix in training SVM from e1071 returning different results from same data in standard matrix

answered Mar 23, 2012 at 20:03

5 votes

Accepted

SVD of a matrix with missing values

answered Jul 30, 2012 at 0:09

4 votes

Accepted

How can I group strings by common themes?

answered Mar 29, 2012 at 21:54

3 votes

Is an implementation of a density function for a logit-normal distribution available in R?

answered Mar 31, 2012 at 21:19

3 votes

Accepted

Is Perkins et al.'s "skill score" an application of Bayes' theorem?

answered Aug 10, 2012 at 5:14

3 votes

How to get coefficients from princomp object in R?

answered Apr 4, 2012 at 17:18

3 votes

Accepted

Probability of a randomly generated string being already present in a data set

answered Apr 4, 2012 at 17:23

3 votes

Accepted

How to help people understand "...per 100,000"?

answered Apr 5, 2012 at 18:24

3 votes

Recommendations for MRI classification in R of large dataset (n=100, p=20000)

answered Aug 29, 2012 at 21:25

2 votes

What is the relationship between the normal and the t-distribution in R (pt and pnorm)?

answered Dec 11, 2013 at 18:54

2 votes

Accepted

Estimate The Rate At Which Standard Deviation Scales With An Independent Variable

answered Jan 22, 2015 at 14:43

2 votes

Accepted

Sampling with inclusion/exclusion criteria from known distribution

answered Mar 30, 2012 at 18:51

2 votes

Accepted

Bracket Theory and Probability

answered Mar 29, 2012 at 17:23

2 votes

Mutual information with a Dirac delta type pdf

answered Mar 22, 2012 at 21:19

2 votes

Good algorithm for processing positional estimates

answered Mar 22, 2012 at 22:54

Stack Exchange Network

34 Answers

Why would R return NA as a lm() coefficient?

Weibull Distribution v/s Gamma Distribution

Is there a formula or rule for determining the correct sampSize for a randomForest?

Gradient descent vs lm() function in R?

Correlation between matrices in R

randomForest and variable importance bug?

Literature on this kind of bias

Measuring individual player effectiveness in 2-player per team sports

Regarding the R packages that share the similar functionalities of NLTK toolkit

Increase training performance of a neural network with low learning rate?

Why adding an NA indicator column instead of value imputation (for randomForest)

The dangers of stepwise variable selection in regression

Custom error function for randomForest R package

The Birthday Problem, revisited...?

What are the advantages / disadvantages of using splines, smoothed splines, and gaussian process emulators?

Using SparseM/Matrix Sparse Matrix in training SVM from e1071 returning different results from same data in standard matrix

SVD of a matrix with missing values

How can I group strings by common themes?

Is an implementation of a density function for a logit-normal distribution available in R?

Is Perkins et al.'s "skill score" an application of Bayes' theorem?

How to get coefficients from princomp object in R?

Probability of a randomly generated string being already present in a data set

How to help people understand "...per 100,000"?

Recommendations for MRI classification in R of large dataset (n=100, p=20000)

What is the relationship between the normal and the t-distribution in R (pt and pnorm)?

Estimate The Rate At Which Standard Deviation Scales With An Independent Variable

Sampling with inclusion/exclusion criteria from known distribution

Bracket Theory and Probability

Mutual information with a Dirac delta type pdf

Good algorithm for processing positional estimates