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Use this tag for any *on-topic* question that (a) involves `R` either as a critical part of the question or expected answer, & (b) is not *just* about how to use `R`.

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1answer
say I have the following sapply call which results in the following: > sapply(1:3,function(x) (x+3):(x+x)) [[1]] [1] 4 3 2 [[2]] [1] 5 4 [[3]] [1] 6 What I'd like to get is: [1] 4 3 2 5 4 6 Ho …
asked May 24 '16 by user1172468
0
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1answer
Let us say I have a data for a random variable X -- Is there a convenient test that can tell me how well it fits the T distribution? Code in R would be helpful. …
asked May 29 '16 by user1172468
0
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1answer
appreciate links to pseudo code or implementations in R, Java, Python, matlab -- preferably open source. Additional notes: I am not looking for hierarchical clustering where I find clusters within clusters I would be interested in other definitions of multiscalar …
asked Apr 26 '14 by user1172468
1
vote
1answer
Suppose I'm use a random forest binary classifier in R. What parameter(s) can I tweak in my learned model (or model to be learned) that can help me with this tradeoff. for example: In logistic … regression I would change the threshold on the probability the classifier predicts. How do I so something similar with randomforest, especially using the R package. …
asked Mar 20 '17 by user1172468
1
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3answers
Suppose my data consisted of the data in the dataframe df (below) -- which columns would I drop x, y or z for methods that are allergic to correlated variables? library(corrplot) x <- seq(0, 100, 1) …
asked May 15 '16 by user1172468
0
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0answers
Say I have the following in R rm(list=ls()) set.seed(1000) n<-20 x<-rnorm(n, 0.5,1) y<-rnorm(n, 0.5,1) type<-rep(2,n) df1<-data.frame(x,y,type) x<-rnorm(n, -0.5,1) y<-rnorm(n, -0.5,1) type<-rep(5,n …
asked May 20 '16 by user1172468
15
votes
5answers
. Bhattacharyya and R. A. Johnson. The Professor requires us to use SAS for the homeworks. My question is that: is there a Java library(ies), that can be used instead of SAS for problems typically seen in … looked at similar questions on Stackoverflow but have not found anything compelling. NOTE: I am aware of R, SciPy and Octave and java libraries that make calls to them -- I am looking for a Java …
asked Sep 18 '12 by user1172468
1
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1answer
A colleague told me about "proc surveylogistic" in SAS -- see details here -- is there an equivalent function in R? …
asked May 25 '16 by user1172468
10
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3answers
?, R?) is this a discipline in Statistics that deals with such programming: experimental statistics?, computational statistics? simulation? …
asked Oct 3 '12 by user1172468
0
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0answers
I have multivariate data about a certain population with more than 1000 attributes per exemplar. Some of the variables are basic demographics attributes including: gender, age, race, ethnicity, incom …
asked Apr 22 '14 by user1172468