I am trying to use the lars package in R to carry out lasso analysis. However, I am having some problems. Please could you help me with the following questions:
1) Exactly what format do x and y need to be in for cv.lars(x, y) and lars (x, y)? And what information do x and y need to contain exactly? I have tried using to test just a simple matrix of numeric values for x and a simple vector of numeric values for y but have got error messages. 2)For the K-fold cross-validation are the K subsets randomly chosen? I have read the document 'The lars Package', which is helpful. However, when I try using the package I am getting a variety of error messages. I am not an advanced user of R so please do be very specific. Thanks in advance for your help in this matter. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
