These are not intended for use by users. lambda.interp does linear interpolation of the lambdas to obtain a prediction at a new point s. glmnet_softmax does the classification for multinomial models. nonzeroCoef determines in an efficient manner which variables are nonzero in each fit. jerr prints out error messages from the C++ routines. plotCoef is called by the plot method for glmnet objects. check_dots is used in coef and predict with argument exact=TRUE, to make sure user supplies original data used to fit the "glmnet" object.

Author

Trevor Hastie