> * Ben Bolker <ooby...@tznvy.pbz> [2012-11-07 21:51:07 +0000]: > > Sam Steingold <sds <at> gnu.org> writes: > >> It would be nice if LiblineaR() accepted data in the form of a sparse >> matrix (it does not accept whatever e1071::read.matrix.csr returns). >> >> It would also be nice if there were functions to read/write files in the >> native liblinear file format; I am sure the original liblinear library >> provides at least the input code. > > You appear to have sent this to the general R-help mailing list > rather than to the maintainer (or maybe you Bcc'd the maintainer)?
It was CCed (not BCCed) to Thibault Helleputte <thellepu...@gmail.com> > Sparse matrices are nice, but once you start using sparse matrices > you have to start worrying about the details of which linear algebra > operators have been defined for them (e.g. whether the available > operators allow pivoting, or work on rank-deficient matrices, or ...) > So it's not always as easy as flipping a switch ... The library in question is merely a thin layes which passes the data to the underlying C++ library. The original library comes with a command line interface which accepts input file in sparse matrix format _ONLY_. -- Sam Steingold (http://sds.podval.org/) on Ubuntu 12.04 (precise) X 11.0.11103000 http://www.childpsy.net/ http://mideasttruth.com http://dhimmi.com http://honestreporting.com http://think-israel.org http://jihadwatch.org XFM: Exit file manager? [Continue] [Cancel] [Abort] ______________________________________________ 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.
