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grupo empresa

Rise of Open and Free R Language : Target  Health  Global - 0 views

blog.targethealth.com/?p=3225

rise free language programming R

shared by grupo empresa on 24 Apr 13 - No Cached
    • grupo empresa
      grupo empresa on 24 Apr 13
       
      R desde 2011 esta creciendo a un ritmo muy rápido, sobrepasando los principales lenguajes como MATLAB o SAS, esto es importante ya que R es un leguaje freeware. Una de las razones de su crecimiento es que tiene características únicas como la computación en paralelo, que permite juntar los recursos de varias CPU's sin tener que limitarse a las velocidades de reloj impuestas por los factores tecnológicos.
  • Started as an open source programming language for data analysis, its popularity and use is spreading to major companies as diverse as Pfizer, Merck, Google, Shell, and Bank of America.
  • R programming language offers something that most of current languages do not support well, parallelism. With a package named “SNOW”, R can take advantage of multiple cores in the CPU. Due to the limitation in increasing CPU’s clock speed, Intel and AMD are stuffing more cores into the processors. There aren’t many software in the market that can take advantage of this, but R is.
nerub val

R FAQ - 0 views

www.ci.tuwien.ac.at/...R-FAQ.html

rise

shared by nerub val on 24 Apr 13 - Cached
  • The “Comprehensive R Archive Network” (CRAN) is a collection of sites which carry identical material, consisting of the R distribution(s), the contributed extensions, documentation for R, and binaries
  • he CRAN master site at TU Wien, Austria, can be found at the URL http://cran.R-project.org/ Daily mirrors are available at URLs including
  • R is a system for statistical computation and graphics
  • ...27 more annotations...
  • s very similar in appearance to S, the underlying implementation and semantics are derived from Scheme
  • antics are derive
  • mantics are derived
  • It is possible for the user to interface to procedures written in the C, C++, or FORTRAN languages for efficiency.
  • R was initially written by Ross Ihaka and Robert Gentleman
  • Since mid-1997 there has been a core group (the “R Core Team”) who can modify the R source code archive. The group currently consists of Doug Bates, John Chambers, Peter Dalgaard, Robert Gentleman, Kurt Hornik, Stefano Iacus, Ross Ihaka, Friedrich Leisch, Thomas Lumley, Martin Maechler, Duncan Murdoch, Paul Murrell, Martyn Plummer, Brian Ripley, Duncan Temple Lang, Luke Tierney, and Simon Urbanek.
  • R is being developed for the Unix, Windows and Mac
    • nerub val
      nerub val on 24 Apr 13
       
      funciona en mac windows y unix
    • nerub val
      nerub val on 24 Apr 13
       
      creadores del lenguaje c
    • nerub val
      nerub val on 24 Apr 13
       
      colaboradores en el desarrollo asta 1997
  • Sources, binaries and documentation for R can be obtained via CRAN, the “Comprehensive R Archive Network” (see What is CRAN?)
  • How can R be installed (Macintosh) Next: How can R be installed (Windows), Previous: How can R be installed?, Up: How can R be installed?
    • nerub val
      nerub val on 24 Apr 13
       
      como instalarlo en linux windows y mac
  • Printed copies of the R reference manual for some version(s) are available from Network Theory Ltd, at http://www.network-theory.co.uk/R/base/. For each set of manuals sold, the publisher donates USD 10 to the R Foundation (see What is the R Foundation?).
    • nerub val
      nerub val on 24 Apr 13
       
      manual de referencia de r
    • nerub val
      nerub val on 24 Apr 13
       
      publicado en papel
  • The R distribution also comes with the following manuals. “An Introduction to R” (R-intro) includes information on data types, programming elements, statistical modeling and graphics. This document is based on the “Notes on S-Plus” by Bill Venables and David Smith. “Writing R Extensions” (R-exts) currently describes the process of creating R add-on packages, writing R documentation, R's system and foreign language interfaces, and the R API. “R Data Import/Export” (R-data) is a guide to importing and exporting data to and from R. “The R Language Definition” (R-lang), a first version of the “Kernighan & Ritchie of R”, explains evaluation, parsing, object oriented programming, computing on the language, and so forth. “R Installation and Administration” (R-admin).
    • nerub val
      nerub val on 24 Apr 13
       
      servidores desde conde descargar diferentes paquetes de r
  • It is the opinion of the R Core Team that one can use R for commercial purposes (e.g., in business or in consulting). The GPL, like all Open Source licenses, permits all and any use of the package. It only restricts distribution of R or of other programs containing code from R. This is made clear in clause 6 (“No Discrimination Against Fields of Endeavor”) of the Open Source Definition:
    • nerub val
      nerub val on 24 Apr 13
       
      r es de libre uso, solo esta restringida su distrubucion.
  • The name is partly based on the (first) names of the first two R authors (Robert Gentleman and Ross Ihaka),
    • nerub val
      nerub val on 24 Apr 13
       
      razon del nombre
  • 3.3.1 Lexical scoping
    • nerub val
      nerub val on 24 Apr 13
       
      a partir de aqui hay especificaciones tecnicas del lexico de r
  • Web Interfaces
    • nerub val
      nerub val on 24 Apr 13
       
      proyectos relacionados con r
  • 5.1 Which add-on packages exist for R?
    • nerub val
      nerub val on 24 Apr 13
       
      a partir de aqui estan muchos de los paquetes y que contienen para r.
Rafa Llopis

R You Ready for R?(2/2) - 0 views

bits.blogs.nytimes.com/...r-you-ready-for-r

lenguaje R publicacion blog new york times

shared by Rafa Llopis on 29 Apr 13 - No Cached
  • R You Ready for R?
    • Rafa Llopis
      Rafa Llopis on 29 Apr 13
       
      Artículo del New York Times sobre la influencia del lenguaje R.
  • R helps people deal with large volumes of data in a wide variety of industries
  • the software is open source, meaning people can pick it up for free and make their own changes to the code
  • ...10 more annotations...
  • People chimed in with the unique ways they’re using the technology
  • talked about its passion
  • Vhayu Technologies
  • R to help traders on Wall Street
  • for tweaking
  • Speaking of R, Mr. Chambers said, “It’s way beyond anything we could have imagined at Bell Labs.”
  • Were Pfizer to use R in clinical studies
  • “It’s very hard to displace the industry standard in those types of cases,” said Max Kuhn, associate director of nonclinical statistics at Pfizer.
  • Revolution offers ways to speed up the software on certain applications and to run it on large computers
  • Revolution provides support services to customers like Pfizer and Bank of America
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