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Bora Jasan

R Statistics, R Statistical Consulting Home - 0 views

www.rstatisticalsolutions.com

statistics consulting

shared by Bora Jasan on 01 May 13 - No Cached
    • Bora Jasan
      Bora Jasan on 01 May 13
       
      Este es un ejemplo de una empresa que se dedica a proveer datos estadísticos, análisis de distintos tipos, data mining... Además, también atienden a diferentes negocios como servicios financieros, productos médicos, etc. Es, en definitiva, lo que nos puede aportar el lenguaje de programación R a nivel empresarial.
  • R Statistical Consulting provides statistical software development and consulting services. We design statistical based algorithms in the R language that provide advanced statistical / graphical data analysis, R Project time series analysis, econometrics, data mining, machine learning, statistical computing and optimization.
  • We currently serve a broad range of businesses, specifically including the financial services, medical product, and hotel industries. We provide end-to-end solutions that provide our clients the tools needed to make critical business decisions that impact the company's bottom line.
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  • R Statistical Consulting draws on over 20 years of experience in computational algorithmic infrastructure and database development. We also have depth of experience in the migration of functionality to newer, advanced platforms.
Bora Jasan

R Statistics, R Statistical Consulting R Statistics - 0 views

www.rstatisticalsolutions.com/rstatistics.html

statistics consulting

shared by Bora Jasan on 29 Apr 13 - No Cached
  • R is mostly used by statisticians and other practitioners requiring an environment for statistical computation and software development, it can also be used as a general matrix calculation
    • LuCla EdPa
      LuCla EdPa on 29 Apr 13
       
      Pese a que se requieren conocimientos previos, es de fácil aprendizaje, y por otro lado, tiene diversas aplicaciones estadísticas
  • R is an interpreted language typically used through a command line interpreter. If one types "2+2" at the command prompt and presses enter, the computer replies with "4".
    • LuCla EdPa
      LuCla EdPa on 29 Apr 13
       
      Como hemos visto en la otra página, hace las funciones de una simple calculadora, siendo esta más potente
    • Bora Jasan
      Bora Jasan on 01 May 13
       
      Esta referencia nos muestra en qué consiste el Lenguaje de Programación R y para qué se dedica especialmente. Además, forma parte del proyecto GNU y es código abierto (libre)
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    • Bora Jasan
      Bora Jasan on 06 May 13
       
      Esta referencia nos muestra en qué consiste el Lenguaje de Programación R y para qué se dedica especialmente. Además, forma parte del proyecto GNU y es código abierto (libre)
    • Bora Jasan
      Bora Jasan on 06 May 13
       
      Esta referencia nos muestra en qué consiste el Lenguaje de Programación R y para qué se dedica especialmente. Además, forma parte del proyecto GNU y es código abierto (libre)
Alexis Agustín

See how Deloitte uses R for actuarial analysis - 0 views

blog.revolutionanalytics.com/...-r-for-actuarial-analysis.html

Deloitte Analisis de datos Regression Poisson extrapolacion

shared by Alexis Agustín on 25 Apr 13 - No Cached
    • Alexis Agustín
      Alexis Agustín on 25 Apr 13
       
      Aqui un consultor de Deloitte nos muestra como usa R para explorar datos y ajustarlos en distribuciones, calculando proyecciones usando la regresion de Poisson. Ademas lo contrapone a Excel, concluyendo que no hay una hoja de calculo en la que confundir columnas, si no que en lineas de codigo simple que se puede copiar se puede trabajar mas facilmente con grandes cantidades de datos
  • Jim Guszcza (Predictive Analytics lead at Deloitte Consulting and Assistant Professor at UW-Madison) who gave a great webinar presentation yesterday
  • R is used for exploratory data analysis and modeling, with a live examples of fitting a mixute distribution to bimodal claims data, and calculating loss reserves using Poisson regression.
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  • Just one simple line of [R] code that would work just as well for a 100-by-100 loss triangle as it would for a 10-by-10 triangle. No hidden cells in the spreadsheet, no risk of spreadsheet error. It's a little bit of code you could look at in one screen, it's replicable ... and this does all the work that a spreadsheet would do. 
  • He uses the Allstate Claim Prediction Challenge data (from a recent Kaggle competition) to fit a Tweedie model to 13 million records of claim data. (The Tweedie distribution is often used to model insurance claims, where many claims are exactly zero, and non-zero claims follow a continuous Gamma-like distribution.) Using the forthcoming rxGLM function, he fit the model to this large data set in just over two minutes (140.22 seconds) using a single quad-core PC.
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.
Antoino Martinez Vila

Preguntas Frecuentes sobre el lenguaje R - 1 views

cran.r-project.org/...R-FAQ.html

tags R lenguaje preguntas frecuentes

shared by Antoino Martinez Vila on 24 Apr 13 - Cached
    • Antoino Martinez Vila
      Antoino Martinez Vila on 24 Apr 13
       
      Preguntas Frecuentes acerca del lenguaje de programacion R.
  • Can I use R for commercial purposes?
  • R is released under the GNU General Public License (GPL) version 2. If you have any questions regarding the legality of using R in any particular situation you should bring it up with your legal counsel. We are in no position to offer legal advice. 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:
  • ...2 more annotations...
  • Why is R named R?
  • The name is partly based on the (first) names of the first two R authors (Robert Gentleman and Ross Ihaka), and partly a play on the name of the Bell Labs language `S'
  • Antoino Martinez Vila on 24 Apr 13
     
    Este documento contiene respuestas a algunas de las preguntas más frecuentes acerca de R.
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