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Bora Jasan

R Statistics, R Statistical Consulting Home - 0 views

    • Bora Jasan
       
      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.
Enrique Diaz Romero

An Introduction to R - 1 views

    • nerub val
       
      las carateristicas generales de R
    • nerub val
       
      El desarrollo de R
  • R is an integrated suite of software facilities for data manipulation, calculation and graphical display. Among other things it has an effective data handling and storage facility, a suite of operators for calculations on arrays, in particular matrices, a large, coherent, integrated collection of intermediate tools for data analysis, graphical facilities for data analysis and display either directly at the computer or on hardcopy, and a well developed, simple and effective programming language (called ‘S’) which includes conditionals, loops, user defined recursive functions and input and output facilities. (Indeed most of the system supplied functions are themselves written in the S language.)
    • Enrique Diaz Romero
       
      El entorno de R entre otras cosas nos permite el uso y almacenamiento eficaz de datos, así como su análisis en forma de matrices, un gran numero de herramientas graficas y un lenguaje claro y sencillo de programación en el que podemos encontrar un gran numero de funciones.
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  • his section presumes the reader has some familiarity with statistical methodology, in particular with regression analysis and the analysis of variance. Later we make some rather more ambitious presumptions, namely that something is known about generalized linear models and nonlinear regression. The requirements for fitting statistical models are sufficiently well defined to make it possible to construct general tools that apply in a broad spectrum of problems. R provides an interlocking suite of facilities that make fitting statistical models very simple. As we mention in the introduction, the basic output is minimal, and one needs to ask for the details by calling extractor functions.
  • When you use the R program it issues a prompt when it expects input commands. The default prompt is ‘>’, which on UNIX might be the same as the shell prompt, and so it may appear that nothing is happening. However, as we shall see, it is easy to change to a different R prompt if you wish. We will assume that the UNIX shell prompt is ‘$’.
  • R can be regarded as an implementation of the S language which was developed at Bell Laboratories by Rick Becker, John Chambers and Allan Wilks, and also forms the basis of the S-Plus systems. The evolution of the S language is characterized by four books by John Chambers and coauthors. For R, the basic reference is The New S Language: A Programming Environment for Data Analysis and Graphics by Richard A. Becker, John M. Chambers and Allan R. Wilks. The new features of the 1991 release of S are covered in Statistical Models in S edited by John M. Chambers and Trevor J. Hastie. The formal methods and classes of the methods package are based on those described in Programming with Data by John M. Chambers. See References, for precise references. There are now a number of books which describe how to use R for data analysis and statistics, and documentation for S/S-Plus can typically be used with R, keeping the differences between the S implementations in mind. See What documentation exists for R?.
  • R (“GNU S”), a language and environment for statistical computing and graphics. R is similar to the award-winning1 S system, which was developed at Bell Laboratories by John Chambers et al. It provides a wide variety of statistical and graphical techniques
    • Enrique Diaz Romero
       
      ¿Que es R y de donde viene? R nos lo presentan como un lenguaje y entorno que desciende del reconocido sistema S desarrollado por los laboratorios Bell, y que nos ofrece una serie de técnicas u herramientas para el análisis estadístico y gráfico
  •  
    Introducción completa al lenguaje R de programación para análisis de datos estadísticos.
grupo empresa

'R' language bringing statistical analytics to the masses (Q&A) | Software, Interrupted... - 0 views

    • grupo empresa
       
      El lenguaje r nos permite realizar una gran cantidad de predicciones de mercado y económicas que nunca antes se habian podido sacar con otros lenguajes o métodos.Este lenguaje es utilizado para la realización de predicciones analíticas que ayudan a entender mejor el mercado , las costumbres y las tendencias de los consumidores...Este además es un lenguaje muy joven todavía, al cual se le puede llegar a sacar una gran potencial.
  • Predictive analytics is statistical modeling by any other name. It's used by statisticians and data analysts across all verticals as a means to better understand their organization, both internally and externally. It helps identify trends and patterns, arming CIOs and other enterprise decision makers with the best possible information with which to make their decisions. Predictive analytics has a proven track record in the business intelligence field. Wal-Mart, for one, has used predictive analytics to better understand the habits and tendencies of their customers.
  • : R is still relatively young and is only just now being recognized outside of academic circles. Its practically limitless statistical capabilities make it attractive to anybody doing data analysis, be they a statistics professor or a financial analyst
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  • At this point, the future of predictive analytics is pointing directly to R, something we are calling the "perfect storm of predictive analytics."
viinjo A1c

Oracle launches Advanced Analytics for R modeling language | Business Intelligence - In... - 0 views

  • It's available as an Oracle 11g database option and costs $23,000 per processor license.
    • viinjo A1c
       
      Oracle además de desarollar programas sobre R, también los comercializa, obteniendo un beneficio de ello.
  • It's not surprising that Oracle has moved to support R, which "has become a real ubiquitous force in advanced analytics," said Forrester Research analyst James Kobielus. "It's everywhere. Enterprise adoption of it has been growing steadily. When we ask our customers what they're using for statistical modeling they'll say SAS or [IBM's] SPSS, but they increasingly say R in the same breath."
    • viinjo A1c
       
      Oracle reafirma el uso en aumento del lenguaje R entre sus clientes
  • It's not surprising that Oracle has moved to support R, which "has become a real ubiquitous force in advanced analytics," said Forrester Research analyst James Kobielus. "It's everywhere. Enterprise adoption of it has been growing steadily. When we ask our customers what they're using for statistical modeling they'll say SAS or [IBM's] SPSS, but they increasingly say R in the same breath."
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  • It's not surprising that Oracle has moved to support R, which "has become a real ubiquitous force in advanced analytics," said Forrester Research analyst James Kobielus. "It's everywhere. Enterprise adoption of it has been growing steadily. When we ask our customers what they're using for statistical modeling they'll say SAS or [IBM's] SPSS, but they increasingly say R in the same breath."
  • adoption
  • It's not surprising that Oracle has moved to support R, which "has become a real ubiquitous force in advanced analytics," said Forrester Research analyst James Kobielus. "It's everywhere. Enterprise adoption of it has been growing steadily. When we ask our customers what they're using for statistical modeling they'll say SAS or [IBM's] SPSS, but they increasingly say R in the same breath."
  • It's not surprising that Oracle has moved to support R, which "has become a real ubiquitous force in advanced analytics," said Forrester Research analyst James Kobielus. "It's everywhere. Enterprise adoption of it has been growing steadily. When we ask our customers what they're using for statistical modeling they'll say SAS or [IBM's] SPSS, but they increasingly say R in the same breath."
  • It's available as an Oracle 11g database option and costs $23,000 per processor license.
    • viinjo A1c
       
      Oracle además de desarollar programas sobre R, también los comercializa, obteniendo un beneficio de ello.  Oracle reafirma el uso en aumento del lenguaje R entre sus clientes
Bora Jasan

R Statistics, R Statistical Consulting R Statistics - 0 views

  • 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
       
      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
       
      Como hemos visto en la otra página, hace las funciones de una simple calculadora, siendo esta más potente
    • Bora Jasan
       
      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
       
      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
       
      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

Quick-R: Basic Statistics - 0 views

    • Bora Jasan
       
      Siguiendo con el funcionamiento del lenguaje de Programación R, podemos comprobar que puede describir básicas y complejas estadísticas, como por ejemplo: Tablas de contingencia (registrar y analizar la relación entre dos o más variables). Regresiones o ajustes lineales (simple o múltiple): Este tipo de estadísticas también se estudian en Matemáticas II tanto a nivel teórico como a nivel práctico (con Matlab). [...]
    • Bora Jasan
       
      Siguiendo con el funcionamiento del lenguaje de Programación R, podemos comprobar que puede describir básicas y complejas estadísticas, como por ejemplo: Tablas de contingencia (registrar y analizar la relación entre dos o más variables). Regresiones o ajustes lineales (simple o múltiple): Este tipo de estadísticas también se estudian en Matemáticas II tanto a nivel teórico como a nivel práctico (con Matlab). [...]
  • This section describes basic (and not so basic) statistics. It includes code for obtaining descriptive statistics, frequency counts and crosstabulations (including tests of independence), correlations (pearson, spearman, kendall, polychoric), t-tests (with equal and unequal variances), nonparametric tests of group differences
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  • multiple linear regression (including diagnostics, cross-validation and variable selection), analysis of variance (including ANCOVA and MANOVA), and statistics based on resampling.
David Moya

What is R? | inside-R | A Community Site for R - 1 views

    • Carlos Espinosa
       
      R desallorador de análisis estadístico siendo sus principales funciones la manipulación de datos,modelo estadístico y un abanico de funciones del análisis de datos que necesites.R es una comunidad on-line abierta en crecimiento.
    • David Moya
       
      R es usado sobretodo para crear programas que realicen estadisticas, ya que fue creado para ello principalmente. Con el se pueden hacer análisis estadísticos, predicciónes, modelos... Tiene herramientas que permiten usar poco código para programar estas estadisticas y modelos. Además es un proyecto libre por lo que puedes tener acceso al código fuente y mejorarlo. Gracias a esto y a la gran comunidad que tiene, actualmente es de una gran calidad y tiene disponibles varios "add-on packages".
  • Complete data analyses can often be represented in just a few lines of code.
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  • R is a programming language: you do data analysis in R by writing scripts and functions in the R programming language. R is a complete, interactive, object-oriented language: designed by statisticians, for statisticians.
  • R is data analysis software: data scientists, statisticians, analysts, quants, and others who need to make sense of data use R for statistical analysis, data visualization, and predictive modeling.
  • R has benefited for over 15 years from the "many-eyes" approach to code improvement, and as a result has an extremely high standard of quality and numerical accuracy.
  • R is an open-source software project
  • you can download and use R for free, but the source code is also open for inspection and modification to anyone who wants to see how the methods and algorithms work under the covers.
  • R is an environment for statistical analysis: Available in the R language are functions for virtually every data manipulation, statistical model, or chart that the data analyst could ever need. Not only are all the "standard" methods available, but because most cutting-edge research in statistics and predictive modeling is done in R, the latest techniques are usually available first in the R system.
  • R was first created by Ross Ihaka and Robert Gentleman at the University of Auckland in 1993, and since then the project leadership has grown to include more than 20 leading statisticians and computer scientists from around the world. In addition, thousands of others have contributed additional functionality to the R language by creating add-on "packages" for use by the 2 million users of R worldwide.
grupo empresa

R programming - R language - R commander | R statistics - 0 views

    • grupo empresa
       
      el lenguaje de programación R, es un lenguaje con el los elementos gráficos y los algoritmos se relacionan perfectamente, esto hace que sea un lenguaje bastante intuitivo y muy útil a nivel práctico.
  • The R programming language is a populair and easy to use programming langauge used on combination with R commander. R provides a lot of statistical and graphical functions and it is highly extensible. The best thing about R is that it is easy to plot high quality graphics.
Rafa Llopis

100 Mensajes más leídos de R - 0 views

  • Top 100 R posts of 2012
    • Rafa Llopis
       
      Es una lista con los 100 post más visitados del 2012 sobre lenguaje R, con datos muy interesantes sobre el tema y aportaciones con ejemplos programados.
  • R-statistics blog
  • around 245 active R bloggers 
  • ...9 more annotations...
  • these bloggers wrote around 3200 posts about R
  •  list of the top visited posts 
  • programming environment
  • contribute their R article
  • (unofficial) online journal of the R statistical
  • .  Bellow you can see a few figures comparing the statistics of 2012
  • Reproducible R blogging – make it to blog from R to WordPress and blogger (via knitr, RStudio, etc.)
  • Creating online interactive visualization using R
  • More guest posts on R-bloggers
grupo empresa

Programming language R 3.0 gets long vectors - The H Open: News and Features - 0 views

    • grupo empresa
       
      La versión 3.0 de R ha sido lanzada recientemente, esta incluye numerosas mejoras y funcionalidades extra soportadas en más plataformas. Este es un lenguaje con mucha fama y uso en el sector del análisis estadístico ya que es sencillo de aprender incluso para personal amateur. Como ejemplo de su importancia vemos que incluso Google lo usa para analizar los datos con los que trabaja.
  • Version 3.0 of the R programming language, the software environment designed specifically for statistical calculations and graphing, has been released.
  • R is widely used by statisticians and data analysts, as it is simple to learn, even for non-programmers.
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  • There are also around 5000 extension packages for R dedicated to performing specialised tasks.
  • R is also used by Google for data analysis.
    • vest monje
       
      El lenguaje R ha sacado su nueva versión 3.0 que incluye mejoras como la ampliación del rango de los vectores así como modificaciones que facilitan el uso de matrices y las operaciones matriciales.
nerub val

R - GNU Project - Free Software Foundation (FSF) - 1 views

shared by nerub val on 24 Apr 13 - No Cached
  • R is a language and environment for statistical computing and graphics.
  • developed at Bell Laboratories
  • R provides an Open Source route to participation in that activity.
  • ...21 more annotations...
  • R provides a wide variety of statistical
  • and graphical techniques,
  • R is an integrated suite
  • of software facilities for data manipulation
  • storage facility,
  • operators for calculations on arrays,
  • collection of intermediate tools for data analysis,
  • graphical facilities
  • simple and effective programming language
  • is designed around a true computer languag
  • R, like S
  • allows users to add additional functionalit
  • defining new functions
    • nerub val
       
      r es un lenguaje creado por bell laboraties de codigo abierto
    • nerub val
       
      caracteristicas del lenguaje , facil almacenamiento, ayudas en operaciones y graficas, y efectivo
  • For computationally-intensive tasks, C, C++ and Fortran code can be linked and called at run time
    • nerub val
       
      compatible con c y c++
  • R can be found on http://cran.r-project.org, the master site of comprehensive R archive network, or at one of its mirrors.
    • nerub val
       
      enlace para descargarlo para linux, mac y windows
    • nerub val
       
      y algunos recursos adicionales
  • with an FAQ list, and an introduction to the language and how to use R for doing statistical analysis and graphics in PDF and other formats.
    • nerub val
       
      tutorial de como usar r asi como diversos posibles problemas con el y su istalacion y soluciones
practica5 empresas

Quick-R: Home Page - 0 views

shared by practica5 empresas on 29 Apr 13 - Cached
    • practica5 empresas
       
      Es una buena pagina para aprender a programar en R estadisticas avanzadas
  • If you currently use another statistical package, why learn R? It's free! If you are a teacher or a student, the benefits are obvious. It runs on a variety of platforms including Windows, Unix and MacOS. It provides an unparalleled platform for programming new statistical methods in an easy and straightforward manner. It contains advanced statistical routines not yet available in other packages. It has state-of-the-art graphics capabilities.
LuCla EdPa

What is R? (Oracle R Enterprise) - 0 views

  • R has been receiving a lot of attention recently, although it’s been around for over 15 years. R is an open-source language and environment for statistical computing and data visualization, supporting data manipulation and transformations, as well as sophisticated graphical displays
    • LuCla EdPa
       
      R es un lenguaje de código abierto, que admite ser manipulado por la comunidad
  • Corporate data analysts and statisticians often know R and use it in their daily work, either writing their own R functionality,
    • LuCla EdPa
       
      Es usado por corporaciones y empresas
  • It’s a powerful, extensible environment, and as noted above, it has a wide range of statistics and data visualization capabilities. It’s easy to install and use, and it’s free
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  • n contrast, statisticians and data analysts typically don’t know SQL and are not familiar with database tasks. R provides statisticians and data analysts access a wide range of analytical capabilities in a natural statistical language
  • However, there is another issue that limits R’s scalability…
  • R is limited by the memory and processing power of the machine where it runs
  • this chews up memory faster.
    • LuCla EdPa
       
      Pese a ser un potente programa, parece ser que no administra demasiado bien los recursos
Joca Vijo

R for Business Analytics - 1 views

  • The R statistical software is the fastest growing analytics platform in the world, and is established in both academia and corporations for robustness, reliability and accuracy.
Raúl Sarrión

An R Introduction to Statistics | R Tutorial - 1 views

shared by Raúl Sarrión on 22 Apr 13 - Cached
  • In an experiment study, various treatments are applied to test subjects and the response data is gathered for analysis. A critical tool for carrying out the analysis is the Analysis of Variance (ANOVA).
    • Raúl Sarrión
       
      El lenguaje de programación R se puede utilizar para realizar análisis de la varianza
    • Raúl Sarrión
       
      ANOVA
  •  
    In an experiment study, various treatments are applied to test subjects and the response data is gathered for analysis. A critical tool for carrying out the analysis is
Raúl Sarrión

The R programming language for programmers coming from other programming languages - 0 views

    • Raúl Sarrión
       
      He aquí otra página que aparte de darnos una introducción del legunaje R, nos enseña paso a paso sus símbolos y de cómo escribir y programar en dicho lenguaje. Otra anotación a tener en cuenta es que nos vuelve a repetir que es de muy fácil aprendizaje y de las ventajas de las que dispone
  • The language is actually fairly simple, but it is unconventional. These notes are intended to make the language easier to learn for someone used to more commonly used languages such as C++, Java, Perl, etc.
  • R is more than a programming language. It is an interactive environment for doing statistics
  • ...4 more annotations...
  • R is more than a programming language. It is an interactive environment for doing statistics.
  • The R language is the scripting language for the R environment,
    • Raúl Sarrión
       
      En esta página se da información útil cuando ya eres programador en otros lenguajes
  • This document is a work in progress. Corrections and comments are welcome.
    • Raúl Sarrión
       
      Hay que tener cuidado porque el documento está en desarrollo
    • Raúl Sarrión
       
      Se reciben comentarios de los usuarios
Jorge Castro

An Introduction to R - 0 views

  • 1 Introduction and preliminaries
    • Pablo David
       
      Introducción y explicación del lenguaje R
  • 2 Simple manipulations; numbers and vectors
    • Pablo David
       
      Instrucciones para la programación en R
  • 5 Arrays and matrices
  • ...9 more annotations...
  • 5 Arrays and matrices
  • 10 Writing your own functions
    • Pablo David
       
      Crear funciones en lenguaje R
  • 11 Statistical models in R
    • Pablo David
       
      Modelos estadísticos en lenguaje R,
    • Jorge Castro
       
      Utilidades del lenguaje R
  • R is an integrated suite of software facilities for data manipulation, calculation and graphical display.
    • Jorge Castro
       
      Uso básico de números y vectores 
    • Jorge Castro
       
      Instrucciones para escribir tus propias funciones en R
  •  
    Esta página es un manual de todo lo relacionado con el lenguaje de programación R, desde los comandos más básicos hasta usos más complejos como la descomposición QR entre otros.
La morsa Peluda

Manual R commander - 0 views

  •  
    Tutorial sobre el uso del R Commander, con capturas de pantalla
nerub val

R FAQ - 0 views

  • 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
       
      funciona en mac windows y unix
    • nerub val
       
      creadores del lenguaje c
    • nerub val
       
      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
       
      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
       
      manual de referencia de r
    • nerub val
       
      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
       
      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
       
      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
       
      razon del nombre
  • 3.3.1 Lexical scoping
    • nerub val
       
      a partir de aqui hay especificaciones tecnicas del lexico de r
  • Web Interfaces
    • nerub val
       
      proyectos relacionados con r
  • 5.1 Which add-on packages exist for R?
    • nerub val
       
      a partir de aqui estan muchos de los paquetes y que contienen para r.
teleco teleco

The R Project for Statistical Computing - 0 views

  •  
    Introducción al lenguaje R
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