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Contents contributed and discussions participated by LuCla EdPa

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LuCla EdPa

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

blogs.oracle.com/...what_is_r

shared by LuCla EdPa on 29 Apr 13 - No Cached
  • 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
      LuCla EdPa on 29 Apr 13
       
      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
      LuCla EdPa on 29 Apr 13
       
      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
  • ...4 more annotations...
  • 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
      LuCla EdPa on 29 Apr 13
       
      Pese a ser un potente programa, parece ser que no administra demasiado bien los recursos
LuCla EdPa

Open Source R Language Could Revolutionize Business Intelligence - Enterprise Apps Today - 0 views

www.enterpriseappstoday.com/...e-business-intelligence-1.html

shared by LuCla EdPa on 29 Apr 13 - No Cached
  • provides a new framework for fast and efficient multi-core processing of large data sets,
    • LuCla EdPa
      LuCla EdPa on 29 Apr 13
       
      Concluimos que R se empezó a usar hace poco y que su crecimiento ha sido muy rápìdo. Ayuda a ello su gran rapidez y fácil manejo
LuCla EdPa

Big Data Analytics with Revolution R Enterprise for IBM PureData System for Analytics -... - 0 views

www.revolutionanalytics.com/...edata-system-for-analytics.php

shared by LuCla EdPa on 29 Apr 13 - No Cached
  • Data sets that were previously unmanageable are now opening up worlds of possibility due to flexible and powerful platforms to manage the scale and complexity associated with crunching massive data
    • LuCla EdPa
      LuCla EdPa on 29 Apr 13
       
      Nuevos programas como R permiten manejar grandes bases de datos, herramienta muy útil para grandes empresas como IBM. Antes, dichas bases de datos no se podían manejar
  • can deliver 10-100x performance improvements at a fraction of the cost compared to traditional analytics vendors.
    • LuCla EdPa
      LuCla EdPa on 29 Apr 13
       
      El rendimiento puede aumentar mucho con el uso de R comparado con otros métodos estadísticos
  • Advanced R computations
LuCla EdPa

R Statistics, R Statistical Consulting R Statistics - 0 views

www.rstatisticalsolutions.com/rstatistics.html

statistics consulting

shared by LuCla EdPa 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
LuCla EdPa

R integrated throughout the enterprise analytics stack - 0 views

blog.revolutionanalytics.com/...r-in-the-enterprise.html

shared by LuCla EdPa on 29 Apr 13 - No Cached
  • and as new graduates trained in R have migrated to the workplace the demand for R in corporations has become more and more intense. 
    • LuCla EdPa
      LuCla EdPa on 29 Apr 13
       
      R ha crecido mucho en el ámbito de la empresa
  • Let's take a look at some of the applications within the analytics stack which now provide integration with R. 
    • LuCla EdPa
      LuCla EdPa on 29 Apr 13
       
      Pasamos a ver algunas empresas que usan R
  • Oracle announced last year a forthcoming connection between R and Oracle
    • LuCla EdPa
      LuCla EdPa on 29 Apr 13
       
      Oracle, creadora de Java entre otros, hará posible la conexión entre los dos lenguajes
  • ...1 more annotation...
  • As you can see, for organizations who need to create advanced analytics applications, R is integrated throughout the analytics stack: for data access, for presentation of results, and of course for the statistical analysis process itself. This degree of integration by so many companies is indicative of the level of demand for R throughout the enterprise. As the leading provider of commercial software and support for R, Revolution Analytics supports R users througout the organization,
    • LuCla EdPa
      LuCla EdPa on 29 Apr 13
       
      R está integrado en múltiples empresas y la demanda de su uso está aumentando conforme pasa el tiempo
LuCla EdPa

Statistical Computing with R: A tutorial - 0 views

math.illinoisstate.edu/...rtutor.html

shared by LuCla EdPa on 29 Apr 13 - Cached
  • R is a software package especially suitable for data analysis and graphical representation
  • is not particularly efficient in handling large data sets
    • LuCla EdPa
      LuCla EdPa on 29 Apr 13
       
      No es eficiente manejando bases de datos grandes
  • Students can quickly grasp the role of outliers and influential points in a simple linear regression
    • LuCla EdPa
      LuCla EdPa on 29 Apr 13
       
      Fácil manejo, se puede interactuar con expresiones simples
  • ...8 more annotations...
  • R can be used as an ordinary calculator
    • LuCla EdPa
      LuCla EdPa on 29 Apr 13
       
      Al igual que Matlab, puede usarse como una potente calculadora
  • > 2 + 3 * 5      # Note the order of operations. > log (10)       # Natural logarithm with base e=2.718282 > 4^2            # 4 raised to the second power > 3/2            # Division > sqrt (16)      # Square root > abs (3-7)      # Absolute value of 3-7 > pi             # The mysterious number > exp(2)         # exponential function > 15 %/% 4       # This is the integer divide operation > # This is a comment line
    • LuCla EdPa
      LuCla EdPa on 29 Apr 13
       
      Ejemplos
  • x<- log(2.843432) *pi
    • LuCla EdPa
      LuCla EdPa on 29 Apr 13
       
      Para fijar valores a variables, usamos '
  • R can handle complex numbers, too.
    • LuCla EdPa
      LuCla EdPa on 29 Apr 13
       
      También admite el uso de números complejos
  • Important note: since there are many built-in functions in R, make sure that the new object names you assign are not already used by the system. A simple way of checking this is to type in the name you want to use. If the system returns an error message telling you that such object is not found, it is safe to use the name. For example, c (for concatenate) is a built-in function used to combine elements so NEVER assign an object to c!
    • LuCla EdPa
      LuCla EdPa on 29 Apr 13
       
      Al igual que en los lenguajes de programación no puedes poner una variable con nombre de función, en R no puedes asignar una variable con nombre de objeto
  • Character vector:
    • LuCla EdPa
      LuCla EdPa on 29 Apr 13
       
      Vectores de caracteres
  • Note that m1*m2 is NOT the usual matrix multiplication. To do the matrix multiplication, you should use %*% operator instead
    • LuCla EdPa
      LuCla EdPa on 29 Apr 13
       
      Para multiplicar matrices, usamos %*%
  • 2.4 Finding roots: a simple example
    • LuCla EdPa
      LuCla EdPa on 29 Apr 13
       
      La información que ya hemos adquirido es suficiente para tener una idea del funcionamiento de R, omitimos el resto
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