Monthly Archives: October 2013

Financial Data Accessible from R

October 4, 2013
By
Financial Data Accessible from R

This post lists the sources and types of financial data that is accessible directly from R. I included here free and non free ressources. Obviously given the size and the activity of the R community this is work in constant progress. I might update thi...

Read more »

Post 1: A Bayesian 2PL IRT model

October 4, 2013
By
Post 1: A Bayesian 2PL IRT model

In this post, we define the Two-Parameter Logistic (2PL) IRT model, derive the complete conditionals that will form the basis of the sampler, and discuss our choice of prior specification. We can find the appropriate values of numerically in R … Continue reading →

Read more »

Post 0: Getting Started with R

October 4, 2013
By
Post 0: Getting Started with R

R is an interpreted programming language that makes it easy to think about statistics instead of thinking about programming. Unlike other programming languages, R is commonly used by typing commands one-at-a-time in an interactive session. RStudio is a program that … Continue reading →

Read more »

Dealing with a stochastic fitness function in GA package

October 4, 2013
By
Dealing with a stochastic fitness function in GA package

Guest post by Kim Man Lui, PhD. (about GA – an R package for optimization using genetic algorithms) The GA package (version 2.0) is a generic package in which one can define his/her own functions of fitness, selection, crossover and mutation. Among those functions, the most important is the fitness. However, in the GA package, the fitness function has...

Read more »

Questions on my online forecasting course

October 3, 2013
By

I’ve been getting emails asking questions about my upcoming course on Forecasting using R. Here are some answers. Do I need to use the Revolution Enterprise version of R, or can I use open-source R? Open source R is fine. Revolution Analytics is organizing the course, but there is no requirement to use their software. I will be using...

Read more »

The MakeR way: Using R to reify social media data via 3d printing

October 3, 2013
By
The MakeR way: Using R to reify social media data via 3d printing

If you’ve read any of my previous posts you know

Read more »

R and Data Week 2013

October 3, 2013
By
R and Data Week 2013

by Joseph Rickert Data Week 2013 is being held this week in sunny San Francisco at the Fort Mason conference center overlooking the Bay. Holding a Bay Area R User Group Meeting (BARUG) at Data Week helped to raise the R consciousness among the hip conference crowd attracted by the intoxicating mix of blue skies, big data hype, startups...

Read more »

Top 250 Movies at IMDb

October 2, 2013
By
Top 250 Movies at IMDb

Some years ago I allowed myself to accept a challenge to read the Top 100 Novels of All Time (complete list here). This list was put together by Richard Lacayo and Lev Grossman at Time Magazine. To start with I could tick off a number of books that I had already read. That left me with around 75

Read more »

Tomorrow: R+Hadoop Webinar with Cloudera and Revolution Analytics

October 2, 2013
By

If you haven't already registered, don't miss tomorrow's webinar presented by Cloudera's Director of Product Strategy, Jairam Ranganathan and Michele Chambers, Chief Strategy Officer at Revolution Analytics. This will be a great opportunity to learn how R and CDH (Cloudera's Hadoop distribution) work together with the forthcoming Revolution R Enterprise 7. Here's what they will be talking about: The...

Read more »

New JerseyR User Group Meeting – 22nd October 2013, Iselin NJ

October 2, 2013
By

We are pleased to announce details of the next New Jersey R meeting; this is a free event open to anyone using or interested in using R. Venue:  Hilton Woodbridge, 120 Wood Avenue South, Iselin, NJ 08830 Time:     6.30 pm – 10pm Presentations (from 7pm) • Using knitr to create reports –  Adam Rich, Beazley Group • Using R...

Read more »