The Enron email dataset, collected during the FERC investigation of the Enron financial scandal, represents the largest publicly available set of emails. This makes theman ideal testbed for sentiment analysis algorithms. Ikanow's Andrew Strite used the open-source Infinit.e framework and a Hadoop cluster to generate sentiment scores for all of the Enron emails, and then used R to manipulate...
R posts in other languages
- (line.)profiling mit Rprof + R.3.x – Performance von R-Skripten optimieren
- Operating on files with R: copy and rename
- 适合初学者的R语言教程
- SAS hat einen neuen Vergleich von SAS und R veröffentlicht
- 实现可重复的统计slides
- О связи между “утечкой мозгов” и объемом пассажирских перевозок
- Новая книга по основам прогнозирования (с использованием R)
- Двухфакторный дисперсионный анализ
- Revolution R Enterprise 6.2 mit neuen Funktionen für hoch performante Analysen auf Big Data
- Third Milano R net meeting: leave a comment
Down and Dirty Forecasting: Part 2
This is the second part of the forecasting exercise, where I am looking at a multiple regression. To keep it simple I chose the states that boarder WI and...
What is probabilistic truth? Part 2 – Everything is conditional
Read Part 1 When making a statement of the form “1/2 is the correct probability that this coin will land tails”, there are a few things which are left...
Down and Dirty Forecasting: Part 1
I wanted to see what I could do in a hurry using the commands found at Forecasting: Principles and Practice . I chose a simple enough data set of Wisconsin Unemployment...
Shiny + Concerto = YES !!!
So I have finally gotten beta access to the two most powerful R controlled web application makers in existence and produced very exciting experimental productsA few posts ago I posted...
7th R/Rmetrics workshop in Switzerland, June 30-July 4
The 7th annual R/Rmetrics Workshop om Computational Finance and Financial Engineering will take place June 30-July 4 in the beatiful alpine setting of Lake Thune, Switzerland. This is an...
Highlights of the Milwaukee Workshop on R and Bioinformatics
by Joseph Rickert On May 10th and 11th, in honor of this being the International Year of Statistics, the Milwaukee Chapter of the American Statistical Association (MILWASA) held a...
Veterinary Epidemiologic Research: Modelling Survival Data – Non-Parametric Analyses
Next topic from Veterinary Epidemiologic Research: chapter 19, modelling survival data. We start with non-parametric analyses where we make no assumptions about either the distribution of survival times or...
Generating a Markov chain vs. computing the transition matrix
A couple of days ago, we had a quick chat on Karl Broman‘s blog, about snakes and ladders (see http://kbroman.wordpress.com/…) with Karl and Corey (see http://bayesianbiologist.com/….), and the use of...
The R-Podcast Episode 13: Interview with Yihui Xie
It’s an episode of firsts on the R-Podcast! In this episode recorded on location I had the honor and privilege of interviewing Yihui Xie, author of many innovative packages...
Vote in the KDnuggets poll on Analytics Software
The 14th annual KDnuggets poll measuring use of analytics software is open for voting. The poll asks, "What Predictive Analytics, Big Data, Data mining, Data Science software you used...
How Important is Variable Selection?
Very. If you have 10 possible independent regressors, and none of which matter, you have a good chance to find at least one is important. A good chance being...
Operating on files with R: copy and rename
Nowadays, routinary operations on files, such as renaming or copying, are performed with some mouse clicks. Sometimes, it is useful perform this operations in batch. Linux users perform this...
What happened to six million voters?
The recent elections in Pakistan on May 11 were a great success by all means. In spite of the threats for violence by Al-Qaeda and its local franchises in...
My Prime Sieve – Homage to Yitan Zhang
# As a homage to Yitang Zhang who has proven a mind-bending property of Prime Pairs, I have written a prime Sieve to detect all of the prime numbers from...
Video: R, ProjectTemplate, RStudio and GitHub: Automate the boring bits and get on with the fun stuff
This post shares the video from the talk presented on 15th May 2013 by Dr Kendra Vant on ProjectTemplate, github and Rstudio at Melbourne R Users. Overview: Want to...
Get your questions answered about Open Data
The OpenData StackExchange site has just launched in beta, and looks to be a great resource for open data sources. Like StackOverflow for programming and CrossValidated for statistics, OpenData...
Getting to the point – an alternative to the bezier arrow
(This article was first published on G-Forge » R, and kindly contributed to R-bloggers) An alternative bezier arrow to the regular grid-bezier. Apart from a cool gradient it has...
Spatial correlograms in R: a mini overview
Spatial correlograms are great to examine patterns of spatial autocorrelation in your data or model residuals. They show how correlated are pairs of spatial observations when you increase the...
Slide: one function for lag/lead variables in data frames, including time-series cross-sectional data
I often want to quickly create a lag or lead variable in an R data frame. Sometimes I also want to create the lag or lead variable for different...
An R debugging example
The steps taken to fix an R problem. Task To prepare for the Portfolio Probe blog post called “Implied alpha and minimum variance”, I tried to update a matrix...
R programming challenge: Escape the zombie horde
So when the world is taken over by a Zombie horde, you're going to want to figure out a way to get the human population to safety. This R...
Solving Multiple Supplier Selection Problem using R and LP Solve
(This article was first published on Enterprise Software Doesn't Have to Suck, and kindly contributed to R-bloggers) To leave a comment for the author, please follow the link and...
R 3.0.1 is released
R 3.0.1 (codename “Good Sport”) was released last week. As mentioned earlier by David, this version improves serialization performance with big objects, improves reliability for parallel programming and fixes...
Non-Verbal Reasoning Test – Concerto
I have just released my first complete test of non-verbal problem solving skills. It is run on Concerto (an R-based application development platform targeted at primarily test developers) Try...
More on Chutes & Ladders
Matt Maenner asked about the sawtooth pattern in the figure in my last post on Chutes & Ladders. Damn you, Matt! I thought I was done with this. Don’t...
Model fitting exam problem
Recently I have run an exam where the following question had risen many problems for students (here I give its shortened formulation). You are given the data generating process...
qdap 0.2.2 released
I’m very pleased to announce the release of qdap 0.2.2 This is the third installment of the qdap package available at CRAN. The qdap package automates many of the...
Implied alpha and minimum variance
Under the covers of strange bedfellows. Previously The idea of implied alpha was introduced in “Implied alpha — almost wordless”. In a comment to that post Jeff noticed that...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
