Mirai Solutions GmbH (http://www.mirai-solutions.com) is pleased to announce the availability of XLConnect on github. Whether you want to browse the code or simply want access to the latest development version of XLConnect, visit us on github. XLConnect can be directly … Continue reading → [Read more...]

The interest in high frequency trading and models has grown exponentially in the last decade. While I have some doubts about the validity of any signals emerging from all the noise at higher and higher frequencies, I have nevertheless decided to look at the statistical modelling of intraday returns using ... [Read more...]

Welcome to Part 2 of the GeoCoding, R, and the Rolling Stones blog. Let’s apply some of the things we learned in Part 1 to a practical real world example. Mapping the Stones – A Real Example The Rolling Stones have toured for many years. You can go to Wikipedia and see ... [Read more...]

Some history and a prediction. Past A discussion broke out on the R-help mailing list in January 2006 about a technical report put out by the statistical computing group at UCLA.  The report in question talked mainly about SAS, SPSS and Stata.  It talked briefly — and not especially positively — about R.  ... [Read more...]

Michael Betancourt will be speaking at Google and at the University of California, Berkeley. The Google talk is closed to outsiders (but if you work at Google, you should go!); the Berkeley talk is open to all: Friday March 22, 12:10 pm, Evans Hall 1011. Title of talk: Stan: Practical Bayesian Inference with ... [Read more...]

Fifth Torino R net meeting on 11 Apr 2013, Campus Luigi Einaudi, Università degli Studi di Torino, will have three presentations Winning with R (and friends) – How data analysts affect the standings in sports championships, Massimilano Marchi, Regione Emilia-Romagna; Predictive … Continue reading → [Read more...]

I had the pleasure of being interviewed by Ajay Ohri from decisionstats.com earlier this week. Ajay is a great interviewer and writer and has extensive knowledge and experience on how R fits into the BI tool kit. His book R for Business Analytics (Springer, 2012) is a good read for ... [Read more...]

tl;dr: Play with the app here When you live in Paris, chances are you are (home or work) very close to a metro station, so when you want to meet with some friends, you usually end up picking another metro station as a meeting point. Yet, finding the optimal ... [Read more...]

Short: I plot the frequency of wikipedia searches of “Behavioral Economics”, and “Beer” – who knew the correlation would be 0.7! Data reference:Data on any wikipedia searches (back to 2007) are available at http://glimmer.rstudio.com/pssguy/wikiSearchRates/. The website allows you to download frequency hits per day as a csv, ... [Read more...]

My research has allowed me to implement techniques for visualizing multivariate models in R and I wanted to share some additional techniques I’ve developed, in addition to my previous post. For example, I think a primary obstacle towards developing a useful neural network model is an under-appreciation of the ... [Read more...]

Below are my findings from the second data analysis project in Dr. Jeffery Leek’s John Hopkins Coursera class. Introduction I used the  “Human Activity Recognition Using Smartphones Dataset” (UCI, 2013) to build a model. This data  was recorded from a Samsung prototype smartphone with a built-in accelerometer. The purpose of ... [Read more...]

by Robert A. Muenchen I’m slowly gathering all the data needed to update my ongoing article, The Popularity of Data Analysis Software. The section below is the latest installment. Growth in Capability The capability of all the software in this … Continue reading → [Read more...]

This post serves three function: It allows me to revisit an old blogpost It let's me test out the new-ish knitr function knti2wp and RWordPress It enables me to avoid the massive ammount of reading I need to do and … Continue reading → [Read more...]

A great. recent enhancement for the Shiny App is the ability to upload local files. Now, in addition to users being able to interact with data provided on the host e.g. Soccer Tables or via the web, Wikipedia Search Rates they can use apps to view and analyse their ... [Read more...]

Elemento Lab at Weill Cornell Medical College organized a workshop on Epigenomics. I had the opportunity to give a tutorial on DNA methylation analysis in R. The tutorial demonstrates how to analyze high-throughput bisulfite sequencing d... [Read more...]

by Thomas Dinsmore Last week, Revolution Analytics released the Limited Availability edition of Revolution R Enterprise Release 6.2. Interest in this new release is high, and we're very pleased with user response. Over the next several weeks, I will share more detailed information about the capabilities included in this new release. ... [Read more...]

Your browser does not support iframes. [Read more...]

Third part on logistic regression (first here, second here). Two steps in assessing the fit of the model: first is to determine if the model fits using summary measures of goodness of fit or by assessing the predictive ability of the model; second is to deterime if there’s any ... [Read more...]

I came across a little problem while dealing with a vector in R which had one of the most simple solutions. These are, in my opinion, the most annoying problems with the most simple and commonsensical solution. Anyways, yet again Utkarsh comes to rescu... [Read more...]

Solution: use your ~/.my/cnfInside your ~/.my.cnf file define the connection parameters to your databases. For example, here I define two groups called local and toto:[local]user = rootpassword = ultra_secrethost = localhost[toto]user = capitaine_flamp... [Read more...]