July 2013

Real-Time Big Data Analytics: Emerging Architecture

July 19, 2013 | David Smith

O'Reilly Media has published a new whitepaper, Real-Time Big Data Analytics: Emerging Architecture. This 32-page document describes the processes and components necessary for getting on-demand information from big-data stores such as Hadoop. It answers the questions "How fast is fast?" and "How real is real-time?" and "how big is big?", ... [Read more...]

Using R and Shiny to create “Art”

July 19, 2013 | Ram

One big strength of packages like shiny is the ability to easily vary parameters and view the results, especially in plots.So here’s a small shiny app that I created to learn about reactivity, while also having fun.The idea is simple. Vary many aspects of geom_segments in ... [Read more...]

Oracle R Connector for Hadoop 2.2.0 released

July 19, 2013 | mhornick

Oracle R Connector for Hadoop 2.2.0 is now available for download. The Oracle R Connector for Hadoop 2.x series has introduced numerous enhancements, which are highlighted in this article and summarized as follows:  ORCH 2.0.0  ORCH 2.1.0  ORCH 2.2.0  Analytic Functions orch.lm orch.lmf orch.neural orch.nmf Oracle Loader for Hadoop (OLH) ... [Read more...]

Create SQL Rules from rpart model

July 19, 2013 | Tomáš Greif

Mapping output of rpart tree to SQL statements is not easy. In rpart package you have to print out rules and then manually write SQL CASE statement. Fortunately, we can write new function to do this job. To test the function, I will use dataset german... [Read more...]

Comrades Marathon Inference Trees

July 19, 2013 | andrew

Following up on my previous posts regarding the results of the Comrades Marathon, I was planning on putting together a set of models which would predict likelihood to finish and probable finishing time. Along the way I got distracted by something else that is just as interesting and which produces ... [Read more...]

Stochastic Oscillator

July 18, 2013 | systematicinvestor

I came across the link to the John Ehlers paper: Predictive Indicators for Effective Trading Strategies, while reading the Dekalog Blog. John Ehlers offers a different way to smooth prices and incorporate the new filter into the oscillator construction. Fortunately, the EasyLanguage code was also provided and i was able ... [Read more...]

R spells for data wizards

July 18, 2013 | David Smith

Thomas Levine has put together a handy list of "data spells" for R: all of those cool, slightly hacky ways of getting things done with R that you might not come across in the standard documentation. Check out the link below for handy hints o... [Read more...]

Fair weather fans? (An R scatter plot matrix)

July 18, 2013 | Martin Monkman

The Victoria HarbourCats are roughly half way through their inaugural season in the West Coast League, and currently lead the league in average attendance.  In a recent conversation with one of the team's staff, he mentioned that after the first game in early June, the fans started to come out ... [Read more...]

Simple and Advanced Time series with Oracle R Enterprise

July 18, 2013 | mhornick

v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} This guest post from Marcos Arancibia describes how to use Oracle R Enterprise to analyze Time Series data. In this article, we give an overview of how to use Time ...
[Read more...]

Lilac Bloomsday Run in Graphs

July 17, 2013 | Vivek Patil

The Lilac Bloomsday Run is a 7.46 miles (12 kms) race held annually in Spokane, Washington. The run was started in 1977 by Don Kardong and it saw 51,613 people register for it in 2013. In this post, I use R to collect data from their website, clean and... [Read more...]

9th IMACS seminar on Monte Carlo Methods, Annecy

July 17, 2013 | xi'an

As astute ‘Og’s readers may have gathered (!), I am now in Annecy, Savoie, for the 9th IMACS seminar on Monte Carlo Methods. Where I was kindly invited to give a talk on ABC. IMACS stands for “International Association for Mathematics and Computers in Simulation” and the conference gathers themes ... [Read more...]

All My Roads Lead Back to Finance–PIMCO Sankey

July 17, 2013 | klr

Even though the route might be circuitous, my seemingly random journeys all seem to lead back to finance.  My fun with rCharts sankey diagrams (Exploring Networks with Sankey) has led me into an exploration of the PIMCO network.  Although PIMCO is best known for its fixed income products, PIMCO has ... [Read more...]
1 4 5 6 7 8 13

Never miss an update!
Subscribe to R-bloggers to receive
e-mails with the latest R posts.
(You will not see this message again.)

Click here to close (This popup will not appear again)