May 2015

First Day Highlights from the Extremely Large Databases Conference

May 21, 2015 | 0 Comments

by Joseph Rickert The 8th XLDB (Extremely Large Databases) Conference open at Stanford on Tuesday with an outstanding program. This conference has been providing leadership in the "Big Data" world since its first workshop which was held in 2007. For example, the summary report for that year notes: "Both communities (industry ... [Read more...]

Introductory Point Pattern Analysis of Open Crime Data in London

May 21, 2015 | 0 Comments

IntroductionPolice in Britain (http://data.police.uk/) not only register every single crime they encounter, and include coordinates, but also distribute their data free on the web.They have two ways of distributing data: the first is through an API, which is extremely easy to use but returns only a ... [Read more...]

Making R your own: Scripting & Tweeting

May 21, 2015 | 0 Comments

Previously I have spoke on the merits of the R programing language (here) and alluded to its place in my research (here)(1)I also showed how I used it with some of my excursions into Computational Fluid Dynamics here and previously here. , so today I thought it was about time ... [Read more...]

Course on using Oracle R Enterprise

May 21, 2015 | 0 Comments

BNOSAC will be giving from June 08 up to June 12 a 5-day crash course on the use of R using Oracle R Enterprise. The course is given together with our Oracle Partner in Leuven, Belgium. If you are interested in attending, contact us for further details. For R users who aren't ... [Read more...]

RInside 0.2.13

May 20, 2015 | 0 Comments

A new release 0.2.13 of RInside is now on CRAN. RInside provides a set of convenience classes which facilitate embedding of R inside of C++ applications and programs, using the classes and functions provided by Rcpp. This release works around a bug i... [Read more...]

Open soure software has changed the way we do business

May 20, 2015 | 0 Comments

Earlier this month TechCrunch published an article of mine, "The Business Economics And Opportunity Of Open-Source Data Science". With this article I wanted to share how open-source software has disrupted the economics of doing business, now that data is a fundamental component of every businesses' operations. Open source projects like ... [Read more...]

Are Canadian newspapers painting false pictures with data?

May 20, 2015 | 0 Comments

The Canadian newspaper, Globe and Mail, is a leader in diction and style, but it may need improvement in the ‘grammar of graphics’.Globe’s recent depiction of metropolitan economic growth in the series Off the Charts was way off the mark. The chart plotted the current and forecasted GDP ... [Read more...]

First Steps with Structural Equation Modeling

May 20, 2015 | 0 Comments

Last Friday at the Davis R Users’ Group, Grace Charles gave a presentation on structural equation modeling in R using the Lavaan package. Here’s the video and her slides. We’ve also posted Grace’s script from the presentation as a gist here. More resources that Grace mentioned in ... [Read more...]

Databases – an Ideal Application for R6?

May 20, 2015 | 0 Comments

Over the years I have tried to simplify and streamline my access to financial historic data. All different solutions I tried (see here, for example) so far have been unsatisfactory, at least to some degree. That however changed after I started using R6. Here is an example of using the ... [Read more...]

More postdoctoral opportunities at IARC

May 20, 2015 | 0 Comments

If you want to want to work with R and JAGS on a hard multivariate measurement error problem in nutritional epidemiology, then take a look at this advert. http://www.iarc.fr/en/vacancies/postdoc/postdoc_NEP_June2015.pdf IARC is based in Lyon, France. For informal queries approach me … ...
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Clusters Powerful Enough to Generate Their Own Subspaces

May 20, 2015 | 0 Comments

Cluster are groupings that have no external label. We start with entities described by a set of measurements but no rule for sorting them by type. Mixture modeling makes this point explicit with its equation showing how each measurement is an independe... [Read more...]

Database interfaces

May 20, 2015 | 0 Comments

There are many different databases. The most familiar are row-column SQL databases like MySQL, SQLite, or PostgreSQL. Another type of database is the key-value store, which as a concept is very simple: you save a value specified by a key, and you can retrieve a value by its key. One ... [Read more...]

Fast parallel computing with Intel Phi coprocessors

May 19, 2015 | 0 Comments

by Andrew Ekstrom Recovering physicist, applied mathematician and graduate student in applied Stats and systems engineering We know that R is a great system for performing statistical analysis. The price is quite nice too ;-) . As a graduate student, I need a cheap replacement for Matlab and/or Maple. Well, ... [Read more...]

TidyR Challenge: Data.Table Solution

May 19, 2015 | 0 Comments

Arun Srinivasan is the man! Once he saw that his data.table solution to the TidyR Challenge had an issue, he fixed it! His solution is below along with a quick equivalence test to my original solution, and check out this stackOverflow question for a... [Read more...]
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