In my presentation to the Strata Santa Clara 2013 conference earlier this year, my goal was to give a succinct (under 20 minutes!) explanation of three terms that are two often used as mere buzzwords: predictive analytics, real time, and big data. You can download the slides for my presentation, Real-time Big Data Analytics: From Deployment to Production, from...
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Creating a QGIS-Style (qml-file) with an R-Script
How to get from a txt-file with short names and labels to a QGIS-Style (qml-file)?
I used the below R-script to create a style for this legend table where I copy-pasted the parts I needed to a txt-file, like for the WRB-FULL (WRB-FULL: Full soil code of the STU from the World Reference Base for Soil Resources). The...
Google Analytics + R = FUN!
The scope of this post it to show how simple it is to get data out of the Google Analytics and create your own reports (that you hope that they can be semi-automated at least) and you favourite statistical graphs (those that GA is currently missing). As you already know R is a favourite tool ...read more
R/Finance 2013 Is Coming Quickly…
There is about two weeks remaining until R/Finance 2013 - being held on May 17th and 18th at UIC in Chicago. Make sure you register beforehand to ensure you have a spot, and – yes - you do want to come to the conference dinner on Friday. I am particularly excited about the lineup of keynotes 
Simulation shows gain of clmm over ANOVA is small
After last post's setting up for a simulation, it is now time to look how the models compare. To my disappointment with my simple simulations of assessors behavior the gain is minimal. Unfortunately, the simulation took much more time than I ...
TV shows rated by episode as a Shiny App
A few days ago there was an interesting R based article by diffuseprior on the decline and fall in the quality of The Simpsons The author scraped results from GEOS, an online survey of TV programs, and applied the R package changepoint to offer an analysis of the show over time This seemed a candidate aaaa
Do Torontonians Want a New Casino? Survey Analysis Part 1
Toronto City Council is in the midst of a very lengthy process of considering whether or not to allow the OLG to build of a new casino in Toronto, and where. The process started in November of 2012, and set … Continue reading →
Cut Dates Into Quarters
Frequently I need to recode a date column to quarters. For example, at Excelsior College we have continuous enrollment so we report new enrollments per quarter. To complicate things a bit, our fiscal year starts in July so that July, August, and September represent the first quarter, January, February, and March are actually the third quarter. But sometimes...
A pathological glm() problem that doesn’t issue a warning
I know I have already written a lot about technicalities in logistic regression (see for example: How robust is logistic regression? and Newton-Raphson can compute an average). But I just ran into a simple case where R‘s glm() implementation of logistic regression seems to fail without issuing a warning message. Yes the data is a
SAS Big Data Analytics Benchmark (Part One)
by Thomas Dinsmore On April 26, SAS published on its website an undated Technical Paper entitled Big Data Analytics: Benchmarking SAS, R and Mahout. In the paper, the authors (Allison J. Ames, Ralph Abbey and Wayne Thompson) describe a recent project to compare model quality, product completeness and ease of use for two SAS products together with open source...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
