5028 search results for "git"

What makes us happy? Lets look at data to find out.

November 13, 2013
By
What makes us happy? Lets look at data to find out.

I've had a lot of different jobs over the past 4 years, and I've had some incredible experiences along the way. Lately, I've been struggling with what to do next. Or perhaps more accurately, I've been struggling with how to decide what to do next. Deci...

Read more »

Workshop and Talk Slides from NEAIR Conference

November 12, 2013
By

I am about to head home from my fifth time attending the North East Association for Institutional Research (NEAIR), this year in Newport, RI, which was just fantastic. Really great people, interesting talks, and good food. I again taught an Introduction to R and LaTeX for Institutional Research pre-conference workshop and also gave a talk on Propensity Score...

Read more »

googleVis 0.4.7 with RStudio integration on CRAN

November 12, 2013
By
googleVis 0.4.7 with RStudio integration on CRAN

In my previous post, I presented a preview version of googleVis that provided an integration with RStudio's Viewer pane (introduced with version 0.98.441).Over 80% in my little survey favoured the new default output mechanism of googleVis within RStudi...

Read more »

Running Back-tests in parallel

November 11, 2013
By
Running Back-tests in parallel

Once you start experimenting with many different asset allocation algorithms, the computation time of running the back-tests can be substantial. One simple way to solve the computation time problem is to run the back-tests in parallel. I.e. if the asset allocation algorithm does not use the prior period holdings to make decision about current allocation,

Read more »

Merge Relational Dataframes

November 11, 2013
By
Merge Relational Dataframes

A Question Recently, a student, working on her Senior Thesis at Northland College, asked me the following question: Attached is an Excel file with three “important to R” worksheets. The only thing that connects all 3 worksheets is the Lift.ID … Continue reading →

Read more »

Imperialstan

November 11, 2013
By
Imperialstan

Despite the map here, I'm not going to talk about yet another fraction of the former Soviet Empire which is taken the form of a people's republic, possibly with witty British Ambassadors.In fact, I'm going to talk about the Stan workshop that I have be...

Read more »

Quick tip on controlling log output in tests

November 11, 2013
By
Quick tip on controlling log output in tests

When running tests for a package, it’s important that the console output is unadulterated since test results are printed with …Continue reading »

Read more »

cMDS: visualising changing distances

November 11, 2013
By
cMDS: visualising changing distances

Gina Gruenhage has just arxived a new paper describing an algorithm we call cMDS. Here’s what it’s for: if you do any kind of data analysis you often find yourself comparing datapoints using some kind of distance metric. All’s well if you have a unique reasonable distance metric you can use, but often what you

Read more »

Extracting standard errors and treatment effects from medical journal tables (powered by R)

November 10, 2013
By
Extracting standard errors and treatment effects from medical journal tables (powered by R)

I decided to start blogging the R code used for some of my statistical posts, so I will start with the meta-analysis posts and move on to more difficult stuff. As stated previously (here and here) the problem is to convert the reported relative risks(RR, ), 95% confidence interval () and p-value () into estimates

Read more »

What’s in my Pocket? (Part II) – Analysis of Pocket App Article Tagging

November 10, 2013
By
What’s in my Pocket? (Part II) – Analysis of Pocket App Article Tagging

IntroductionYou know what's still awesome? Pocket.As I noted in an earlier post (oh god, was that really more than a year ago?!) I started using the Pocket application, previously known as Read It Later, in July of 2011 and it has changed my readi...

Read more »