Monthly Archives: April 2014

Example of linear regression and regularization in R

April 28, 2014
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When getting started in machine learning, it's often helpful to see a worked example of a real-world problem from start to finish. But it can be hard to find an example with the "right" level of complexity for a novice. Here's what I look for: uses r...

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RStudio and X2Go

April 28, 2014
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After a recent system upgrade (to Linux Mint LMDE), I was no longer able to run RStudio through the remote desktop application X2Go. It turns out that this is due to a problem with the Qt libraries (see this website). As suggested here, I just deleted...

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Introducing the pathological package for manipulating paths, files and directories

April 28, 2014
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Introducing the pathological package for manipulating paths, files and directories

I was recently hunting for a function that will strip the extension from a file – changing foo.png to foo, and so forth. I was knitting a report, and wanted to replace the file extension of the input with the extension of the the output file. (knitr handles this automatically in most cases but I

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useR!2014 at UCLA is open for registration

April 28, 2014
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useR!2014 at UCLA is open for registration

The Organizing Committee of userR!2014 at UCLA, to be held June 30th through July 3rd, is pleased to announce the opening of registration on its website:  user2014.stat.ucla.edu Discounted prices for early registration are effective through 5/10/14, after which regular registration prices will be in place. The specific program schedule will be announced very soon, so do please check back...

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ggplot with a highcharts taste

ggplot with a highcharts taste

At work I use ggplot2 almost for everything. I really like the mid term between high level (highcharts) and low-level (like d3 for example). The deafult theme for ggplot it's good, and really good if you compare with the old looking R base graphics, and there is more: the ggthemes package which have some themes for ggplot objects....

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A world map of R user activity

April 28, 2014
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A world map of R user activity

R easily has more than two million users around the world, but where is R activity the most concentrated? That's the question that the team of R users at Rapporter seeks to answer, by combining data about locations of R Foundation members, package authors, package downloaders, and user group members into a single, country-wide "R usage score". Those R...

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The new look of learning R

April 28, 2014
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The new look of learning R

Now that we have reached the milestone of 30,000 (!) enthusiastic R students, and the DataCamp platform is paving its way into academics and professional organizations, we felt it was time to take our design to a higher level. So as of this week, your favourite free learning platform for R tutorials and data science will have a totally new look and feel!

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Hazardous and Benign Space Objects: Getting the Data

April 28, 2014
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Hazardous and Benign Space Objects: Getting the Data

The recent story about a skydiver nearly being hit by falling meteor got me thinking about all the pieces of rock floating around in near-Earth space. Despite the fact that the supposed meteor was probably just a chunk of rock mistakenly packed in with a parachute, the fact that something like that could actually happen

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Restriction digestion of eukaryotic genomes in R

April 28, 2014
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Restriction digestion of eukaryotic genomes in R

There are multiple desktop tools (Bioedit, Emboss, various basic bioinformatic tools) and browser based tools (NEBcutter, biotools, In silico restriction digestion and various other tools) available for performing restriction digestion of smaller proka...

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What Can Go Wrong: My Favorite Example

April 28, 2014
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What Can Go Wrong:  My Favorite Example

I’m one of many who bemoan the fact that statistics is typically thought of as — alas, even taught as — a set of formula plugging methods. One enters one’s data, turns the key, and the proper answers pop out. This of course is not the case at all, and arguably statistics is as much

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