5216 search results for "git"

Dave Giles on "MCMC for Econometrics Students"

April 29, 2014
By
Dave Giles on "MCMC for Econometrics Students"

In an excellent four part series of posts in March, Dave Giles introduces Markov Chain Monte Carlo (MCMC) and Gibbs samplers.  In these posts he gives a cogent explanation for the reasoning and mechanics involved in this branch of econometrics/sta...

Read more »

On the trade history and dynamics of NBA teams

April 28, 2014
By
On the trade history and dynamics of NBA teams

While good draft picks and deft management can help you win championships, there is no doubt that NBA teams can massively gain, or lose, by trading players with one another. Here, I played around with some publicly available data given at basketball-reference.com, and had a look at the numbers behind all trades undertaken in the NBA from 1948 to

Read more »

Example of linear regression and regularization in R

April 28, 2014
By

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...

Read more »

Introducing the pathological package for manipulating paths, files and directories

April 28, 2014
By
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

Read more »

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....

Read more »

The new look of learning R

April 28, 2014
By
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!

Read more »

Hazardous and Benign Space Objects: Getting the Data

April 28, 2014
By
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

Read more »

Restriction digestion of eukaryotic genomes in R

April 28, 2014
By
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...

Read more »

Calendar Strategy: Month End

April 27, 2014
By
Calendar Strategy: Month End

Calendar Strategy is a very simple strategy that buys an sells at the predetermined days, known in advance. Today I want to show how we can easily investigate performance at and around Month End days. First let’s load historical prices for SPY from Yahoo Fiance and compute SPY perfromance at the month-ends. I.e. strategy will

Read more »

What If You Dig A Hole Through The Earth?

April 26, 2014
By
What If You Dig A Hole Through The Earth?

It suddenly struck me that that tiny pea, pretty and blue, was the Earth. I put up my thumb and shut one eye, and my thumb blotted out the planet Earth. I didn’t feel like a giant. I felt very, very small (Neil Armstrong) Where would you come out if you dig a hole straight

Read more »