What is Random?
As previously discussed, there’s no universal measure of
implies the lack of pattern and the inability to predict future outcomes.
However, The lack of an obvious model doesn’t imply randomness anymore than a
curve fit one implies order. So what actually constitutes randomness, how can we
quantify it, and why do we care?
Randomness $\neq$ Volatility, and Predictability $\neq$ Profit
A new version of Rcpp is now
on the CRAN network for
binaries for Debian have been uploaded
Once more, this release brings a large number of exciting changes to
Rcpp. Some concern
usability, some bring new features, some increase pe...
A series of tutorials, in R, by Anthony Damico. As claimed on http://twotorials.com/, “how to do stuff in r. two minutes or less, for those of us who prefer to learn by watching and listening“. So far, 000 what is r? the lingua statistica, s’il vous plaît 001 how to download and install r 002 simple shortcuts for the windows r...
I was reviewing RSS feeds when I came across this story about “ObamaCare Employer Mandate: A List Of Cuts To Work Hours, Jobs” over on Investors.com. Efficacy of the law notwithstanding, I thought it might be interesting to visualize the data since the folks over at Investors.com provided a handy spreadsheet that they seem to
R 3.0.2 (codename “Frisbee Sailing”) was released yesterday. The full list of new features and bug fixes is provided below. Also, RStudio v0.98 (in a “secret” preview) was announced two days ago with MANY new features, including: Amazing new debugging …Read more »
Construire un moteur de rechercheOn va montrer comment on peut construire un moteur de recommandation simple en utilisant les outils de Textmining. Cette construction se fera en deux temps :
On construit un moteur de recherche pour identifier par exemple, dans...
With another NFL week down we are starting to see separation from the contenders and the “better luck next year” teams. Any paid TV mouthpiece worth their salt will tell you it is a quarterback driven league. Driven indeed. In the last post, I dabbled in the simple code of a correlation heat map. Now, I realize I may...
Here is an analysis and some graphics using googleVis on high school graduation rates in the United States.
A report from the US Deparment of Education on increasing high school graduation rates was published earlier this year (Jan 2013) and some summary graphics were shown on the Department’s blog (http://www.ed.gov/blog/2013/01/high-school-graduation-rate-at-highest-level-in-three-decades). However, the above blog only shows one static...
In my recent projects, I had the opportunity to work with the professor Raphaël Proulx who introduced me to several metrics commonly used in landscape ecology for quantifying image texture. In order to make my life easier, I decided to implement...
When working with intraday data, analysts are often facing a large dataset problem. R is well equipped to deal with this but the standard approach has to be modified in some ways. Large dataset means different things to different people. I’m talking here about a dataset of less than 10 columns and 2 to 5