2014

Instagram a Termoli (CB)

November 28, 2014 | Salvino A. Salvaggio

div__Salvino A. Salvaggio, PhDSe Facebook, WhatsApp, Viber, Twitter e SnapChat —per citarne solo alcuni— fanno integralmente parte della vita quotidiana di giovani e meno giovani, non sono gli unici social networks sul mercato. Instagram, per esempio, e' stato adottato in massa perché consente di condividere facilmente su Internet foto ... [Read more...]

Le Monde puzzle [#887quater]

November 27, 2014 | xi'an

And yet another resolution of this combinatorics Le Monde mathematical puzzle: that puzzle puzzled many more people than usual! This solution is by Marco F, using a travelling salesman representation and existing TSP software. N is a golden number if the sequence {1,2,…,N} can be reordered so that the sum ...
[Read more...]

Mango Movember

November 27, 2014 | Mango Solutions Shop

This month the Mango Movember team have done a fantastic job of growing the most impressive moustaches. All cash raised is for research and awareness of, prostate cancer, testicular cancer and mental health problems. You can sponsor them using the following link: … Continue reading → [Read more...]

Eggnog for Thanksgiving

November 27, 2014 | David Smith

It's Thanksgiving Day here in the US, so we're taking the day off to spend some time with our families and to eat far too much food. If you're in the US or celebrating Thanksgiving elsewhere, enjoy the day! And for everyone in this season of joy, here's a handy ... [Read more...]

New Australian data on the HMD

November 26, 2014 | Rob J Hyndman

The Human Mortality Database is a wonderful resource for anyone interested in demographic data. It is a carefully curated collection of high quality deaths and population data from 37 countries, all in a consistent format with consistent definitions. I have used it many times and never cease to be amazed at ... [Read more...]

How About a “Snowdoop” Package?

November 26, 2014 | matloff

Along with all the hoopla on Big Data in recent years came a lot of hype on Hadoop.  This eventually spread to the R world, with sophisticated packages being developed such as rmr to run on top of Hadoop. Hadoop made it convenient to process data in very large distributed ... [Read more...]

Tips and Tricks for Getting Started with R

November 26, 2014 | Joshua Rosenberg

All statistical software have a learning curve, and compared to SPSS, R has taken me more time to learn the basics. However, since learning the basics, R seems easier to use than SPSS. Here are 10 tips and tricks (and some resources) I found helpful for getting started with R: Use ... [Read more...]

Confidence vs. Credibility Intervals

November 26, 2014 | arthur charpentier

Tomorrow, for the final lecture of the Mathematical Statistics course, I will try to illustrate - using Monte Carlo simulations - the difference between classical statistics, and the Bayesien approach. The (simple) way I see it is the following, for frequentists, a probability is a measure of the the frequency ... [Read more...]

The beautiful R charts in London: The Information Capital

November 26, 2014 | David Smith

If you've lived in or simply love London, a wonderful new book for your coffee-table is London: The Information Capital. In 100 beautifully-rendered charts, the book explores the data that underlies the city and its residents. To create most of these charts, geographer James Cheshire and designer Oliver Uberti relied on ... [Read more...]

Extracting NOAA sea surface temperatures with ncdf4

November 25, 2014 | Luke Miller

I’ve written previously about some example R scripts I created to extract sea surface temperature data from NOAA’s Optimum Interpolated Sea Surface Temperature products. If you want daily global sea surface temperatures on a 0.25×0.25° grid, they gather those into 1-year files available at http://www.esrl.noaa.gov/... [Read more...]

The gridGraphics Package (2014-03)

November 25, 2014 | pmur002

The gridGraphics package provides a function, grid.echo(), that can be used to convert a plot drawn with the graphics package to the same result drawn using grid. This provides access to a variety of grid tools for making customisations and … Continue reading → [Read more...]
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