705 search results for "sql"

Creating an Open Source Revolution in Computational Proteomics

October 24, 2013
By
Creating an Open Source Revolution in Computational Proteomics

First of all, I don’t want to discuss in this post about Open-Source, its strengths & strengths. This post is about the most useful Open-Source packages, frameworks or libraries in the field of computational proteomics (a short version of our manuscript “Open source libraries and frameworks for Mass Spectrometry based Proteomics: A developer’s perspective”). 

Read more »

My experience of learning R – from basic graphs to performance tuning

October 23, 2013
By
My experience of learning R – from basic graphs to performance tuning

BackgroundR as some of you may know is a statistical and graphics programming language (see Wikipedia ) used by academia and recently by IT professionals of our ever growing software industry. There is a sudden demand for Data Scientists, Data Analysts and Statisticians with a background in R among other things data and development related subjects. I have...

Read more »

Build your own Twitter Archive and Analyzing Infrastructure with MongoDB, Java and R [Part 1] [Update]

October 22, 2013
By
Build your own Twitter Archive and Analyzing Infrastructure with MongoDB, Java and R [Part 1] [Update]

UPDATE: The JAVA script is now also available with the streaming API. You can find the script on my github account Hey everybody, you sure know the problems which appear when you want to work with the Twitter API. Twitter created a lot of different restrictions minimizing the fun of the Data Mining process. Another …

Read more »

analyze the national vital statistics system (nvss) with r and monetdb

October 21, 2013
By

ever since the dawn of the internet, the centers for disease control and prevention (cdc) has maintained a big data archive called the national vital statistics system (nvss).  the hardworking quants in hyattsville release two major annual microda...

Read more »

The ACM 2013 Mining Big Data Camp and "Un-Conference"

October 17, 2013
By
The ACM 2013 Mining Big Data Camp and "Un-Conference"

by Joseph Rickert The 2013 Mining Big Data Camp was held last Saturday at Ebay’s Town Hall Conference Center in San Jose. The San Francisco chapter of the ACM has been sponsoring this data mining themed, “un-conference” event since 2009. Attendance, this year was lighter than I remembered in the past, however, the event continues to be a viable...

Read more »

A Bayesian Model for a Function Increasing by Chi-Squared Jumps (in Stan)

October 16, 2013
By
A Bayesian Model for a Function Increasing by Chi-Squared Jumps (in Stan)

(This article was first published on David Chudzicki's Blog, and kindly contributed to R-bloggers) This post will describe a way I came up with of fitting a function that’s constrained to be increasing, using Stan. If you want practical help, standard statistical approaches, or expert research, this isn’t the place for you (look up “isotonic regression” or “Bayesian isotonic...

Read more »

Fearsome Engines Part 3: Which one should you use?

October 13, 2013
By
Fearsome Engines Part 3: Which one should you use?

There are lots of R engines emerging! I’ve interviewed members of each of the teams involved in these projects. In part 1 of this series, we covered the motivation of each project. Part 2 looked at the technical achievements and new features. This part tries to determine which projects are suitable for which users. Compatibility

Read more »

Nice tutorials to discover R

September 28, 2013
By

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...

Read more »

Introducing imagemetrics

September 25, 2013
By
Introducing imagemetrics

References 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...

Read more »

analyze the home mortgage disclosure act (hmda) microdata with r and monetdb

September 23, 2013
By

back in 1975, congress had it up to here with discriminatory lending practices and decided to require financial organizations originating home mortgages to report some basic operational statistics publicly.  the home mortgage disclosure act mandat...

Read more »