Stemgraphic, a new visualization tool

PyData Carolinas 2016

At PyData Carolinas 2016 I presented the talk Stemgraphic: A Stem-and-Leaf Plot for the Age of Big Data.

Intro

The stem-and-leaf plot is one of the most powerful tools not found in a data scientist or statistician’s toolbox. If we go back in time thirty some years we find the exact opposite. What happened to the stem-and-leaf plot? Finding the answer led me to design and implement an improved graphical version of the stem-and-leaf plot, as a python package. As a companion to the talk, a printed research paper was provided to the audience (a PDF is now available through artchiv.es)

The talk

Thanks to the organizers of PyData Carolinas, videos of all the talks and tutorials have been posted on youtube. In just 30 minutes, this is a great way to learn more about stemgraphic and the history of the stem-and-leaf plot for EDA work. This updated version does include the animated intro sequence, but unfortunately the sound was recorded from the microphone, and not the mixer. You can see the intro sequence in higher audio and video quality on the main page of the website below.

Stemgraphic.org

I've created a web site for stemgraphic, as I'll be posting some tutorials and demo some of the more advanced features, particularly as to how stemgraphic can be used in a data science pipeline, as a data wrangling tool, as an intermediary to big data on HDFS, as a visual validation for building models and as a superior distribution plot, particularly when faced with non uniform distributions or distributions showing a high degree of skewness (long tails).

Github Repo

https://github.com/fdion/stemgraphic

Francois Dion
@f_dion

SELF 2015 Keynote

South East Linux Fest 2015

For the past several years, South East Linux Fest has been one of the conference in the southeast US that I've looked forward to. Not just for your day to day Linux admin stuff, but for a wide gamut of talks on databases, operating system design, security, programming, history, so on and so forth.

In 2013, we started to see some Raspberry Pi related talks (see Alcyone And On And On - hope you get the musical reference), and in 2014 I was able to present about Python 3 in the browser (thanks to Brython).

And here comes SELF 2015. I was pleasantly surprised to find out that my proposal for 2015 was not only accepted, but selected as the Saturday keynote, at 9am.

SELF Keynote

Title: "Team Near Space Circus: Computing at 80,000 ft"

By Francois Dion

Description:

On April 21st 2015, Team Near Space Circus made history, sending a high altitude balloon (NSC-01) into near space. Aboard the vehicle, a computing cluster (a first for HAB flights) of 7 networked Raspberry Pi, 8 cameras and multiple sensors recorded 250GB of data, images and video. 

This is the behind the scene story of this ground breaking flight.

When:

Saturday June 13th 2015, 9 AM.

P.S. This is a talk of general interest and will appeal to those who enjoy a good story.

When & Where

SouthEast|LinuxFest

June 12-14, 2015
Sheraton Charlotte Airport
Charlotte, NC

Francois Dion
@f_dion

from python import tourism

 Quel est le lien entre Python et le tourisme? On explore le thème sur 3DFutureTech.

Francois
@f_dion