network analysis. social media. natural language processing. data visualization. web apps.

Digital Night at emlyon business school (2017)

I co-organized the Digital Night by emlyon business school made selected students and 5 companies work together on projects mixing data and business dimensions. Fun and hard work!

A new edition is planned for 2018!
Twitter Mix Days (2015 in Lyon, 2016 in Galway)

I founded the Twitter Mix Days by emlyon business school bring together developers, professionals and researchers to share the latest developments around Twitter: latest apps, frameworks and academic results obtained using Twitter.

The first edition was in Lyon and the second in Galway

Les calanques sont elles ouvertes?

check the code

Calanques are tiny, beautiful creeks on the Mediterranean sea. Their access can be closed because of weather conditions. Check this site to know if they open.

neuromarketing Forbes cover Neuromarketing: a timeline

visit the timeline - read the paper (in submission)

Neuromarketing is an emerging field connecting marketing and neuroscience. At the frontier between an academic research field and new business practices in market research. With Profs. Paul Wouters and Ale Smidts, we investigated the history of neuromarketing for the years 2002 - 2008. To write this history, we used a collection of documents mentioning "neuromarketing", in online and offline media, harvested by (at the time) research assistant Nicoline Beun.

This timeline illustrates key episodes in this history.
Real Time Opinion

check the code

This web app gives real time feedback from the audience during a lecture or a conference. Give a session code to the audience, and see how they vote: bored, following, or interested. The total of the votes is shown as a gauge. So, is your lecture interesting or not?

Umigon: sentiment analysis on Twitter

read the paper - check the code

visit the website of Umigon

Umigon is developed since December 2012 as a web application providing a service of sentiment detection in tweets. It has been designed to be fast and scalable. Umigon also provides indications for additional semantic features present in the tweets, such as time indications or markers of subjectivity.

Umigon is now available as a desktop application for Mac, PC and Linux. Contact me at clevallois[at]rsm.nl for information about licenses.

Philosophy, visualized: a conversation with Blake Thompson

watch the videos

Blake Thompson is a philosopher. He worked with artist Matt Leavitt on how to give a visual form to a philosophical argument. During a visit in Leiden, we walked to the Burcht and Blake answered a series of questions on this project.

Cowo: create semantic maps from your texts

visit the wiki - check the code

download cowo

Cowo takes a text (.txt file) and transforms it into a semantic map where the most frequent terms are clustered according to their co-ocurrences.

The 90 year anniversary of the Harvard Business Review - a data visualization for Kaggle

with Valerie Alloix

check the submission on Kaggle

download the full-sized poster

A map of the #dataviz community on Twitter in 2012

visit the interactive map

This map shows who is connected with whom in the dataviz community on Twitter, in 2012. A connection between 2 persons reflects their high similarity in terms of who they tend to mention in their tweets, not the fact that they are mentioning each other. This effect is obtained with Gaze, a software I created that you can find and download from this page.

The circle of co-authors of Pr. Frans van den Bosch

Visit the project

This is an evening project created in 2012 at the occasion of a symposium honoring Pr. Frans van den Bosch, a professor at Rotterdam School of Management. It shows all the co-authors of the professor, with the thickness of links corresponding to the number of co-authored publications.