John Alexis Guerra Gómez

John Alexis is a researcher, an entrepreneur and a dreamer.

He is a researcher at Los Andes University where he investigates novel information visualization techniques for photos, networks and trees. He is also a lecturer at UC Berkeley. Previously, he worked at Yahoo Labs and PARC. He studied Information Visualization while pursuing his PhD at the HCIL working with Ben Shneiderman and Catherine Plaisant.

As an entrepreneur, he co-founded BTactile a search engine of images for the blind; he also co-created a device to allow blind children to see colors and shapes with their hands.

He also likes to dream and build applications to generate insights using infovis such as: a report of the most followed accounts by the online communities of Openvis and IEEEVIS, a visualization of the results of the Colombian peace referendum (and of the 2016 US elections), a tool to monitor who likes your Facebook the most, or a Twitter monitor for the 2014 Colombian presidential election where he uncovered more than 500 fake accounts. He has also created open source libraries for in-browser network clustering and to distribute clusters on a network visualization using the group-in-a-box technique.