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John Alexis Guerra Gómez

John Alexis Guerra Gómez focuses on research for information visualization, usability and accessibility, social networks, and human computer interaction at PARC. He uses his strong skills in software development to develop interactive information visualization interfaces to allow users to extract insights out of their datasets.

Prior to PARC, John helped in the founding of DUTO, a company where he led the development of the software component of IRIS, a system that allows blind students to see with their hands the colors and shapes of the pedagogical materials given in a traditional classroom. He was also a full-time computer science professor at the Universidad Tecnológica de Pereira, where he led several interest groups and research projects.

Dr. Gómez received his B.S. in Computer Science from the Universidad Tecnlógica de Pereira in Colombia, and then his Msc and Ph.D. in Computer Science from the University of Maryland at College Park, with an international Fulbright Science and Technology Scholarship under the supervision of Dr. Ben Shneiderman and Dr. Catherine Plaisant. In his Ph.D. thesis he used Information Visualization and Algorithmic techniques to help analysts find significant changes in hierarchical datasets over time, both in node values and in structure. He designed and implemented two software prototypes of TreeVersity, a tree comparison tool that uses intuitive glyphs, with carefully selected colors, algorithms, and reporting tools to allow the exploration of differences over time in trees.





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