John Alexis Guerra Gómez

I do Visual Analytics, i.e., I include the user in the big data analysis/science loop.

john.guerra[~at~]gmail.com
johnguerra.co
Resume | Full CV
Experience | Achievements | Projects | Papers | Photos | Classes


Visual Analytics

I create visual analytics systems that leverage interactive information visualizations and powerful algorithms to enable users to explore their own data to find actionable insights.

Traditional Data science

Traditional data science excludes users from the exploration process, applying algorithms that look like black boxes to them, and providing little or no support for users to make sense of the results.

My Skills

My Skils

The tools and techniques I use

What tools I use

Experience and Education

My experience in a timeline

Things I'm proud of

Yahoo Labs
  • Exploring information visualization interfaces for navigating big repositories of photos.
  • Helped redesigned Flickr stats.
  • Developed and deployed a visualization for better exploring the organizational units that is being used company wide.
  • Built a system for exploring the best photos in Flickr based in geo-location.
  • Four papers accepted in two major conferences (CHI2016 and AVI2016).
  • Created visual analytics for dozens of complex Yahoo datasets.
Photo treemap
Flickr Stats

PARC
  • Created Network Explorer a visual network analytics tool to explore hundreds of thousands of nodes, which was implemented, among others, in a Fraud, Waste and Abuse solution from Xerox and is being used for detecting fraud in Health Care networks.
  • Constructed several dashboards using Tableau.
  • Developed and integrated several other time-based and text based visualizations in 3 different products.
Network Explorer
Steamgraph

Extras
  • Creator of force-in-a-box a network layout that better distributes nodes according to their clusters or any other grouping attribute [Demo]
  • Creator of netClustering.js a purely Javascript network clustering library that runs in the browser [Demo]
  • Co-creator of tweetometro.co a platform to monitor Twitter activity for the Colombian presidential election.
  • Creator of WholikesMyFB.com a Facebook app to explore who likes your post the most.
  • Other experiments Tradeflow: A tool to compare the imports/exports of products in countries of the Americas
Force in a box
Network Explorer
Steamgraph
Treeversity2

PhD
  • PhD and MSc in Computer Science under the supervision of Dr. Ben Shneiderman and Dr. Catherine Plaisant.
  • Created the StemView a visualization technique that represents 5 characteristics of change in trees.
  • Created the Bullet a visualization glyph that represents 4 characteristics of change in trees.
  • Implemented TreeVersity2 a visual analytics web application to explore change in datasets over time.
  • Implemented TreeVersity a visual analytics desktop application to compare changes between two trees.
  • Conducted 13 case studies with 9 domain experts to validate TreeVersity and TreeVersity2.
Treeversity2
Treeversity
Lifeflow
Ben Shneiderman Photo Network

Lecturer

DUTO
Treeversity

Things I have built

Phototreemap

Representing groups of photos with numeric attributes. Work in progress, pending publication.


Network Explorer

Network Explorer

Visual analytics tool for understanding large networks. Pending publication.


TreeVersity v2

Visualizing five dimensions of change in a dataset changing over time using hierarchies


TreeVersity v1

Comparing changes between trees on structure and node values.


LifeFlow

A visual analytics tool for temporal categorical data. Helped developing the comparison modules as part of a broader project.


IRIS

A system to allow blind children to see colors and shapes with their hands

Selected papers and publications

Full list of papers

Patents and Software

  • 2012 Main author Colombian Software Registration 13-34-484 "IRIS version 1.0", registered on October 9th 2012.
  • 2011 Main author Colombian Software Registration 13-28-205 "IRIS version 3.0", registered on March 2nd 2011.
  • 2007 USA Patent application number 20080174566. System for the perception of images through touch. Registered in April 2006 (Abandoned).
  • 2006 International patent registration PCT/IB2006/001502 System for the perception of images with touch. In process with the WIPO (World Intellectual Property Organization) since June 2006.
  • 2006 Colombian "IRIS" Trademark registration, class 9 valid from December 22nd 2008 through 2018.
  • 2005 Colombian Patent No. 05-037765 "Sistema para la percepción de imágenes por medio del tacto por medio de un guante de imanes" (System for the perception of images by means of touch using a glove of magnets). Resolution 18963 of April 5 2011. Authors: María Fernanda Zúñiga Zabala, John Alexis Guerra Gómez and Felipe Restrepo Calle

My Hobby: Photography

I love taking photos, it is my main hobby. I have more than 250k photos to date, so I care about the problem of organizing and navigating photo repositories ;). Here is a sample of my photos on Flickr:

IMG_1734