Fred Hohman

Data science + visualization researcher

I’m a Ph.D. student studying Computational Science and Engineering at Georgia Tech advised by Polo Chau and Alex Endert.

My research combines data mining and machine learning techniques with principles from human-computer interaction and visualization to make interactive tools to help people explore large graph data and interpret machine learning models.



Present —Ph.D. in Computational Science & Engineering
Aug. 2015Georgia Institute of Technology, Atlanta, GA
Advisor: Polo Chau, Co-advisor: Alex Endert
Minor: “User-Centered Design in Data Science”
Overall GPA: 4.00/4.00

May 2015 —B.S. in Mathematics, Area of Emphasis in Applied Mathematics
Aug. 2011B.S. in Physics
University of Georgia, Athens, GA
Thesis: “3D Printing the Trefoil Knot and its Pages”
Overall GPA: 3.84/4.00, Magna Cum Laude

Industry Research Experience

Summer 2017NASA Jet Propulsion Lab (JPL), Pasadena, CA
Creative Computer Scientist, Human Interfaces Group
Mentor: Scott Davidoff, Arun Viswanathan
Joint work between NASA JPL, Caltech, and Art Center creating interactive data visualizations for current scientific research.

Summer 2016Pacific Northwest National Lab, Richland, WA
National Security Ph.D. Intern, Data Sciences & Analytics Group
Mentor: Nathan Hodas
Built visualization tools to generate images from deep neural networks to explore image classifiers’ ability to learn semantics.

Academic Research Experience

Present —Georgia Institute of Technology, Atlanta, GA
Aug. 2016Graduate Research Assistant, School of Computational Science and Engineering
Advisor: Polo Chau, Co-advisor: Alex Endert
Member of the Polo Club of Data Science where we bridge and innovate at the intersection of data mining and human-computer interaction (HCI) to synthesize scalable, interactive, and interpretable tools that amplify human’s ability to understand and interact with big data.

May 2016 —Georgia Institute of Technology, Atlanta, GA
Aug. 2015Graduate Research Assistant, School of Computational Science and Engineering
Mentor: Surya Kalidindi
Conducted research in physical data science and material informatics by creating property-structure linkages using machine learning to predict material properties. Contributed to direction and code of PyMKS: Materials Knowledge Systems in Python.

May 2015 —University of Georgia, Athens, GA
Jan. 2013Undergraduate Research Assistant, Department of Mathematics
Advisor: David Gay
Explored 3D printing and mathematical exposition in topology. Programmed, designed, and 3D printed 34-piece, color-coordinated, and magnetized 3D puzzle of the trefoil knot fibration. Led 3D printing research and education in mathematics department.

Summer 2014REU in Mathematics and Computational Science
Fairfield University, Department of Mathematics, Fairfield, CT
Mentor: Shanon Reckinger
Directly compared numerical solutions derived from the Navier-Stokes equations to designed experiments performed at the lab-scale to model specific ocean phoneme. Configured MIT General Circulation Model on a linux computer cluster to run parallel computational fluid dynamics simulations.

Honors and Awards

2017Best Demo, Honorable Mention at ACM SIGMOD/PODS Conference
For “Visual Graph Query Construction and Refinement” 2015 — 2019President’s Fellowship at Georgia Institute of Technology
Select number of 1st year doctoral students who bring exemplary levels of scholarship and innovation to their academic departments 2015Outstanding Poster at JMM Undergraduate Poster Session in Computational Math
For “Experimental and Numerical Comparison of Oceanic Overflow” 2015UGA CURO Research Graduation Distinction
Awarded to undergraduates who write a thesis, present at the CURO Symposium, and complete 9 hours of research credit 2014UGA CURO Research Assistantship
Stipend awarded to outstanding undergraduates that actively participate in faculty-mentored research 2013Presidential Scholar
Achieved a 4.0 GPA during a semester with minimum 14 credit hours 2011 — 2015Dean’s List
Achieved at least a 3.5 GPA during a semester with minimum 14 credit hours 2011 — 2015Georgia HOPE Scholarship
Merit-based award to Georgia residents providing tuition assistance for their undergraduate degree 2011Mission of Blessed Trinity: Artistic Sensibility
One of two students to receive the Mission Statement award upon high-school graduation 2009Eagle Scout Award
Highest achievement attainable in the Boy Scouts of America, only 4% of scouts granted this rank


VIGOR: Interactive Visual Exploration of Graph Query Results
Robert Pienta, Fred Hohman, Alex Endert, Acar Tamersoy, Kevin Roundy, Chris Gates, Shamkant Navathe, Duen Horng Chau
IEEE Transactions on Visualization and Computer Graphics (Proc. VAST’17). Jan 2018. Phoenix, USA.
Site | PDF | Video | Preview | BibTeX

3D Exploration of Graph Layers via Vertex Cloning
James Abello, Fred Hohman, Duen Horng Chau
Poster, IEEE Visual Analytics Science and Technology (VAST). Oct 1-6, 2017. Phoenix, USA.
Site | PDF | Video (Youtube, Vimeo) | Poster | BibTeX

A Viz of Ice and Fire: Exploring Entertainment Video Using Color and Dialogue
Fred Hohman, Sandeep Soni, Ian Stewart, John Stasko
2nd Workshop on Visualization for the Digital Humanities at IEEE VIS. Oct 1-6, 2017. Phoenix, USA.
Site | PDF | Github | Data | BibTeX

mHealth Visual Discovery Dashboard
Dezhi Fang, Fred Hohman, Peter Polack, Hillol Sarker, Minsuk Kahng, Moushumi Sharmin, Mustafa al’Absi, Duen Horng Chau
Demo, ACM International Joint Conference on Pervasive and Ubiquitous Computing (UBICOMP). Sept 11-15, 2017. Maui, USA.
Site | PDF | Video | Poster | BibTeX

A Deep Learning Approach for Population Estimation from Satellite Imagery
Caleb Robinson, Fred Hohman, Bistra Dilkina
arXiv:1708.09086. August 30, 2017.
Site | PDF | Github (coming soon!) | BibTeX

Keeping the Bad Guys Out: Protecting and Vaccinating Deep Learning with JPEG Compression
Nilaksh Das, Madhuri Shanbhogue, Shang-Tse Chen, Fred Hohman, Li Chen, Michael E. Kounavis, Duen Horng Chau
arXiv:1705.02900. May 8, 2017.
Site | PDF | BibTeX

Visual Graph Query Construction and Refinement
Robert Pienta, Fred Hohman, Acar Tamersoy, Alex Endert, Shamkant Navathe, Hanghang Tong, Duen Horn Chau
Demo, ACM International Conference on Management of Data (SIGMOD/PODS). May 14-19, 2017. Chicago, USA.
Site | PDF | Video | Poster | BibTeX | Best Demo, Honorable Mention

ShapeShop: Towards Understanding Deep Learning Representations via Interactive Experimentation
Fred Hohman, Nathan Hodas, Duen Horng Chau
Late-Breaking Work, ACM Conference on Human Factors in Computing Systems (CHI). May 6-11, 2017. Denver, CO, USA.
Site | PDF | Video (Polo Club, CHI) | Github | Poster | BibTeX

Experimental and Numerical Comparison of Oceanic Overflow
Thomas Gibson, Fred Hohman, Theresa Morrison, Shanon Reckinger, Scott Reckinger
Abstract, American Physical Society Division of Fluid Dynamics. Nov 23-25, 2014. San Francisco, CA, USA.


Constellation: Visualizing Cybersecurity in Real Time
Aug. 2017NASA Jet Propulsion Lab (JPL).
Aug. 2017California Institute of Technology.

Visualizing Learned Semantics with Deep Learning
Nov. 2016Georgia Tech. Ph.D. Qualifying Oral Exam.

Drawing Semantics with Deep Learning
July 2016Pacific Northwest National Laboratory. National Security Internship Program Research Symposium.

3D Printing The Trefoil Knot And Its Pages
Mar. 2015UGA Center for Undergraduate Research Symposium. Hands on demo.

Experimental and Numerical Studies of Oceanic Overflow
June 2015American Meteorological Society’s 20th Conference on Atmospheric and Oceanic Fluid Dynamics.
Jan. 2015Joint Mathematics Meeting. Outstanding Poster at Student Poster Session in Computational Math.
Nov. 2014American Physical Society Division of Fluid Dynamics. Aug. 2014Invited and presented on behalf at Brown University, Los Alamos National Lab.
July 2014Northeast REU Mini-Conference at Yale University.
July 2014University of Rhode Island Bay Campus.

3D Printing in Topology
Mar. 2014UGA Center for Undergraduate Research Symposium. Hands on demo.


Sept. 2015“Georgia Tech PhD Student Puts Finishing Touches on 3D Printed Trumpety Trefoil.” 2015“Student Profile: Fred Hohman.” 2015 UGA Mathematics Department Newsletter. Feb. 2015“Falling Water.” Dec. 2014“Mathematics/Physics Student Creates 3D Printed Puzzle of Trefoil Knot, Catches Mathematical Community’s Interest.” July 2014“Day 311 - Trefoil Trumpet.” Apr. 2014“Mathematics with 3D Printing.” Sketches of Topology.


Spring 2017Graduate Teaching Assistant
Georgia Institute of Technology, Atlanta, GA
Data and Visual Analytics (CSE6242 / CX4242), Instructor: Polo Chau
Designed homeworks, held weekly office hours, and mentored student team projects for Data and Visual Analytics (CSE6242 / CX4242), a graduate course with 220+ students enrolled.

2014—2015Student Notetaker
University of Georgia, Athens, GA
Generated notes for undergraduate mathematics and physics courses for students with disabilities.

University of Georgia, Athens, GA
Specialized in tutoring calculus to undergraduates.


2017IDEA Workshop Proceedings Cover
ACM SIGKDD Workshop on Interactive Data Exploration and Analytics (IDEA), Halifax, Canada
Designed workshop poster and conference proceedings cover.

2017Brad Myers Advisee Tree
ACM Conference on Human Factors in Computing Systems (CHI), Denver, USA
Designed and implemented an interactive visualization of Brad Myers’s advisee tree shown during his CHI 2017 Lifetime Research Award talk. Designed accompanying ribbon worn by attendees at the conference.

Aug. 20143D Printed Cube Decomposition Trophy
University of Georgia Mathematics Department, Athens, USA
Designed, modeled, and 3D printed cube decomposition trophy for annual UGA High School Math Tournament that was given to the top scoring teams and participants.

Aug. 20143D Printed UGA Keychain
University of Georgia Lamar Dodd School of Art, Athens, USA
Created 3D printed UGA keychain and presentation notes given at Experience UGA: a interdisciplinary event that exposes middle-school and high-school students to hands-on learning activities.

Technology Skills

OS: Mac OS X, Ubuntu, Unix Command Line, Windows
Programming: Python, Matlab, Mathematica, C
Web: HTML, CSS, JavaScript, D3, SQL, Bootstrap, LaTeX, Markdown, Jekyll, Git
Graphics: Affinity Designer, Pixelmator, Matplotlib, Blender, Keynote, Meshlab, MakerBot Desktop
HCI: Contextual Inquiry, Think-Alouds, User Personas, Rapid Paper Prototyping, Affinity Diagraming

Professional Activities

Symposium on Visualization in Data Science (VDS) at IEEE VIS 2017
IEEE Visual Analytics Science and Technology (VAST) 2017
ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD) 2017
IEEE International Conference on Distributed Computing Systems (ICDCS) 2017
SIAM International Conference on Data Mining (SDM) 2017
ACM Conference on Human Factors in Computing Systems (CHI) 2017

2016 —Association for Computing Machinery (ACM)
2016 —Institute of Electrical and Electronics Engineers (IEEE)
2012 — 2015UGA Mathematics Club
2012 — 2013Society of Physics Students, UGA Chapter (SPS)
2011 — 2015National Society of Collegiate Scholars (NSCS)


Dr. Polo Chau, Assistant Professor
School of Computational Science and Engineering
Georgia Institute of Technology
Atlanta, GA, USA

Dr. Alex Endert, Assistant Professor
School of Interactive Computing
Georgia Institute of Technology
Atlanta, GA, USA

Dr. Nathan Hodas, Senior Research Scientist
Data Sciences and Analytics Group
Pacific Northwest National Laboratory
Richland, WA, USA

Dr. David Gay, Associate Professor
Department of Mathematics
University of Georgia
Athens, GA, USA

Dr. Shanon Reckinger, Assistant Teaching Professor
Mechanical and Industrial Engineering Department
Montana State University
Bozeman, MT, USA


Fred Hohman
Data Analytics & Simulation Lab
Klaus Advanced Computing Building
Georgia Tech
266 Ferst Dr NW
Atlanta, GA 30332

Solar System
Milky Way
Local Group