Sungeun An

Sungeun is a Ph.D. candidate in Human-Centered Computing at Georgia Tech, working on the virtual experimentation research assistant (VERA) project. She is interested in leveraging AI technologies and cognitive learning theories for facilitating the cognitive mechanisms involved in scientific discovery and learning.

Research Interests: cognitive computing, computational scientific discovery, learning science, and AI in education.

VERA: Virtual Ecological Research Assistant

VERA-Ecol (Ecology)

The Virtual Ecological Research Assistant (VERA) is developed by the Design & Intelligence Lab at Georgia Tech, in collaboration with Smithsonian’s Encyclopedia of Life Department. The VERA system leverages AI technologies like Natural Language Processing (NLP) and AI compiler to support cognitive aspects of learning such as inquiry-based learning and model-based reasoning

VERA enables users to construct conceptual models of ecological systems and run interactive model simulations. This allows users to explore ecological systems and perform “what if” experiments to either explain an existing ecological system or attempt to predict the outcome of future changes to one.

Figure 1 shows a conceptual model of a food web that involves cougars (​Puma concolor) mule deer (Odocoileus hemionus​), domestic horses (e​quus caballus​), and cat grass (​dactylis glomerata​) (base population) generated from VERA.


Figure 1. Conceptual model of the relationships between species.

Figure 2 shows a simulation result generated from the conceptual model in Figure 1. In the simulation graph, you will see how the populations change over time in relationship to one-another. In particular, you will notice a stable predator-prey cycle between cougar (orange line) and mule deer (light blue line); that is, the cycles crest and fall in one after the other.



Figure 2. Simulation result when running the model from Fig. 1

Jill Watson, the AI-enabled virtual teaching assistant (TA), answers user questions about VERA. The covered questions include technical questions about the tool – “How do I add a new project” – as well as subject matter questions – “What is consumption rate?”

Please visit to sign up (with your GT account) and start exploring VERA.

VERA-Epi (Epidemiology)

The VERA team modeled the impact of social distancing on the spread of COVID-19. The simulations show that practice of social distancing slows the spread of COVID-19 (“flattens the curve”).

With VERA, you can explore parameter values and see for yourself the flattening of the curve. Interested in learning more? Visit VERA-Epi or read the white paper.