Talks and presentations

Astrobiological simulation: Make your own galaxy!

March 28, 2022

Outreach, TechNights, School of Computer Science, Carnegie Mellon University, Pittsburgh, PA, USA

This talk with code along session was part of TechNights, an outreach program at Carnegie Mellon University, School of Computer Science, aimed at middle school students to promote diversity in STEM. The recording is available here. The slide deck is available here

DiSH-trend: Intervention Modeling Simulator that Accounts for Trend Influences

December 15, 2021

Conference proceedings talk, Winter Simulation Conferece 2021, Phoenix, AZ, USA

Abstract: “Simulation on directed graphs is an important method for understanding the dynamics in the systems where connectivity graphs contain cycles. Discrete Stochastic Heterogeneous Simulator (DiSH) is one of the simulation tools with wide application, which uses regulator values to calculate state updates of regulated elements. Here we present a new simulation approach DiSH-trend which also takes into account the trends in regulating elements. We demonstrate the features of trend-based regulation, as well as hybrid regulation, which is a combination of the trend- and level-based approaches. The modeling capabilities are demonstrated on a small toy model, showcasing different functionalities. Real-world capabilities are demonstrated on a larger network model of food insecurity in the Ethiopian region Oromia. Adding trend-based regulation to models results in increased modeling flexibility, and hybrid regulation improves qualitative dynamic behavior prediction. With appropriate data, DiSH-trend becomes a powerful tool for exploring intervention strategies.”