Timothy Darrah

Research

Research

My research focuses on AI reliability, self-improving systems, knowledge structures, and alignment.

My PhD at Vanderbilt's Institute for Software Integrated Systems, with Gautam Biswas and in collaboration with NASA Ames Research Center, focused on system-level prognostics and health-aware replanning for unmanned aerial vehicles: predicting how components degrade, and replanning missions online when they do. My current work applies the same questions to financial markets and AI agents: what makes a trading strategy likely to succeed, and how to build agent infrastructure that is safe to trust with real decisions.

Profiles: ResearchGate · GitHub

Journal articles

  1. A Data-Centric Approach to the Study of System-Level Prognostics for Cyber Physical Systems: Application to Safe UAV OperationsTimothy Darrah, Gautam Biswas, Jeremy Frank, Marcos Quinones-Grueiro, Christopher TeubertJournal of Surveillance, Security and Safety, 2022DOI
  2. Online Decision Making and Path Planning Framework for Safe Operation of Unmanned Aerial Vehicles in Urban ScenariosMarcos Quinones-Grueiro, Gautam Biswas, Ibrahim H. Ahmed, Timothy Darrah, Chetan S. KulkarniInternational Journal of Prognostics and Health Management 12(3), 2021DOI

Conference and workshop papers

  1. An Onboard-Offboard Architecture for Replanning in Time Constrained ScenariosTimothy Darrah, Jeremy Frank, Marcos Quinones-Grueiro, Gautam BiswasAssociation for the Advancement of Artificial Intelligence (AAAI), 2024
  2. An On-Board Off-Board Framework for Online Replanning: Applied to UAVs in Urban EnvironmentsTimothy Darrah, Jeremy Frank, Marcos Quinones-Grueiro, Gautam Biswas16th International Conference on Agents and Artificial Intelligence (ICAART), 2024
  3. Anomaly Detection for Multi-Zone Buildings Using Cluster-Trained LSTM AutoencodersAustin Coursey, Marcos Quinones-Grueiro, Gautam Biswas, Timothy Darrah9th International Conference on Control, Decision and Information Technologies (CoDIT), 2023DOI
  4. A Health-Aware Framework for Online Replanning of Unmanned Aerial Vehicles Missions under Faulty ConditionsTimothy Darrah, Marcos Quinones-Grueiro, Gautam Biswas, Jeremy FrankInternational Conference on Automated Planning and Scheduling (ICAPS), InTEX Workshop, 2023
  5. Developing Deep Learning Models for System Remaining Useful Life Predictions: Application to Aircraft EnginesTimothy Darrah, Andreas Lovberg, Jeremy E. Frank, Gautam Biswas, Marcos Quinones-GrueiroAnnual Conference of the PHM Society, 2022DOI
  6. Prognostics Based Decision Making for Safe and Optimal UAV OperationsTimothy Darrah, Marcos Quinones-Grueiro, Gautam Biswas, Chetan S. KulkarniAIAA SciTech 2021 Forum, 2021DOI
  7. Data Management Framework & UAV Simulation Testbed for the Study of System-Level Prognostics TechnologiesTimothy Darrah, Jeremy E. Frank, Marcos Quinones-Grueiro, Gautam BiswasAnnual Conference of the PHM Society, 2021DOI
  8. The Effects of Component Degradation on System-Level Prognostics for the Electric Powertrain System of UAVsTimothy Darrah, Chetan S. Kulkarni, Gautam BiswasAIAA SciTech 2020 Forum, 2020DOI
  9. A Decision-Making Framework for Safe Operations of Unmanned Aerial Vehicles in Urban ScenariosMarcos Quinones-Grueiro, Timothy Darrah, Gautam Biswas, Chetan S. KulkarniAnnual Conference of the PHM Society, 2020DOI
  10. Teaching Cybersecurity with Networked RobotsAkos Ledeczi, Miklos Maroti, Hamid Zare, Bernard Yett, Nicole M. Hutchins, Brian Broll, Peter Volgyesi, Michael B. R. Smith, Timothy Darrah, Mary Metelko, Xenofon Koutsoukos, Gautam Biswas50th ACM Technical Symposium on Computer Science Education (SIGCSE), 2019DOI
  11. Design and Development of a Low-Cost Open-Source Robotics Education PlatformTimothy Darrah, Nicole Hutchins, Gautam Biswas50th International Symposium on Robotics (ISR), Automatica, 2018
  12. Improving STEM Education with an Open-Source Robotics Learning EnvironmentTimothy Darrah, E. Kuryla, A. Bond, S. K. HargroveHawaii International Conference on Education, 2018
  13. A DSML for a Robotics Environment to Support Synergistic Learning of CT and GeometryNicole Hutchins, Timothy Darrah, Hamid Zare, Gautam BiswasInternational Conference on Computational Thinking Education, 2018
  14. Network Traffic Analysis: Detecting Malicious Activity at the Hardware LevelTimothy DarrahADMI Symposium, 2016

Preprints

  1. Predicting Strategy Outcomes from Indicator Composition: A Classification ApproachTimothy DarrahPreprint, 2026DOI

Dissertation

  1. A Health-Aware Replanning Framework for Unmanned Aerial Vehicles in Stochastic EnvironmentsTimothy DarrahPhD Dissertation, Vanderbilt University (advisor: Gautam Biswas), 2023

Book chapters and other

  1. Real-Time Root Monitoring of Hydroponic Crop Plants: Proof of Concept for a New Image Analysis SystemErdem Erdemir, Timothy DarrahLecture Notes in Electrical Engineering (Springer), 2017DOI
  2. Design and Optimization of a Bio-Inspired Submersible Vehicle in a Hydroponic EnvironmentTimothy Darrah, R. Turner38th Annual Research Symposium, Tennessee State University, 2016