no code implementations • 6 Apr 2024 • Pengyuan Lu, Lin Zhang, Mengyu Liu, Kaustubh Sridhar, Fanxin Kong, Oleg Sokolsky, Insup Lee
Cyber-physical systems (CPS) have experienced rapid growth in recent decades.
1 code implementation • 6 Nov 2023 • Pengyuan Lu, Matthew Cleaveland, Oleg Sokolsky, Insup Lee, Ivan Ruchkin
However, existing repair techniques do not preserve previously correct behaviors.
1 code implementation • 4 Oct 2023 • Pengyuan Lu, Michele Caprio, Eric Eaton, Insup Lee
Upon a new task, IBCL (1) updates a knowledge base in the form of a convex hull of model parameter distributions and (2) obtains particular models to address task trade-off preferences with zero-shot.
1 code implementation • 24 May 2023 • Pengyuan Lu, Michele Caprio, Eric Eaton, Insup Lee
Upon a new task, IBCL (1) updates a knowledge base in the form of a convex hull of model parameter distributions and (2) obtains particular models to address task trade-off preferences with zero-shot.
no code implementations • 25 Apr 2023 • Mengyu Liu, Pengyuan Lu, Xin Chen, Fanxin Kong, Oleg Sokolsky, Insup Lee
We propose a model-free reinforcement learning solution, namely the ASAP-Phi framework, to encourage an agent to fulfill a formal specification ASAP.
no code implementations • 6 Apr 2023 • Pengyuan Lu, Ivan Ruchkin, Matthew Cleaveland, Oleg Sokolsky, Insup Lee
However, given the high diversity and complexity of LECs, it is challenging to encode domain knowledge (e. g., the CPS dynamics) in a scalable actual causality model that could generate useful repair suggestions.
1 code implementation • 3 Nov 2021 • Ivan Ruchkin, Matthew Cleaveland, Radoslav Ivanov, Pengyuan Lu, Taylor Carpenter, Oleg Sokolsky, Insup Lee
To predict safety violations in a verified system, we propose a three-step confidence composition (CoCo) framework for monitoring verification assumptions.
no code implementations • 29 Sep 2021 • Pengyuan Lu, Seungwon Lee, Amanda Watson, David Kent, Insup Lee, Eric Eaton, James Weimer
This tool achieves similar performance, in terms of per-task accuracy and resistance to catastrophic forgetting, as compared to fully labeled data.