1 code implementation • 26 Mar 2024 • Ehsan Sabouni, H. M. Sabbir Ahmad, Vittorio Giammarino, Christos G. Cassandras, Ioannis Ch. Paschalidis, Wenchao Li
Unfortunately, both performance and solution feasibility can be significantly impacted by two key factors: (i) the selection of the cost function and associated parameters, and (ii) the calibration of parameters within the CBF-based constraints, which capture the trade-off between performance and conservativeness.
no code implementations • 29 Feb 2024 • Erhan Can Ozcan, Vittorio Giammarino, James Queeney, Ioannis Ch. Paschalidis
This paper investigates how to incorporate expert observations (without explicit information on expert actions) into a deep reinforcement learning setting to improve sample efficiency.
1 code implementation • 29 Sep 2023 • Vittorio Giammarino, James Queeney, Ioannis Ch. Paschalidis
We focus on the problem of imitation learning from visual observations, where the learning agent has access to videos of experts as its sole learning source.
1 code implementation • 12 Sep 2023 • Vittorio Giammarino, Alberto Giammarino, Matthew Pearce
In this work, we focus on a robotic unloading problem from visual observations, where robots are required to autonomously unload stacks of parcels using RGB-D images as their primary input source.
no code implementations • 25 Sep 2022 • Vittorio Giammarino, James Queeney, Lucas C. Carstensen, Michael E. Hasselmo, Ioannis Ch. Paschalidis
We investigate the use of animal videos (observations) to improve Reinforcement Learning (RL) efficiency and performance in navigation tasks with sparse rewards.
1 code implementation • 25 Sep 2022 • Vittorio Giammarino, Andrew J Meyer, Kai Biegun
We focus on an unloading problem, typical of the logistics sector, modeled as a sequential pick-and-place task.
1 code implementation • 11 Mar 2022 • Vittorio Giammarino, Matthew F Dunne, Kylie N Moore, Michael E Hasselmo, Chantal E Stern, Ioannis Ch. Paschalidis
We show that the combination of IL and RL can match human results and that good performance strongly depends on combining the allocentric information with an egocentric representation of the environment.
2 code implementations • 22 Mar 2021 • Vittorio Giammarino, Ioannis Ch. Paschalidis
This problem is referred to as hierarchical imitation learning and can be handled as an inference problem in a Hidden Markov Model, which is done via an Expectation-Maximization type algorithm.