Search Results for author: Vittorio Giammarino

Found 8 papers, 6 papers with code

Reinforcement Learning-based Receding Horizon Control using Adaptive Control Barrier Functions for Safety-Critical Systems

1 code implementation26 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.

Bilevel Optimization Model Predictive Control +1

A Model-Based Approach for Improving Reinforcement Learning Efficiency Leveraging Expert Observations

no code implementations29 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.

Continuous Control reinforcement-learning

Adversarial Imitation Learning from Visual Observations using Latent Information

1 code implementation29 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.

Imitation Learning

A Reinforcement Learning Approach for Robotic Unloading from Visual Observations

1 code implementation12 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.

Imitation Learning reinforcement-learning

Opportunities and Challenges from Using Animal Videos in Reinforcement Learning for Navigation

no code implementations25 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.

reinforcement-learning Reinforcement Learning (RL)

Combining imitation and deep reinforcement learning to accomplish human-level performance on a virtual foraging task

1 code implementation11 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.

Imitation Learning Reinforcement Learning (RL)

Online Baum-Welch algorithm for Hierarchical Imitation Learning

2 code implementations22 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.

Hierarchical Reinforcement Learning Imitation Learning +2

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