Search Results for author: Stefano Nolfi

Found 12 papers, 0 papers with code

On the Unexpected Abilities of Large Language Models

no code implementations9 Aug 2023 Stefano Nolfi

Large Language Models (LLMs) are capable of displaying a wide range of abilities that are not directly connected with the task for which they are trained: predicting the next words of human-written texts.

Relation

The Role of Morphological Variation in Evolutionary Robotics: Maximizing Performance and Robustness

no code implementations4 Aug 2022 Jonata Tyska Carvalho, Stefano Nolfi

Exposing an Evolutionary Algorithm that is used to evolve robot controllers to variable conditions is necessary to obtain solutions which are robust and can cross the reality gap.

Qualitative Differences Between Evolutionary Strategies and Reinforcement Learning Methods for Control of Autonomous Agents

no code implementations16 May 2022 Nicola Milano, Stefano Nolfi

In this paper we analyze the qualitative differences between evolutionary strategies and reinforcement learning algorithms by focusing on two popular state-of-the-art algorithms: the OpenAI-ES evolutionary strategy and the Proximal Policy Optimization (PPO) reinforcement learning algorithm -- the most similar methods of the two families.

reinforcement-learning Reinforcement Learning (RL)

Automated Curriculum Learning for Embodied Agents: A Neuroevolutionary Approach

no code implementations17 Feb 2021 Nicola Milano, Stefano Nolfi

We demonstrate how an evolutionary algorithm can be extended with a curriculum learning process that selects automatically the environmental conditions in which the evolving agents are evaluated.

The Dynamic of Body and Brain Co-Evolution

no code implementations23 Nov 2020 Paolo Pagliuca, Stefano Nolfi

We introduce a method that permits to co-evolve the body and the control properties of robots.

Autonomous Learning of Features for Control: Experiments with Embodied and Situated Agents

no code implementations15 Sep 2020 Nicola Milano, Stefano Nolfi

As discussed in previous studies, the efficacy of evolutionary or reinforcement learning algorithms for continuous control optimization can be enhanced by including a neural module dedicated to feature extraction trained through self-supervised methods.

Continuous Control Dimensionality Reduction +1

Efficacy of Modern Neuro-Evolutionary Strategies for Continuous Control Optimization

no code implementations11 Dec 2019 Paolo Pagliuca, Nicola Milano, Stefano Nolfi

We analyze the efficacy of modern neuro-evolutionary strategies for continuous control optimization.

Continuous Control

Long-Term Progress and Behavior Complexification in Competitive Co-Evolution

no code implementations18 Sep 2019 Luca Simione, Stefano Nolfi

The possibility to use competitive evolutionary algorithms to generate long-term progress is normally prevented by the convergence on limit cycle dynamics in which the evolving agents keep progressing against their current competitors by periodically rediscovering solutions adopted previously over and over again.

Evolutionary Algorithms

Scaling Up Cartesian Genetic Programming through Preferential Selection of Larger Solutions

no code implementations22 Oct 2018 Nicola Milano, Stefano Nolfi

Finally, for problems like the Paige regression in which neutrality plays a minor role, the advantage of the preferential selection of larger solutions can be extended by preferring larger solutions also among quasi-neutral alternative candidate solutions, i. e. solutions achieving slightly different performance.

regression

Robust Optimization through Neuroevolution

no code implementations2 Oct 2018 Paolo Pagliuca, Stefano Nolfi

We propose a method for evolving solutions that are robust with respect to variations of the environmental conditions (i. e. that can operate effectively in new conditions immediately, without the need to adapt to variations).

Car Racing

Robustness, Evolvability and Phenotypic Complexity: Insights from Evolving Digital Circuits

no code implementations12 Dec 2017 Nicola Milano, Paolo Pagliuca, Stefano Nolfi

We show how the characteristics of the evolutionary algorithm influence the evolvability of candidate solutions, i. e. the propensity of evolving individuals to generate better solutions as a result of genetic variation.

Moderate Environmental Variation Promotes the Evolution of Robust Solutions

no code implementations22 Oct 2017 Nicola Milano, Jônata Tyska Carvalho, Stefano Nolfi

Previous evolutionary studies demonstrated how evaluating evolving agents in variable environmental conditions enable them to develop solutions that are robust to environmental variation.

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