no code implementations • 26 May 2023 • Fabio Anselmi, Mauro Castelli, Alberto D'Onofrio, Luca Manzoni, Luca Mariot, Martina Saletta
In recent years, a new mutation operator, Geometric Semantic Mutation with Local Search (GSM-LS), has been proposed to include a local search step in the mutation process based on the idea that performing a linear regression during the mutation can allow for a faster convergence to good-quality solutions.
no code implementations • 7 Jun 2022 • Gloria Pietropolli, Giuliamaria Menara, Mauro Castelli
The proposed algorithm, called the GP-FST-PSO Surrogate Model, achieves satisfactory results in both the search for the global optimum and the production of a visual approximation of the original benchmark function (in the 2-dimensional case).
no code implementations • 5 May 2022 • Mauro Castelli, Luca Manzoni, Luca Mariot, Giuliamaria Menara, Gloria Pietropolli
Among the evolutionary methods, one that is quite prominent is Genetic Programming, and, in recent years, a variant called Geometric Semantic Genetic Programming (GSGP) has shown to be successfully applicable to many real-world problems.
no code implementations • 8 Jun 2021 • Leonardo Trujillo, Jose Manuel Muñoz Contreras, Daniel E Hernandez, Mauro Castelli, Juan J Tapia
Geometric Semantic Genetic Programming (GSGP) is a state-of-the-art machine learning method based on evolutionary computation.
1 code implementation • 3 Jun 2021 • Mauro Castelli, Luca Manzoni, Luca Mariot, Marco S. Nobile, Andrea Tangherloni
In the crowded environment of bio-inspired population-based metaheuristics, the Salp Swarm Optimization (SSO) algorithm recently appeared and immediately gained a lot of momentum.
1 code implementation • 23 Apr 2020 • Domagoj Jakobovic, Luca Manzoni, Luca Mariot, Stjepan Picek, Mauro Castelli
In the second experiment, we train a GP convolutional predictor on two degraded images, removing around 20% of their pixels.
no code implementations • 23 Apr 2020 • Luca Manzoni, Domagoj Jakobovic, Luca Mariot, Stjepan Picek, Mauro Castelli
Tasks related to Natural Language Processing (NLP) have recently been the focus of a large research endeavor by the machine learning community.
1 code implementation • 23 Jan 2018 • Mauro Castelli, Ivo Gonçalves, Luca Manzoni, Leonardo Vanneschi
The objective of this paper is to define an effective strategy for building an ensemble of Genetic Programming (GP) models.
no code implementations • 3 Jul 2017 • Mauro Castelli, Gianpiero Cattaneo, Luca Manzoni, Leonardo Vanneschi
Genetic algorithms (GAs) are an optimization technique that has been successfully used on many real-world problems.
no code implementations • 19 Jun 2017 • Ivo Gonçalves, Sara Silva, Carlos M. Fonseca, Mauro Castelli
The usage of the proposed semantic stopping criteria in conjunction with the computation of optimal mutation/learning steps also results in small trees and neural networks.
no code implementations • 27 Apr 2017 • Stefano Beretta, Mauro Castelli, Ivo Goncalves, Roberto Henriques, Daniele Ramazzotti
One of the most challenging tasks when adopting Bayesian Networks (BNs) is the one of learning their structure from data.
no code implementations • 8 Mar 2017 • Stefano Beretta, Mauro Castelli, Ivo Goncalves, Ivan Merelli, Daniele Ramazzotti
Gene and protein networks are very important to model complex large-scale systems in molecular biology.