219 documents found, page 1 of 22
Comparing RL policies for robotic pusher
Bonjour, Pedro; Lopes, Rui PedroReinforcement learning (RL) has been consolidated as a promising approach to optimizing robotic tasks, allowing the improvement of performance and energy efficiency. This study investigates the effectiveness of five RL algorithms in the Pusher environment. Advantage Actor-Critic (A2C), Proximal Policy Optimization (PPO), Deep Deterministic Policy Gradient (DDPG), Soft Actor-Critic (SAC) and Twin Delayed Deep De...
Optimization, Learning Algorithms and Applications: 5th International Conferenc...
Pereira, Ana I.; Fernandes, Florbela P.; Coelho, João Paulo; Teixeira, João Paulo; Lima, José; Pacheco, Maria F.; Oneto, Luca; Lopes, Rui PedroThe volumes CCIS 2617 and 2618 contain the refereed proceedings of the V International Conference on Optimization, Learning Algorithms and Applications (OL2A 2025), a hybrid event held on April 28–30. OL2A provided a space for the research community on optimization and learning to get together and share the latest developments, trends and techniques as well as develop new paths and collaborations. OL2A had the ...
Optimization, Learning Algorithms and Applications: 5th International Conferenc...
Pereira, Ana I.; Fernandes, Florbela P.; Coelho, João Paulo; Teixeira, João Paulo; Lima, José; Pacheco, Maria F.; Oneto, Luca; Lopes, Rui PedroThe volumes CCIS 2617 and 2618 contain the refereed proceedings of the V International Conference on Optimization, Learning Algorithms and Applications (OL2A 2025), a hybrid event held on April 28–30. OL2A provided a space for the research community on optimization and learning to get together and share the latest developments, trends and techniques as well as develop new paths and collaborations. OL2A had the ...
Limitações da Metodologia do IPCC para Avaliação do Carbono no Solo: Aplicação ...
Lima, Arthur A.J.; Toloto, Matheus; Figueiredo, Tomás de; Lopes, Rui Pedro; Vidal, Eva; Hernández, ZulimarConsiderando a problemática das áreas ardidas em Portugal e a crescente preocupação com a descarbonização da Europa, a mudança do uso do solo (MUS) em certas regiões do país torna-se uma estratégia para alcançar o objetivo de zero emissões. A MUS pode resultar em aumento ou diminuição do estoque de Carbono Orgânico do Solo (COS), sendo a quantificação desse elemento crucial para antecipar os possíveis cenários ...
Soil Organic Carbon Assessment Using Remote-Sensing Data and Machine Learning: ...
Lima, Arthur A. J.; Lopes, Júlio Castro; Lopes, Rui Pedro; Figueiredo, Tomás d'Aquino; Vidal-Vásquez, Eva; Hernandez Hernandez, ZulimarIn the current global change scenario, valuable tools for improving soils and increasing both agricultural productivity and food security, together with effective actions to mitigate the impacts of ongoing climate change trends, are priority issues. Soil Organic Carbon (SOC) acts on these two topics, as C is a core element of soil organic matter, an essential driver of soil fertility, and becomes problematic wh...
IV International Conference on Optimization, Learning Algorithms and Applicatio...
Pereira, Ana I.; Fernandes, Florbela P.; Coelho, João Paulo; Teixeira, João Paulo; Lima, José; Oneto, Luca; Pacheco, Maria F.; Lopes, Rui PedroWelcome to OL2A 2025 - International Conference on Optimization, Learning Algorithms and Applications. OL2A offers a forum for the research community on optimization and learning to get together and share the latest developments and techniques, as well as to develop new paths and collaborations. OL2A provides a broad scope of presentations, covering many areas of optimization and learning and state-of the- art ...
IX Encontro International de Formação na Docência: livro de atas
Silva, Elisabete Mendes; Lopes, Rui Pedro; Mesquita, Cristina; Vaz, Paula Marisa Fortunato; Prada, Ana Raquel Russo; Costa, Jacinta Casimiro daEm 2018, Seldon e Abidoye alertaram para a revolução iminente da inteligência artificial e chamaram a atenção de todos os educadores, professores e investigadores do mundo para o que os esperava. Enquanto muitas áreas, como a medicina, os transportes ou a atividade militar, já tinham aplicado a inteligência artificial de forma extensiva, a educação era um domínio ainda negligenciado. De acordo com Seldon e Abid...
Carbono no Solo no Nordeste Transmontano: relações com clima e uso da terra
Lima, Arthur Aparecido Janoni; Paz Gonzalez, Antonio; Lopes, Rui Pedro; Hernández, Zulimar; Figueiredo, Tomás deO carbono é um dos elementos responsáveis pela fertilidade dos solos, aspeto decisivo da produtividade agrícola. A quantificação convencional de Carbono Orgânico no Solo (SOC) é feita por análise laboratorial, método dispendioso e moroso e inviável para grandes áreas, o que estimula a exploração de novos métodos. Este trabalho tem como objetivo avaliar, preliminarmente, relações entre clima, uso da terra e SOC ...
Literature review on the smart city resources analysis with big data methodologies
Gubareva, Regina; Lopes, Rui PedroThis article provides a systematic literature review on applying different algorithms to municipal data processing, aiming to understand how the data were collected, stored, pre-processed, and analyzed, to compare various methods, and to select feasible solutions for further research. Several algorithms and data types are considered, finding that clustering, classification, correlation, anomaly detection, and p...
Computer vision in augmented, virtual, mixed and extended reality environments—...
Lopes, Júlio Castro; Lopes, Rui PedroThis work describes a bibliometric analysis of the literature on the use of computer vision algorithms in Augmented Reality (AR), Virtual Reality (VR), Mixed Reality (MR), and Extended Reality (XR) environments. The analysis aims to highlight the evolution, trends, and effects of research in this field. This review provides an overview of immersive technologies and their applications, as well as the role of com...