Search Results - "Lopes, Gabriel D."

A Survey of Actor-Critic Reinforcement Learning: Standard and Natural Policy Gradients by Grondman, I., Busoniu, L., Lopes, G. A. D., Babuska, R.

“…Policy-gradient-based actor-critic algorithms are amongst the most popular algorithms in the reinforcement learning framework. Their advantage of being able to…”
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A fast sampling method for estimating the domain of attraction by Najafi, Esmaeil, Babuška, Robert, Lopes, Gabriel A. D.

“…Most stabilizing controllers designed for nonlinear systems are valid only within a specific region of the state space, called the domain of attraction (DoA)…”
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How to implement a PEWS in a resource‐limited setting: A quantitative analysis of the bedside‐PEWS implementation in a hospital in northeast Brazil by Fluit, Karin S., Boom, Matthijs C., Brandão, Marlon B., Lopes, Gabriel D., Barreto, Paula G., Leite, Deborah C. F., Gurgel, Ricardo Q.

“…OBJECTIVES Quantitative analysis of the implementation of the bedside paediatric early warning system (B‐PEWS) in a resource‐limited setting. The B‐PEWS serves…”
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Unified Modeling and Control of Walking and Running on the Spring-Loaded Inverted Pendulum by Shahbazi, Mohammad, Babuska, Robert, Lopes, Gabriel A. D.

“…This paper addresses the control of steady state and transition behaviors for the bipedal spring-loaded inverted pendulum (SLIP) model. We present an…”
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Port-Hamiltonian Systems in Adaptive and Learning Control: A Survey by Nageshrao, Subramanya P., Lopes, Gabriel A. D., Jeltsema, Dimitri, Babuska, Robert

“…Port-Hamiltonian (PH) theory is a novel, but well established modeling framework for nonlinear physical systems. Due to the emphasis on the physical structure…”
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Reinforcement Learning for Port-Hamiltonian Systems by Sprangers, Olivier, Babuska, Robert, Nageshrao, Subramanya P., Lopes, Gabriel A. D.

“…Passivity-based control (PBC) for port-Hamiltonian systems provides an intuitive way of achieving stabilization by rendering a system passive with respect to a…”
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Learning Sequential Composition Control by Najafi, Esmaeil, Babuska, Robert, Lopes, Gabriel A. D.

“…Sequential composition is an effective supervisory control method for addressing control problems in nonlinear dynamical systems. It executes a set of…”
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Approximate analytical solutions to the double-stance dynamics of the lossy spring-loaded inverted pendulum by Shahbazi, Mohammad, Saranlı, Uluç, Babuška, Robert, Lopes, Gabriel A D

“…This paper introduces approximate time-domain solutions to the otherwise non-integrable double-stance dynamics of the 'bipedal' spring-loaded inverted pendulum…”
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Visual Servoing for Nonholonomically Constrained Three Degree of Freedom Kinematic Systems by Lopes, Gabriel A. D., Koditschek, Daniel E.

“…This paper addresses problems of robot navigation with nonholonomic motion constraints and perceptual cues arising from onboard visual servoing in partially…”
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Level sets and stable manifold approximations for perceptually driven non-holonomically constrained navigation by Lopes, Gabriel A. D., Koditschek, Daniel E.

“…This paper addresses problems of robot navigation in the presence of non-holonomic motion constraints arising from kinematics as well as holonomic constraints…”
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An application of sequential composition control to cooperative systems by Najafi, Esmaeil, Babuska, Robert, Lopes, Gabriel A. D.

“…Sequential composition is an effective supervisory control approach for addressing challenging control problems on complex dynamical systems. It constructs a…”
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Tools and scores for general and cardiovascular perioperative risk assessment: a narrative review by Moraes, Caio Mazzonetto Teófilo DE, Corrêa, Luisa DE Mendonça, Procópio, Ricardo Jayme, Carmo, Gabriel Assis Lopes DO, Navarro, Tulio Pinho

“…The number of surgical procedures in the world is large and in Brazil it has been expressing a growth trend higher than the population growth. In this context,…”
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Tools and scores for perioperative pulmonary, renal, hepatobiliary, hematological, and surgical site infection risk assessment: an update by MORAES, CAIO MAZZONETTO TEÓFILO DE, CORRÊA, LUISA DE MENDONÇA, PROCÓPIO, RICARDO JAYME, CARMO, GABRIEL ASSIS LOPES DO, NAVARRO, TULIO PINHO

“…ABSTRACT Introduction: perioperative risk assessment is essential to mitigate surgical complications, which suggests individual and collective interest since…”
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Robot Contact Language for Manipulation Planning by Najafi, Esmaeil, Shah, Anuj, Lopes, Gabriel A. D.

“…The task of robotic manipulation planning combines high-level decision-making with low-level controllers that interact with the environment. Generating…”
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Rapid learning in sequential composition control by Najafi, Esmaeil, Lopes, Gabriel A. D., Nageshrao, Subramanya P., Babuska, Robert

“…Sequential composition is an effective approach to address the control of complex dynamical systems. However, it is not designed to cope with unforeseen…”
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PREVALÊNCIA DE APNEIA OBSTRUTIVA DO SONO EM POPULAÇÃO CIRÚRGICA by HEIDEMANN, ALINE MARIA, GUALANDRO, DANIELLE MENOSI, DO CARMO, GABRIEL ASSIS LOPES, GENTA, PEDRO RODRIGUES, DRAGER, LUCIANO FERREIRA, CARAMELLI, BRUNO, LORENZI-FILHO, GERALDO

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Reinforcement learning for port-Hamiltonian systems by Sprangers, Olivier, Lopes, Gabriel A. D, Babuska, Robert

“…IEEE Transactions on Cybernetics, Volume: 45 , Issue: 5 , May 2015 Passivity-based control (PBC) for port-Hamiltonian systems provides an intuitive way of…”
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Modeling and Control of Legged Locomotion via Switching Max-Plus Models by Lopes, Gabriel A. D., Kersbergen, Bart, van den Boom, Ton J. J., De Schutter, Bart, Babuska, Robert

“…We present a gait generation framework for multi-legged robots based on max-plus algebra that is endowed with intrinsically safe gait transitions. The time…”
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Adaptive trajectory tracking and rejection of sinusoidal disturbances with unknown frequencies for uncertain mechanical systems by Forni, Paolo, Lopes, Gabriel A. D., Jeltsema, Dimitri

“…The problem of adaptively tracking a pre-planned trajectory and rejecting multi-sinusoidal input disturbances with unknown amplitudes, phases and frequencies…”
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Synchronization of a class of cyclic discrete-event systems describing legged locomotion by Lopes, Gabriel A. D., Kersbergen, Bart, De Schutter, Bart, van den Boom, Ton, Babuška, Robert

“…It has been shown that max-plus linear systems are well suited for applications in synchronization and scheduling, such as the generation of train timetables,…”
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