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Publicações

Publicações por Luís Paulo Reis

2005

Applying biological paradigms to emerge behaviour in RoboCup Rescue team

Autores
Reinaldo, F; Certo, J; Cordeiro, N; Reis, LP; Camacho, R; Lau, N;

Publicação
PROGRESS IN ARTIFICIAL INTELLIGENCE, PROCEEDINGS

Abstract
This paper presents a hybrid behaviour process for performing collaborative tasks and coordination capabilities in a rescue team. RoboCup Rescue simulator and its associated international competition are used as the testbed for our proposal. Unlike other published work in this field one of our main concerns is having good results on RoboCup Rescue championships by emerging behaviour in agents using a biological paradigm. The benefit comes from the hierarchic and parallel organisation of the mammalian brain. In our behaviour process, Artificial Neural Networks are used in order to make agents capable of learning information from the environment. This allows agents to improve several algorithms like their Path Finding Algorithm to find the shortest path between two points. Also, we aim to filter the most important messages that arise from the environment, to make the right choice on the best path planning among many alternatives, in a short time. A policy action was implemented using Kohonen's network, Dijkstra's and D* algorithm. This policy has achieved good results in our tests, getting our team classified for RoboCup Rescue Simulation League 2005.

2006

Multi-strategy learning made easy

Autores
Reinaldo, F; Siqueira, M; Camacho, R; Reis, LP;

Publicação
WSEAS Transactions on Systems

Abstract
This paper presents the AFRANCI tool for the development of Multi-Strategy learning systems. Designing a Multi-Strategy system using AFRANCI is a two step process. The use interactively designs the structure of the system and then chooses the learning strategies for each module. After providing the datasets all modules as automatically trained. The system is aware and takes into consideration the inter-dependency of the modules. The tool has built-in learning algorithms but can use external programs implementing the learning algorithms. The tool has the following facilities. It allows any user to design in an interactive and easy fashion the structure of the target system. The structure of the target system is a collection of interconnected modules. The user may then choose the different learning algorithms to construct each module. The tool has several built-in Machine Learning algorithms has has interfaces that enables it to use external learning tools like WEKA and CN2. AFRANCI uses the interdependency of the modules to determine the sequence of training. For each module the system uses a wrapper to tune automatically the parameters of the learning algorithm. In the final step of the design sequence AFRANCI generates a compact and legible ready-to-use ANSI C open-source code for the final system.

2005

A tool for fast development of modular and hierarchic neural network-based systems

Autores
Reinaldo, F; Roisenberg, M; Barreto, JM; Camacho, R; Reis, LP;

Publicação
Modelling and Simulation 2005

Abstract
This paper presents the PyrantidNet Tool its a fast and easy way to develop Modular and Hierarchic Neural Network-based Systems. This tool facilitates the fast emergence of autonomous behaviours in agents because it uses a hierarchic and modular control methodology of heterogeneous learning modules: the pyramid. Using the graphical resources of PyramidNet the user is able to specify a behaviour system even having little understanding of artificial neural networks. Experimental tests have shown that a very significant speedup is attained in the development of modular and hierarchic neural network-based systems when using this tool.

2005

IROBOT'05: 1(st) International Workshop on Intelligent Robotics

Autores
Reis, LP; Carreto, C; Silva, E; Lau, N;

Publicação
2005 Portuguese Conference on Artificial Intelligence, Proceedings

Abstract

2005

Introduction

Autores
Reis, LP; Lau, N; Carreto, C; Silva, E;

Publicação
Progress in Artificial Intelligence - Lecture Notes in Computer Science

Abstract

2005

Lecture Notes in Artificial Intelligence: Introduction

Autores
Reis, LP; Lau, N; Carreto, C; Silva, E;

Publicação
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

Abstract

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