Publications

Publications by LIAAD

2005

12th Portuguese Conference on Artificial Intelligence, EPIA 2005 Covilha, Portugal, December 5-8, 2005 - Introduction

Authors
Camacho, R; Alves, A; da Costa, JP; Azevedo, P;

Publication
PROGRESS IN ARTIFICIAL INTELLIGENCE, PROCEEDINGS

Abstract

2005

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

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

Publication
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.

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2005

Locating and Sizing Bank-Branches by Opening, Closing or Maintaining Facilities

Authors
Monteiro, MSR; Fontes, DBMM;

Publication
Operations Research Proceedings 2005, Selected Papers of the Annual International Conference of the German Operations Research Society (GOR), Bremen, September 7-9, 2005

Abstract

2005

Rigidity of hyperbolic sets on surfaces

Authors
Pinto, AA; Rand, DA;

Publication
JOURNAL OF THE LONDON MATHEMATICAL SOCIETY-SECOND SERIES

Abstract
Given a hyperbolic invariant set of a diffeomorphism on a surface, it is proved that, if the holonomies are sufficiently smooth, then the diffeomorphism on the hyperbolic invariant set is rigid in the sense that it is C1+ conjugate to a hyperbolic affine model.

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2005

Discordancy test for the bipolar Watson distribution defined on the hypersphere

Authors
Figueiredo, A; Gomes, P;

Publication
COMMUNICATIONS IN STATISTICS-SIMULATION AND COMPUTATION

Abstract
As the Watson distribution is much used for modeling axial data, it is important to investigate the existence of a possible outlier in samples from this distribution. So, we generalize to the hypersphere a test of discordancy of an outlier or several outliers en bloc available for the Watson distribution defined on the sphere. We also evaluate the performance of the test for some cases with the usual types of alternatives.

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2005

Identification of monoclonal proteins in serum: A comparison of acetate, agarose gel and capillary electrophoresis

Authors
Guimaraes, C; Ramalho, R; Ramos, J; Marinho, A; Oliveira, B; Caudeias, J;

Publication
CLINICA CHIMICA ACTA

Abstract