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    Publications

    Publications by LIAAD

    1994

    Learning by Refining Algorithm Sketches

    Authors
    Brazdil, P; Jorge, A;

    Publication
    ECAI

    Abstract

    1994

    Use of Pyramids in Symbolic Data Analysis

    Authors
    Brito, P;

    Publication
    New Approaches in Classification and Data Analysis - Studies in Classification, Data Analysis, and Knowledge Organization

    Abstract

    1994

    ORDER STRUCTURE OF SYMBOLIC ASSERTION OBJECTS

    Authors
    BRITO, P;

    Publication
    IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING

    Abstract
    We study assertion objects that constitute a particular class of symbolic objects. Symbolic objects constitute a data analysis driven formalism, which can be compared to propositional calculus, but which is oriented toward the duality intension (characteristic properties) versus extension (set of all individuals verifying a given set of properties). The set of assertion objects is endowed with a partial order and a quasi-order. We focus on the property of completeness, which precisely expresses the duality intension-extension. The order structure of complete assertion objects is studied, using notions of lattice theory and Galois connection, and extending Wille's work to multiple-valued data. Two results are then obtained for particular cases.

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    1994

    Characterizing the Applicability of Classification Algorithms Using Meta-Level Learning

    Authors
    Brazdil, P; Gama, J; Henery, B;

    Publication
    Machine Learning: ECML-94, European Conference on Machine Learning, Catania, Italy, April 6-8, 1994, Proceedings

    Abstract

    1994

    Building symbolic representations of intuitive real-time skills from performance data

    Authors
    Michie, D; Camacho, R;

    Publication
    Machine Intelligence 13

    Abstract

    1994

    COORDINATE CHANGE EIGENVALUES FOR BIMODAL PERIOD-DOUBLING RENORMALIZATION

    Authors
    MACKAY, RS; PINTO, AA; VANZEIJTS, JBJ;

    Publication
    PHYSICS LETTERS A

    Abstract
    The coordinate change eigenvalues for the MacKay and van Zeijts period doubling renormalisation operator for bimodal 1D maps are derived. They are found in numerical computations of the spectrum at all the periodic orbits of renormalisation of period up to five.

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