Agostino Dovier

  1. CLP-based protein fragment assembly.

    Authors: Agostino Dovier, Enrico Pontelli, Alessandro Dal Palu', Federico Fogolari
    Subjects: Artificial Intelligence
    Abstract

    The paper investigates a novel approach, based on Constraint Logic
    Programming (CLP), to predict the 3D conformation of a protein via fragments
    assembly. The fragments are extracted by a preprocessor-also developed for this
    work- from a database of known protein structures that clusters and classifies
    the fragments according to similarity and frequency. The problem of assembling
    fragments into a complete conformation is mapped to a constraint solving
    problem and solved using CLP.

  2. Multi-valued Action Languages in CLP(FD).

    Authors: Agostino Dovier, Andrea Formisano, Enrico Pontelli
    Subjects: Artificial Intelligence
    Abstract

    Action description languages, such as A and B, are expressive instruments
    introduced for formalizing planning domains and planning problem instances. The
    paper starts by proposing a methodology to encode an action language (with
    conditional effects and static causal laws), a slight variation of B, using
    Constraint Logic Programming over Finite Domains. The approach is then
    generalized to raise the use of constraints to the level of the action language
    itself. A prototype implementation has been developed, and the preliminary
    results are presented and discussed.

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