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Browsing by Subject "Semantic computing"

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Contexts as explicit parameterization of ontology driven methods

Albertoni, Riccardo ; Camossi, Elena ; De Martino, Monica ; Giannini, Franca ; Monti, Marina (Consiglio Nazionale delle Ricerche. Istituto di Matematica Applicata e Tecnologie Informatiche, 2007)

In the recent Computer Science literature, contexts have been proposed mainly to formalize context dependent background knowledge. In this paper we discuss the importance of the application of contexts as explicit ...
Examining the landscape of semantic similarity based mutation

Nguyen, Quang Uy ; Nguyen, Xuan Hoai ; O'Neill, Michael (ACM, 2011-07-12)

This paper examines how the semantic locality of a search operator affects the fitness landscape of Genetic Programming (GP). We compare the fitness landscapes of GP search when standard subtree mutation and a recently ...
Improving the generalisation ability of genetic programming with semantic similarity based crossover

Nguyen, Quang Uy ; Nguyen, Thi Hien ; Nguyen, Xuan Hoai ; O'Neill, Michael (Springer, 2010)

This paper examines the impact of semantic control on the ability of Genetic Programming (GP) to generalise via a semantic based crossover operator (Semantic Similarity based Crossover - SSC). The use of validation sets ...
Semantically-based crossover in genetic programming : application to real-valued symbolic regression

Nguyen, Quang Uy ; Nguyen, Xuan Hoai ; O'Neill, Michael ; McKay, Bob (Bob I.) ; Galván-López, Edgar (Springer, 2011-06)

We investigate the effects of semantically-based crossover operators in Genetic Programming, applied to real-valued symbolic regression problems. We propose two new relations derived from the semantic distance between ...