Browsing Complex and Adaptive Systems Laboratory by Subject "Semantic computing"

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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 ...