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- Joshua D. Knowles, David W. Corne
- Evolutionary Computation
- 2000

We introduce a simple evolution scheme for multiobjective optimization problems, called the Pareto Archived Evolution Strategy (PAES). We argue that PAES may represent the simplest possible nontrivial algorithm capable of generating diverse solutions in the Pareto optimal set. The algorithm, in its simplest form, is a (1 + 1) evolution strategy employingâ€¦ (More)

- Krzysztof Socha, Joshua D. Knowles, Michael Sampels
- Ant Algorithms
- 2002

We consider a simplification of a typical university course timetabling problem involving three types of hard and three types of soft constraints. A MAX-MIN Ant System, which makes use of a separate local search routine, is proposed for tackling this problem. We devise an appropriate construction graph and pheromone matrix representation after consideringâ€¦ (More)

Most popular evolutionary algorithms for multiobjec-tive optimisation maintain a population of solutions from which individuals are selected for reproduction. In this paper, we introduce a simpler evolution scheme for multi-objective problems, called the Pareto Archived Evolution Strategy (PAES). We argue that PAES may represent the simplest possibleâ€¦ (More)

- David W. Corne, Nick R. Jerram, Joshua D. Knowles, Martin J, Oates
- 2001

We describe a new selection technique for evolutionary multiobjective optimization algorithms in which the unit of selection is a hyperbox in objective space. In this technique , instead of assigning a selective tness to an individual, selective tness is assigned to the hyperboxes in objective space which are currently occupied by at least one individual inâ€¦ (More)

- Julia Handl, Joshua D. Knowles
- IEEE Trans. Evolutionary Computation
- 2007

- David W. Corne, Joshua D. Knowles, Martin J. Oates
- PPSN
- 2000

We introduce a new multiobjective evolutionary algorithm called PESA (the Pareto Envelope-based Selection Algorithm), in which selection and diversity maintenance are controlled via a simple hyper-grid based scheme. PESA's selection method is relatively unusual in comparison with current well known multiobjective evolutionary algorithms, which tend to useâ€¦ (More)

- Julia Handl, Joshua D. Knowles, Douglas B. Kell
- Bioinformatics
- 2005

MOTIVATION
The discovery of novel biological knowledge from the ab initio analysis of post-genomic data relies upon the use of unsupervised processing methods, in particular clustering techniques. Much recent research in bioinformatics has therefore been focused on the transfer of clustering methods introduced in other scientific fields and on theâ€¦ (More)

A memetic algorithm for tackling multiobjective optimization problems is presented. The algorithm employs the proven local search strategy used in the Pareto archived evolution strategy (PAES) and combines it with the use of a population and recombination. Verification of the new algorithm is carried out by testing it on a set of multiobjective 0/1 knapsackâ€¦ (More)

- Julia Handl, Joshua D. Knowles
- EMO
- 2005

- Julia Handl, Joshua D. Knowles, Marco Dorigo
- Artificial Life
- 2006

Ant-based clustering and sorting is a nature-inspired heuristic first introduced as a model for explaining two types of emergent behavior observed in real ant colonies. More recently, it has been applied in a data-mining context to perform both clustering and topographic mapping. Early work demonstrated some promising characteristics of the heuristic butâ€¦ (More)