Applications of Evolutionary Computing: EvoWorkshops 2004: by Andrea Bazzoli, Andrea G. B. Tettamanzi (auth.), Günther R. PDF

By Andrea Bazzoli, Andrea G. B. Tettamanzi (auth.), Günther R. Raidl, Stefano Cagnoni, Jürgen Branke, David Wolfe Corne, Rolf Drechsler, Yaochu Jin, Colin G. Johnson, Penousal Machado, Elena Marchiori, Franz Rothlauf, George D. Smith, Giovanni Squillero (eds

ISBN-10: 3540213783

ISBN-13: 9783540213789

ISBN-10: 3540246533

ISBN-13: 9783540246534

Evolutionary Computation (EC) offers with challenge fixing, optimization, and computer studying recommendations encouraged via rules of usual evolution and - netics. simply from this easy de?nition, it really is transparent that one of many major positive factors of theresearchcommunityinvolvedinthestudyofitstheoryandinitsapplications is multidisciplinarity. hence, EC has been in a position to draw the eye of an ever-increasing variety of researchers and practitioners in different ?elds. In its 6-year-long task, EvoNet, the ecu community of Excellence in Evolutionary Computing, has been the normal reference and incubator for that multifaceted group. EvoNet has supplied logistic and fabric aid for thosewhowerealreadyinvolvedinECbut,inthe?rstplace,ithashadacritical function in favoring the signi?cant development of the EC group and its interactions with longer-established ones. the most tool that has made this attainable has been the sequence of occasions, ?rst geared up in 1998, that experience spanned over either theoretical and functional features of EC. Ever when you consider that 1999, the current structure, during which the EvoWorkshops, a suite of workshops at the such a lot application-oriented features of EC, act as satellites of a center occasion, has confirmed to be very profitable and intensely consultant of the multi-disciplinarity of EC. as much as 2003, the middle was once represented by way of EuroGP, the most eu occasion devoted to Genetic Programming. EuroGP has been joined because the major occasion in 2004 by means of EvoCOP, previously a part of EvoWorkshops, which has develop into the eu convention on Evolutionary Computation in Combinatorial Optimization.

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Additional info for Applications of Evolutionary Computing: EvoWorkshops 2004: EvoBIO, EvoCOMNET, EvoHOT, EvoISAP, EvoMUSART, and EvoSTOC, Coimbra, Portugal, April 5-7, 2004. Proceedings

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1 Results and Discussion PerlGP Strategies. Three approaches for generating GP individuals were tested: Strategy 1 evolves expressions containing only trivial REs which count the occurrences of single amino acids. Strategy 2 evolves expressions containing full REs for amino acid sequence. Strategy 3 as Strategy 2 plus “dual REs” using an additional input of predicted secondary structure. Because the size of the search space differs between strategies, we tried to allow sufficient run-time in each case so that we could characterise the learning (and over-training) dynamics.

Since no pre-existing algorithms were available (recall these are novel problems that depart for classical feature selection tasks), a two-level heuristic approach has been proposed: on the first level, an evolutionary algorithm explores different thresholds for geneexpression values; on the second level, a greedy algorithm coupled with reduction rules solves a subsidiary combinatorial problem. The evaluation of this combined heuristic has been encouraging, providing robust subsets of genes for identifying different classes of lymphoma.

Regular expression support is provided by the PCRE library [9]. 5 GP Parameters Both implementations were run with non-migrating populations of 2000 individuals and a tournament selection scheme. In LGP, the number of evolved REs was 10, and the maximum program length (second part) was 50 instructions. 1). Evolving Regular Expression-Based Sequence Classifiers 35 Fig. 2. Best-of-tournament training fitness and testing performance obtained at the end of separate 10-fold cross-validation experiments (dataset A) with different run-times.

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Applications of Evolutionary Computing: EvoWorkshops 2004: EvoBIO, EvoCOMNET, EvoHOT, EvoISAP, EvoMUSART, and EvoSTOC, Coimbra, Portugal, April 5-7, 2004. Proceedings by Andrea Bazzoli, Andrea G. B. Tettamanzi (auth.), Günther R. Raidl, Stefano Cagnoni, Jürgen Branke, David Wolfe Corne, Rolf Drechsler, Yaochu Jin, Colin G. Johnson, Penousal Machado, Elena Marchiori, Franz Rothlauf, George D. Smith, Giovanni Squillero (eds


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