cris.boxmetadata.label.title
On the crossover operator for Ga-based optimizers in sequential projection pursuit
cris.boxmetadata.label.dateissued
18 browse.startsWith.months.june 2012
cris.boxmetadata.label.accesslevel
metadata only access
cris.boxmetadata.label.resourcetype
conference paper
cris.boxmetadata.label.authors
ESPEZUA LLERENA, SOLEDAD
Maciel C.
VILLANUEVA TALAVERA, EDWIN RAFAEL
University of Sao Paulo
University of Sao Paulo
cris.boxmetadata.label.abstract
Sequential Projection Pursuit (SPP) is a useful tool to uncover structures hidden in high-dimensional data by constructing sequentially the basis of a low-dimensional projection space where the structure is exposed. Genetic algorithms (GAs) are promising finders of optimal basis for SPP, but their performance is determined by the choice of the crossover operator. It is unknown until now which operator is more suitable for SPP. In this paper we compare, over four public datasets, the performance of eight crossover operators: three available in literature (arithmetic, single-point and multi-point) and five new proposed here (two hyperconic, two fitness-biased and one extension of arithmetic crossover). The proposed hyperconic operators and the multi-point operator showed the best performance, finding high-fitness projections. However, it was noted that the final selection is dependent on the dataset dimension and the timeframe allowed to get the answer. Some guidelines to select the most appropriate operator for each situation are presented.
cris.boxmetadata.label.citationstartpage
93
cris.boxmetadata.label.citationendpage
102
cris.boxmetadata.label.volume
1
cris.boxmetadata.label.language
English
cris.boxmetadata.label.ocdeknowledgeArea
Sistemas de automatización, Sistemas de control
cris.boxmetadata.label.scopusidentifier
2-s2.0-84862173723
cris.boxmetadata.label.partofresource
ICPRAM 2012 - Proceedings of the 1st International Conference on Pattern Recognition Applications and Methods
cris.boxmetadata.label.containerisbn
978-989842598-0
cris.boxmetadata.label.conference
1st International Conference on Pattern Recognition Applications and Methods, ICPRAM 2012
peru-layout.shadow-copies Directorio de Producción Científica Scopus