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Browsing by Author "Van Der Walt, C"

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  • Van der Walt, Christiaan M; Barnard, E (PRASA, 2009-11)
    The authors propose a hyper-ellipsoid clustering algorithm that grows clusters from local structures in a dataset and estimates the underlying geometrical structure of data with a set of hyper-ellipsoids. The clusters are ...
  • Van der Walt, Christiaan M; Barnard, E (18th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), 2007-11)
    The authors study the relationship between the properties of data and classifier performance. Data measures are employed to characterise classification problems and it is shown that these data measures successfully capture ...