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The Computer Journal 1985 28(4):439-443; doi:10.1093/comjnl/28.4.439
© 1985 by British Computer Society
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A Re-examination of Four Classificatory Fusion Strategies

D. J. Abel1 * § and W. T. Williams2 ¶

1 CSIRO Division of Computing Research, Davies Laboratory, PMB Aitkenvale, Australia, 2 Australian Institute of Marine Science, PMB 3, Townsville, Australia

Space-distortion has been recognised as an important factor in selection of a classificatory fusion strategy but has not been considered in depth. This paper suggests that two separable phenomena are present. Analysis shows that the group-average strategy is free from both forms and that the flexible strategy is not group-size-dependent. While use of the centroid and incremental sum of squares strategies has been regarded as dubious with other than distance measures and squared Euclidean distance, it is argued that both can be viewed as formulated algebraically and then retain their established space-distortion properties.


* To whom correspondence should be addressed.

§ CSIRO Division of Computing Research, Davies Laboratory, PMB Aitkenvale, Queensland 4814

Australian Institute of Marine Science, PMB 3, Townsville, Queensland 4810


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