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2017 ; 114
(37
): 9814-9819
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Robust continuous clustering
#MMPMID28851838
Shah SA
; Koltun V
Proc Natl Acad Sci U S A
2017[Sep]; 114
(37
): 9814-9819
PMID28851838
show ga
Clustering is a fundamental procedure in the analysis of scientific data. It is
used ubiquitously across the sciences. Despite decades of research, existing
clustering algorithms have limited effectiveness in high dimensions and often
require tuning parameters for different domains and datasets. We present a
clustering algorithm that achieves high accuracy across multiple domains and
scales efficiently to high dimensions and large datasets. The presented algorithm
optimizes a smooth continuous objective, which is based on robust statistics and
allows heavily mixed clusters to be untangled. The continuous nature of the
objective also allows clustering to be integrated as a module in end-to-end
feature learning pipelines. We demonstrate this by extending the algorithm to
perform joint clustering and dimensionality reduction by efficiently optimizing a
continuous global objective. The presented approach is evaluated on large
datasets of faces, hand-written digits, objects, newswire articles, sensor
readings from the Space Shuttle, and protein expression levels. Our method
achieves high accuracy across all datasets, outperforming the best prior
algorithm by a factor of 3 in average rank.