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Cluster Validation of WHAN Galaxy Classification Using a Novel Approach To External Cluster Validation
The classification of galaxies is traditionally carried out using human-eye analysis of morphology or through information provided by a large survey of galaxies. Clustering methods can reduce the effort of manual classification ...
Scalable Machine Learning Algorithms in Parallel Database Systems Exploiting A Data Summarization Matrix
Data summarization is an essential mechanism to accelerate analytic algorithms on large data sets. In this work we present a comprehensive data summarization matrix, namely the Gamma matrix, from which we can derive ...