Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"Cluster validity"”.
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Neuroengineering of Clustering Algorithms
<p>"Cluster analysis can be broadly divided into multivariate data visualization, clustering algorithms, and cluster validation. This dissertation contributes neural network-based techniques to perform all three unsupervised learning tasks. Particularly, the first paper provides a comprehensive …
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Map-guided hyperspectral image superpixel segmentation using semi-supervised partial membership latent Dirichlet allocation
… state-of-the-art algorithms. We also develop new cluster validity metrics to evaluate the results.
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Robust techniques and applications in fuzzy clustering
… and outliers of least squares minimization based clustering techniques, such as Fuzzy c-Means (FCM) and its variants is addressed. In this work, two novel and robust clustering schemes are presented and analyzed in detail. They approach the problem of robustness from different perspectives. The …
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Data-driven Methods for Resting-state fMRI Biomarker Discovery in Mental Illness
… by existing methods. We evaluated twenty-four cluster validity indexes and identified Davies-Bouldin and Ray-Turi as the most effective methods for determining the optimal number of clusters in dFNC analysis, surpassing commonly used approaches. The other broad research area is the …