DAG-searched and Density-based Initial Centroid Location Method for Fuzzy Clustering of Big Biomedical Data
Department of Quantitative Health Sciences
Bioinformatics | Computer Sciences
Randomly allocating initial centroids may lead to undesired steady states for fuzzy c-means (FCM) clustering. This paper proposes an alternative method to automatically search initial centroid location based on data density. Specifically, this method auto-searches points located in high-density domains as centroids using directed acycline graph (DAG) based algorithm, and then iteratively fnding the optimal patterns. Compared with random initialization method, our method seems to have the potential to improve FCM accuracy for larger data size with seconds' tradeoff in computational time using published datasets.
initial centroids, fuzzy clustering, density, directed acycline graph
Wang, Chanpaul Jin; Fang, Hua (Julia); and Wang, Honggang, "DAG-searched and Density-based Initial Centroid Location
Method for Fuzzy Clustering of Big Biomedical Data" (2015). Quantitative Health Sciences Publications and Presentations. 1147.