อภิญญา เทพวรรณกุล. U-DBSCAN: A Density-Based Clustering Algorithm for Uncertain Objects. Master's Degree(Computer Engineering). King Mongkut's University of Technology Thonburi. KMUTT Library.. : King Mongkut's University of Technology Thonburi, 2009.
U-DBSCAN: A Density-Based Clustering Algorithm for Uncertain Objects
Abstract:
In recent years, uncertain data have gained increasing research interests due to its
natural presence in many applications such as location-based services and sensor
services. In this paper, we study the problem of clustering uncertain objects. We
propose a new deviation function that approximates the underlying uncertain model of
objects and a new density-based clustering algorithm, U-DBSCAN, that utilizes the
proposed deviation. Since, there is no cluster quality measurement of density-based
clustering at the present, thus, we also propose a metric which specifically measures the
density quality of clustering solution. Finally, we perform a set of experiments to
evaluate the quality effectiveness of our algorithm using our metric. The results reveal
that U-DBSCAN gives better clustering quality while having comparable running time
compared to the traditional approach of using representative points of objects with
DBSCAN and well-known approach ofFDBSCAN.