10.4225/03/592266e0db4cd YE ZHU YE ZHU Efficient Identification of Arbitrarily Shaped and Varied Density Clusters in High-dimensional Data Monash University 2017 Varied densities Density-based clustering Density-ratio Scaling Shared Subspaces Subspace Clustering Knowledge Representation and Machine Learning Pattern Recognition and Data Mining 2017-05-22 04:19:41 Thesis https://bridges.monash.edu/articles/thesis/Efficient_Identification_of_Arbitrarily_Shaped_and_Varied_Density_Clusters_in_High-dimensional_Data/5023628 Clustering has become one of the most important processes of knowledge discovery from data in the era of big data. It explores and reveals the hidden patterns in the data, and provides insight into the natural groupings in the data. This PhD project aims to solve two existing problems of density-based clustering in order to efficiently identify the arbitrarily shaped and varied density clusters in high-dimensional data. I have investigated and designed different approaches for each problem. The effectiveness of these proposed approaches has been verified with extensive empirical evaluations on synthetic and real-world datasets.