An Improved Spectral Clustering Algorithm Based on Local Neighbors in Kernel Space

Computer Science and Information Systems

Xinyue Liu¹  Xing Yong² 

[1] School of Computer Science and Technology, Dalian University of Technology;School of Software, Dalian University of Technology

关键词: Spectral Clustering;    Kernel Space;    Local Neighbors;    Linear Reconstruction;   

DOI  :  10.2298/CSIS110415064L

学科分类：社会科学、人文和艺术（综合）

来源: Computer Science and Information Systems

【 摘 要 】

Similarity matrix is critical to the performance of spectral clustering. Mercer kernels have become popular largely due to its successes in applying kernel methods such as kernel PCA. A novel spectral clustering method is proposed based on local neighborhood in kernel space (SC-LNK), which assumes that each data point can be linearly reconstructed from its neighbors. The SC-LNK algorithm tries to project the data to a feature space by the Mercer kernel, and then learn a sparse matrix using linear reconstruction as the similarity graph for spectral clustering. Experiments have been performed on synthetic and real world data sets and have shown that spectral clustering based on linear reconstruction in kernel space outperforms the conventional spectral clustering and the other two algorithms, especially in real world data sets.

【 授权许可】

CC BY-NC-ND