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《Journal of Software》 2009-04
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Geodesic Distance-Based Generalized Gaussian Laplacian Eigenmap

ZENG Xian-Hua1,2, LUO Si-Wei1, WANG Jiao1, ZHAO Jia-Li11(School of Computer and Information Technology, Beijing Jiaotong University, Beijing 100044, China) 2(School of Computer, China West Normal University, Nanchong 637002, China)  
The conventional Laplacian Eigenmap preserves neighborhood relationships based on Euclidean distance, that is, the neighboring high-dimensional data points are mapped into neighboring points in the low-dimensional space. However, the selections of neighborhood may influence the global low-dimensional coordinates. In this paper, both the geodesic distance and generalized Gaussian function are incorporated into Laplacian eigenmap algorithm. At first, a generalized Gaussian Laplacian eigenmap algorithm based on geodesic distance (GGLE) is proposed. The global low-dimensional coordinates obtained by GGLE have different clustering properties when different generalized Gaussian functions are used to measure the similarity between the high-dimensional data points. Then, this paper utilizes these properties to further propose the ensemble-based discriminant algorithm of the above-motioned GGLE. The main advantages of the ensemble-based algorithm are: The neighborhood parameter K is fixed and to construct the neighborhood graph and geodesic distance matrix needs one time only. Finally, the recognition experimental results on wood texture dataset show that it is an efficient ensemble discriminant algorithm based on manifold.
【Fund】: 国家自然科学基金Nos.60773016 60373029;; 国家高技术研究发展计划(863)No.2007AA01Z168;; 国家教育部博士点基金No.20050004001;; 四川教育厅重点项目No.07ZA121~~
【CateGory Index】: TP391.41
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