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一类特殊矩阵的广义特征值反问题 被引量:3
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作者 李杰红 《纯粹数学与应用数学》 CSCD 1998年第1期111-116,共6页
在给定部分特征值及部分特征向量的情况下讨论了一类特殊矩阵的广义特征值反问题,给出了问题可解的条件及相应的算法和算例.
关键词 广义特征值 广义特征向量 反问题 矩阵 特征值
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Image segmentation by using the localized subspace iteration algorithm 被引量:1
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作者 WU JinLong LI TieJun 《Science China Mathematics》 SCIE 2008年第8期1495-1509,共15页
An image segmentation algorithm called"segmentation based on the localized subspace iterations"(SLSI)is proposed in this paper.The basic idea is to combine the strategies in Ncut algorithm by Shi and Malik i... An image segmentation algorithm called"segmentation based on the localized subspace iterations"(SLSI)is proposed in this paper.The basic idea is to combine the strategies in Ncut algorithm by Shi and Malik in 2000 and the LSI by E,Li and Lu in 2007.The LSI is applied to solve an eigenvalue problem associated with the affinity matrix of an image,which makes the overall algorithm linearly scaled.The choices of the partition number,the supports and weight functions in SLSI are discussed.Numerical experiments for real images show the applicability of the algorithm. 展开更多
关键词 image segmentation localized subspace iteration ncut graph Laplacian 15a18 68U10
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