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- W3089572886 abstract "Kernel least mean square based on the Nystrom method (NysKLMS) has been proposed to fix the network structure of kernel least mean square (KLMS) by approximating a large Gram matrix with a low-rank matrix generated by sampling from input vectors. However, the computational burden of NysKLMS increases with the growth of the input dimension. To alleviate this computational burden, a novel KLMS based on a sparse Nystrom method (SNKLMS) algorithm is proposed in this paper. Unlike NysKLMS using the k-means sampling to obtain k centroids from input data, the proposed SNKLMS algorithm first divides input data into several clusters, and then selects k centroids from the obtained clusters equally. According to the relation between the Gaussian kernel and the distance of different clusters, partial submatrices in the low-rank matrix of SNKLMS can be omitted to further reduce the operations of multiplication and addition, and thus a sparse low-rank matrix is obtained. Simulations on the channel equalization and chaotic time-series prediction validate the superiorities of SNKLMS." @default.
- W3089572886 created "2020-10-08" @default.
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- W3089572886 date "2020-10-01" @default.
- W3089572886 modified "2023-09-26" @default.
- W3089572886 title "Kernel Least Mean Square Based on the Sparse Nyström Method" @default.
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- W3089572886 doi "https://doi.org/10.1109/iscas45731.2020.9181116" @default.
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