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摘要:
Local coordinate coding (LCC) is a framework to approximate a Lipschitz smooth function by combining linear functions into a nonlinear one. For locally linear classification, LCC requires a coding scheme that heavily determines the nonlinear approximation ability, posing two main challenges: 1) the locality making faraway anchors have smaller influences on current data and 2) the flexibility balancing well between the reconstruction of current data and the locality. In this paper, we address the problem from the theoretical analysis of the simplest local coding schemes, i.e., local Gaussian coding and local student coding, and propose local Laplacian coding (LPC) to achieve the locality and the flexibility. We apply LPC into locally linear classifiers to solve diverse classification tasks. The comparable or exceeded performances of state-of-the-art methods demonstrate the effectiveness of the proposed method.
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来源 :
IEEE TRANSACTIONS ON CYBERNETICS
ISSN: 2168-2267
年份: 2015
期: 12
卷: 45
页码: 2937-2947
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JCR@2022
ESI学科: COMPUTER SCIENCE;
ESI高被引阀值:168
JCR分区:1
中科院分区:1