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Fast and Positive Definite Estimation of Large Covariance Matrix for High-Dimensional Data Analysis.
Fei Wen
Lei Chu
Rendong Ying
Peilin Liu
Published in:
IEEE Trans. Big Data (2021)
Keyphrases
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covariance matrix
positive definite
covariance matrices
sample size
principal component analysis
computer vision
objective function
pairwise
density estimation
feature space
high dimensional
nearest neighbor
model selection
kernel function
principal components