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20232025
most citedFactor-guided estimation of large covariance matrix function with conditional functional sparsity

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math.ST2025

Convergence of covariance and spectral density estimates for high-dimensional functional time series

Bufan Li, Xinghao Qiao, Weichi Wu +1

Second-order characteristics including covariance and spectral density functions are fundamentally important for both statistical applications and theoretical analysis in functiona…