show of force
Based on incomplete data, estimators for bandable and sparse covariance matrices are proposed and their theoretical and numerical properties are investigated. Minimax rates of convergence are established under the spectral norm loss and the proposed estimators are shown to be rate-optimal under mild regularity conditions.
As long as surfaces in hospitals are contaminated with drug-resistant bacteria, doctors’ and nurses’ hands become recontaminated seconds after washing and gloving, as soon as they pull open a privacy curtain to see the next patient or touch a bedrail.
I would fain merit your esteem, heedless of these pursy fellows from hulks and warehouses, with one ear lappetted by the pen behind it […]
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