HIMCE is a new hybrid multiple-imputation procedure that approximates covariance uncertainty via mode updating for fast, coherent imputation in high-dimensional continuous blocks while matching exact MVN behavior in small blocks.
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HIMCE: High-dimensional multiple imputation via covariance-mode updating for neuroimaging and spatiotemporal blocks
HIMCE is a new hybrid multiple-imputation procedure that approximates covariance uncertainty via mode updating for fast, coherent imputation in high-dimensional continuous blocks while matching exact MVN behavior in small blocks.