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We introduce a new dynamic clustering method for multivariate panel data char- acterized by time-variation in cluster … current center of their previous cluster as- signment. This links consecutive cross-sections in the panel together … settings. The method is illustrated using a multivariate panel of four accounting ratios for 28 large European insurance firms …
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This paper considers transformations of nonlinear semiparametric mean functions that yield moment conditions for estimation. Such transformations are said to be information equivalent if they yield the same asymptotic efficiency bound. I derive a unified theory of algebraic equivalence for...
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