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The second method approximates the\nlatter approach by using only a subset of I(all) and is\ntherefore computationally much more efficient, but\nasymptotically equivalent. Omitting the additive correction\nterm Gamma in either method offers another two approaches which\nare more powerful on small scales and less powerful on large\nscales, however, not asymptotically minimax optimal anymore.\nFinally, the block procedure is a compromise between adding\nGamma or not, having intermediate power properties. 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