本文概要地叙述了美国2000年人口普查后所进行的准确性和数字评估调查（A.C.E。调查）。它包括：抽样设计、事后分层、双系统估计等等。

This article summarizes the accuracy and coverage evaluation survey (A. C. E. survey) of the American census 2000. It includes sampling design, post-stratification, dual-system estimation and so on.

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