随机化正交表

一般的正交表是由全部处理组合中的若干个固定的处理组合组成，它是一个确定的表，具有施工优良的性质，但是它也具有因确定性而带来的缺点，如参数估计的局部性等。本文将给出一种克服此缺点百仍具有原来优点的表－随机化正交表。

RANDOMIZED ORTHOGONAL ARRAY

It is known that an existing orthogonal array is a fixed array.In other words,it consists of some fixed treatment combinations,i.e.it is a fixed subset of the global experimental space.If one only uses some fixed(specified)combinations to carry out the experiment,there must are some limitations on some aspects such as estimating parameters,although the orthogonal array has the fine properties of balance and comparability.Some of parameter estimators will be biased.To overcome this shortcoming this paper proposes randomized orthogonal array which has the same fine properties as original orthogonal array.