在正交表的理论中,一个可图示的正交表指的是可按照正交表行的hamming距离,形成一个结合方案.根据正交表的构造方法,证明了一种强度为2的正交表按照Hamming距离进行分类是结合方案.
In the theory of orthogonal arrays,an orthogonal array is called schematic if its rows form an association scheme with respect to Hamming distance. According to the construction method,this paper obtains association schemes for a class of orthogonal arrays .