标题: 关于一个定义的解释，请求帮忙！ [打印本页] 作者: skysophie 时间: 2010-9-18 15:05 标题: 关于一个定义的解释，请求帮忙！ Definitions.-An arrangement of v objects (called treatments) in b sets6 h3 r" Y, ?) }" F1 P. O' c# x
(called blocks) will be called a pairwise balanced design of index unity and type 9 u+ ?- t$ j- T(v; ki, k2, .. ., ki) if each block contains either k1, k2, .. ., or km treatments which, |& x+ E: l" @ `, d% |7 V" w* B
are all distinct (k, < v, k, $ kj), and every pair of distinct treatments occurs exactly8 P2 |: i6 J, {' o3 D. V$ V: b
in one block of the design. If the number of blocks containing k, treatments is 6 u4 y; h7 s1 b) `' ~2 L. \0 ^b,, then clearly b = A bi, v(v-1) = i biki(k -1)。。。 3 G2 J! m5 s) D8 X 6 B( F/ Q! y* Q* l& S谁能帮我解释一下，可以举个简单的例子。。谢谢！~ " |6 G- c; b; g7 [作者: 角凳 时间: 2010-10-12 23:26
是告诉我们这是哪个领域的么？？
