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 sets8 W& \2 z- Q: z' n
(called blocks) will be called a pairwise balanced design of index unity and type : U3 C- X) z* |: z(v; ki, k2, .. ., ki) if each block contains either k1, k2, .. ., or km treatments which 1 a* A4 M6 k$ f4 q7 f3 o! L2 W) ware all distinct (k, < v, k, $ kj), and every pair of distinct treatments occurs exactly * b r& J4 G6 g5 h; }" C) v' B" X& ]in one block of the design. If the number of blocks containing k, treatments is' n; f7 \; e6 p- F
b,, then clearly b = A bi, v(v-1) = i biki(k -1)。。。 2 L. ` I! |: t/ I( y+ U& h S- y) Z* m
谁能帮我解释一下，可以举个简单的例子。。谢谢！~$ D6 l0 b7 a4 L% s' e 作者: 角凳 时间: 2010-10-12 23:26
是告诉我们这是哪个领域的么？？
