随机信号分析 第三章(16)

国家重点实验室

一、平均代价的概念和贝叶斯准则

2. 平均代价的计算由

C (H1 ) = c01 P(H 0 H1 ) + c11 P(H1 H1 )

C (H 0 ) = c00 P (H 0 H 0 ) + c10 P (H1 H 0 )

C = P(H 0 )C (H 0 ) + P(H1 )C (H1 )

C = P(H 0 )(c00 P(H 0 H 0 ) + c10 P(H1 H 0 ))

+ P(H1 )(c01 P(H 0 H1 ) + c11 P (H1 H1 ))