New converses for identification via arbitrary single-user and multiple-access channels, with finite first- and second-type probabilities of error, are developed. For the arbitrary single-user channel, it is shown that (/spl lambda//sub 1/, /spl lambda//sub 2/)-identification capacity is upper-bounded by /spl lambda/-capacity, and optimistic (/spl lambda//sub 1/,/spl lambda//sub 2/)-identification capacity is upper-bounded by optimistic /spl lambda/-capacity, for any /spl lambda/
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机译：开发了通过任意的单用户和多访问通道进行识别的新方法，具有有限的第一类和第二类错误概率。对于任意单用户通道，显示出（/ spl lambda // sub 1 /，/ spl lambda // sub 2 /）的识别能力以/ spl lambda / -capacity为上限，而乐观的（/ spl lambda // sub 1 /，/ spl lambda // sub 2 /）-对于任何/ spl lambda /
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