讨论了基于绝对差度量的灰阶图像识别问题；

The problem of gray scale image matchng based on absolute difference magnanimity is discussed.

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用绝对离差度量供电公司的购电风险，建立以风险最小化为目标的多市场购电组合优化模型。

Using the absolute deviation as a risk measurement index, a novel absolute deviation optimal purchasing portfolio model for multiple markets is built in risk minimization target.

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