另外，基于模糊变量的期望值算子做出新的评价标准用来评价信号的平均尖端度。
Besides, based on the expectation operator of the fuzzy variable, a new evaluation standard is established to estimate the average sharp degree of the signals.
提出了基于可信性理论的运行风险评估算法，采用随机模糊变量的期望值表示全系统的运行风险指标。
Based on the credibility theory, an algorithm for random fuzzy operational risk assessment is proposed, and power system operating risk is expressed by a random fuzzy expected value.
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