expectation value

表示随机变量的平均值

常用释义

词性释义

期望值:在概率论和统计学中,表示随机变量的平均值,是对该随机变量的所有可能取值的加权平均。
例句
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1·The term expectation value is often used instead of average value.
期望值这个名称常用来代替平均值。
2·Discusses the consulting organization's expectation value, user's expectation value and the real exchange price of information consulting service.
对咨询服务价格的咨询机构期望值、用户期望值和实际交换价格进行讨论。
3·Whether college students expectation value is reasonable may directly influence the graduates attitude to choice of jobs and employment after graduation.
大学生就业期望值是否合理,直接影响毕业生择业、就业的态度。
4·The expectation value of an observable bridges a quantum quantity with a certain classical quantity, but one must pay attention to the way of the bridging.
一个可观察的期望值桥梁一个具有一定的古典数量的量子数量,但一定要注意衔接的方式。
5·Build mathematical model of quantitative analysis, confirm the expectation value of light intensity, build standard work curve, improving analysis precision.
建立定量分析数学模型,确定光强值,建立标准工作曲线,提高分析精度。
6·Age and gender factors have significant influence on individual risk decision-making, when in the profit situation which is added to loss expectation value of small probability.
在加入小概率损失期望值的获益情景中,性别、年龄因素对个体风险决策有显著影响。
7·This is reflected in the fact that the vacuum expectation value of the field squared is nonzero in quantum field theory. Therefore there exist the so called vacuum fluctuations.
这反映在量子场论中场量平方的真空平均值不为零,这就是所谓的真空涨落。
8·Age and entrepreneurial intention have significant influence on individual risk decision-making, when in the loss situation which is added to profit expectation value of small probability.
在加入小概率获益期望值的损失情景中,年龄和创业倾向对个体风险决策有显著影响。
9·In the quantum statistical theory, the density operator is introduced in the statistical system. The expectation value of an obeservable can be obtained by the use of the density operator.
在量子统计中,对统计系综引入了密度算符,力学量的平均值可以利用密度算符求出。
10·A weighted critical path algorithm was provided to calculate the expectation value of the workflow's duration, record the process of reduction, and identify the time-oriented critical path.
通过加权关键路径算法,可以计算工作流完成时间的期望值及记录约简过程中的中间结果,从而确定工作流模型的关键路径。