expected value

英 [ɪkˈspektɪd ˈvæljuː]

美 [ɪkˈspektɪd ˈvæljuː]

期望（预期）值

计算机化学

英英释义

noun

• the sum of the values of a random variable divided by the number of values
  Synonym:arithmetic meanfirst momentexpectation

双语例句

• So how do you calculate the expected value for your investment in a tool?
  那么如何计算投资某种工具的期望值？
• The problem is formulated as expected value model, and the objective function is to minimize the setup costs, production costs and inventory holding costs.
  建立了问题的期望值模型，目标函数为极小化生产准备成本、生产成本、库存成本的期望值。
• Study and Application of DEA Model Based on the Expected Value
  基于期望值的DEA模型研究及应用
• The weighted mean of the random variable is the expected value.
  随机变量的加权平均值是期望值。
• What is the expected value of these risks?
  这些风险的预期值是多少？
• The difference between an observed value and the expected value of a variable or function.
  一个受控变量的实际值和对应于给定的期望值之差。
• The expected value of the square of the deviations of a random variable from the point of origin.
  偏离原点的随机变量的偏差平方的期望值。
• A new method to count the expected value and variance of time dispersion is presented for time dispersion of underwater optical wireless communication.
  给出了一种计算水下无线光通信中时域展宽的均值和方差的新方法；
• Each assertion creates a constraint object under the hood which evaluates the expected value against the actual value.
  每个断言其实都在背后创建了一个约束对象，用来比较期待值和实际值。
• The expected value itself very rarely can help us.
  期望值本身很难帮助我们。