expected value
期望值
常用释义
英式发音
美式发音
基本释义
- 期望值：随机变量的每个取值乘以其出现概率后的总和，或者是连续随机变量的概率密度函数与随机变量本身的乘积在所有可能取值上的积分。
例句
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1·Since this is a concave function, it's not just the expected value.由于这是一个凹函数，它不仅仅是期望值。
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2·We have expected value, mean or average.我们可以用期望值，或者是平均值。
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3·What is the expected value of these risks?这些风险的预期值是多少？
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4·The more search, the higher the expected value of reward;寻找越多，预期回报价值就越高；
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5·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。
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6·If the expected value is 10.5 or -107.82, then 0.02 is probably fine.如果预期值是10.5或- 107.82，则0.02是完全可以接受的。
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7·We want a high expected value of returns, but we don't like variance.我们希望收益的期望值较高,并且稳定
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8·The expected value of a startup is the percentage chance it's Google.对于一个创业公司的期望价值就是它成为Google的机会百分比。
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9·The higher the expected value of the reward, the higher the satisfaction;预期回报价值越高，满意度就越高；
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10·The bump claimed in the abstract is 30 times bigger than the expected value.在摘要中称爆炸比预期值高出30倍。