查询词典 mathematical expectation

Consequently, the sensitivity of the input random variable of one neural network is defined as the mathematical expectation of the partial derivative in the probability measure space.

当神经网络的类型已知，各个输入变量的联合分布函数已知，就可以明确的求出神经网络对各输入变量的敏感性计算式。

The moving distance should be limited with the largest change rate of sink node coverage or the mathematical expectation of moving distance.

移动的距离可以采用以汇聚节点覆盖最大变化率限制移动方式和以距离的数学期望限制移动方式进行。

Through the introduction of Matrix operations described in mathematical expectation greatest expectations, Decision tree and the largest expected utility criteria for the application of mathematics in economic decision-making expectations of the important role.

通过引进矩阵运算，阐述数学期望在最大期望值法、树型决策法和最大期望效用准则中的应用，说明数学期望在经济决策中的重要作用。

In this paper, the basic options as a starting point, the approach of assuming the price of the underlying assets comply with the conditions of normal distribution, we discuss the options buyers were portfolio probability and loss function benefits the mathematical expectation of a meaningful result is derived.

本文以基本期权为起点，在假定基本资产期日的价格遵从正态分布的条件下，讨论期权组合的购买者获益的概率及其损益函数的数学期望，并导出一个有意义的结果

Not be rational, or subject to improvement, since our existing knowledge did not provide a sufficient basis for a calculated mathematical expectation of investment returns.

经济学家约翰-梅纳德-凯恩斯曾经说过市场行为不可能是理性的，也不可能改进。因为我们现有的知识不能为精确计算的预期投资收益提供充分的依据。

According to the queuing theory, the derived mathematical expectation of T, is related to four factors: session ratio, session duration, the speed of mobile node and the layer of MAP.

利用排队理论推导出会话阻塞率的数学期望公式，分析得到影响会话阻塞率的4个因素：会话频率、持续时间、节点的速度、MAP的层次。

The economist John Maynard Keynes argued that market behavior could not be rational , or subject to improvement, since our existing knowledge did not provide a sufficient basis for a calculated mathematical expectation of investment returns.

经济学家约翰。梅纳德。凯恩斯曾经说过，市场的行为不可能是理性的，也不可能改进，因为我们现有的知识不能为经过精确计算而得出的投资收益预期提供充分的依据。

So, this paper, based on mathematical expectation, brought up the concept of the positively correlated frequent itemsets, and improved the algorithm of mining frequent itemsets directly in FP-tree to mine positively correlated frequent itemsets. In this way, a solution to the above mentioned problems was got.

针对以上问题，基于数学期望，提出了正相关的频繁项集的概念，并改进了一种直接在FP-树中挖掘频繁项集的算法，挖掘出正相关的频繁项集，从而有效地解决以上问题。

Passage 10 13 The economist John Maynard Keynes argued that market behavior could not be rational, or subject to improvement, since our existing knowledge did not provide a sufficient basis for a calculated mathematical expectation of investment returns.

经济学家约翰梅纳德凯恩斯曾经说过，市场的行为不可能是理性的，也不可能改进，因为我们现有的知识不能为经过精确计算而得出的投资收益预期提供充分的依据。

Based on the interval probability and the second fuzzy probability, go a step further the definition and characters of random variables with the third fuzzy probability and the fuzzy distribution function and fuzzy probability distribution sequence were put forward.,the definition and characters of mathematical expectation and variance were studied also.

在区间概率和第二类模糊概率的基础上，进一步给出了具有第三类模糊概率的随机变量及其模糊分布函数和模糊分布列的定义和性质，并研究了模糊概率随机变量的模糊数学期望和模糊方差的定义和性质，进一步完善了模糊概率理论。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。