expected frequency

Explaining how to use probability, occurrence frequency and expected values in quantifying risk.

解释怎样运用机率理论 、 发生频率及预期数值做风险数量的量度.

Based on the Bayes theorem we can calculate the expected future purchase frequency and average monetary value in a given customers' fast purchase behavior, and the customer's future economic value is the multiplication of these two expected values.

基于贝叶斯原理，在给定过去购买行为条件下我们可以计算顾客未来购买次数和平均购买金额的期望值，顾客的未来经济价值就是这两个期望值的乘积。

The pulse control strategy is to control pulse frequency based on expected voltage output frequency, so as to realize no system high frequency and avoid the PWM strategy.

脉冲控制策略以期望的电压输出频率控制脉冲频率，实现系统无高频，避免了脉宽调制。

The commonly used feature selection methods include Information Gain, Mutual Information,χ 2 statistics, Expected Cross Entropy, Word Frequency method, Document Frequency method, Text Evidence and so on.

首先要进行特征选择，常用的特征选择方法包括：信息增益、互信息、χ2统计、期望交叉熵、词频方法、文档频次方法、文本证据权等。

Time and frequency analysis on the separated signals is then conducted using Matlab toolboxes for time and frequency domain processing to extract diagnostic information, through which the expected signal is recognized, and characteristics of interference signals extracted.

然后使用Matlab中的时频工具箱，根据分离出的信号进行时频分析，提取信号中所包含的特征信息，达到能够识别出期望信号，并能提取其余干扰信号的特征。