relative frequency
英 [ˈrelətɪv ˈfriːkwənsi]
美 [ˈrelətɪv ˈfriːkwənsi]
网络 频率; 相对频数; 相对频率; 相對次數; 相对次数
英英释义
noun
- the ratio of the number of observations in a statistical category to the total number of observations
双语例句
- Both theory and numerical computation show that the error of active power and power factor measurement is proportional to the relative frequency deviation when the conventional algorithm is used, while it is proportional to square of the relative frequency deviation when the proposed weighted algorithm is used.
传统算法的有功功率、功率因数的测量误差与相对频偏成正比；而用该文所提出的三角窗加权算法，有功功率、功率因数的测量误差与相对频偏的平方成正比。 - The text feature selection methods are introduced, analysed and researched, including information gain, mutual information, 2 statistics, document frequency, low loss dimensionality reduction, relative frequency difference.
对文本分类的特征选择方法，包括信息增益、互信息、2统计量、文档频率、低损降维和频率差法等做了详细介绍、分析、比较研究。 - A virtual arbitrary waveform generator in DDS is introduced, in which FPGA is used for the digital circuits and memory carriers in Quartus, the constant high relative frequency precision can be realized in the low frequency area.
Quartus环境以FPGA为数字电路和存储体载体，运用DDS技术虚拟实现任意信号产生，并在信号低频段仍能保持恒定很高的频率相对精度。 - Two classification systems of depositional sequence hierarchies are respectively presented, which are based on the relative frequency and relative magnitude of base level changes.
沉积层序的级别有2种划分系统，分别以基准面变化的相对频率和相对振幅为基础。 - According to the school level, we divided them into early, middle and senior three stages, respectively by applying the method of correctly using relative frequency statistics from each stage of the acquisition sequence.
按照学时等级分为初、中、高级三个阶段，运用正确使用相对频率法分别统计出每个阶段的习得顺序。 - At the same time, a track control function and adaptive control algorithm to reduce the relative frequency of the rudder roll, the failure rate and maintenance costs are reduced, while also increasing the safety of the ship.
同时由于具有航迹控制功能和自适应算法，使动舵次数相对减少，降低了舵机的故障率及维修费用，同时也增加了船舶航行的安全性。 - When Coping with simple problems, most of the teachers calculated probability by permutations and combinations or by analyzing the tree diagrams, rarely by designing simulations to estimate probability by relative frequency.
对于比较简单的问题，教师主要采用排列组合方法或作树状图等计算概率，很少设计模拟试验用频率估计概率，高中教师理论分析的成功率高，但是没有一个人提到用频率估计概率。 - In this paper, authors advised a new method calculating the cumulative relative frequency, to study frequent distribution of plant size in the population. To investigate the distribution and frequency of symptoms in manic-depressive disorder.
提出了在解析植物群体的直径分布时不划分直经阶，直接求累计频度的方法；目的调查住院躁狂和抑郁症的症状分布和频度。 - The relative frequency polygon has the same shape as the frequency polygon made from the same data set but a different scale of values on the vertical axis.
根据同一资料绘制的相对频率多边形与频率多边形的形状是相同的，只是纵轴上的标尺不同。 - After the calculation of the relative density, relative frequency and relative dominance, the importance value of the species was calculated. The importance of the species in the niche was judged by the important value.
据所调查的数据计算出不同生境各个树种的相对密度、相对频度、相对优势度及重要值，根据重要值的大小来判断该种群在该生境中的地位和作用。