由于结构突变的存在会影响数据平稳性的检验结果,导致在进行协整分析时得出错误的结论。
Since the existence of structural shifts would bias the result of stationary test, which could lead to mendacious result in cointegration analysis and misleading conclusions.
研究表明影响分维估计精度的主要因素有四种:数据点数、数据概率分布、数据平稳性、无标度区。
Main factors influencing precision of fractal dimension computation include number of data, distribution of data, stationarity of data, no scale area.
单位根检验是计量经济学中检验时间序列数据平稳性的最重要工具,而协整检验则是用来判断非平稳变量之间是否存在长期均衡关系的常用方法。
As an important tool of testing time series stationarity, unit root test is always used, and cointegration test is also often implied for judging long equilibrium between nonstationary variables.
统计数据可能带有误导性,在那些年降雨量充沛并且平稳的地方,管道用水需求将比较低。
The statistics can be misleading: in places where rain falls copiously and evenly from the skies, withdrawals will be small.
动态测量是随测量时间而变化的非平稳随机过程,动态测量数据具有时变性、随机性、相关性和动态性四个基本特性。
The dynamic measurement is a non stationary random process varying with the measuring time. The dynamic measuring data have the characteristics of time variation, randomness, correlation and dynamic.
第一部分介绍飞行器实测振动数据的平稳性、周期性和正态性检验的几种方法;
The first deals with several i methods used to test stationarity, periodicity and guassianity of the recorded data of aircraft vibration.
结果表明,论文提出的从随机数据的平稳性和信噪比两个方面去评价桥梁环境振动响应信号质量是可行的,可以较好地评价实桥信号的质量。
The experimental results show that from stationary and SNR of two aspects on random data to evaluate the measured signal quality is feasible, can evaluate the real bridge signal quality preferably.
为进一步提高系统运行时的平稳性,在粗精两级插补的基础上,提出了将插补后的数据进一步细分的算法。
On the basis of two level interpolation (rough and fine interpolation), an algorithm for subdivision of the result is put forward to get the system run more smoothly.
然而石油期货价格具有时间序列数据的典型特点,即非线性和非平稳性,这给价格的预测带来了极大的困难。
However, the oil futures prices involve the typical characteristics of time series data, nonlinearity and nonstationarity, which brings insuperable difficulties in the price forecasts.
第三,对于小样本数据的非平稳性,没有一个合适的处理方法。
Third, there is not an appropriate approach to deal with the non-stationary of small sample data.
应用信号处理相关处理方法对数据进行预处理,时域、频域分析,进行平稳性指标、舒适度计算,得出相关处理结果,输出报表。
Use relative signal processing method to pre-processing data, make time domain and frequency domain analysis, calculate the ride index and comfort, obtain relative results and export reports form.
应用信号处理相关处理方法对数据进行预处理,时域、频域分析,进行平稳性指标、舒适度计算,得出相关处理结果,输出报表。
Use relative signal processing method to pre-processing data, make time domain and frequency domain analysis, calculate the ride index and comfort, obtain relative results and export reports form.
应用推荐