trend component meaning in English

趋势分量

( 4 ) the theory and methods of wavelet analysis are introduced to the observation data analysis for dam safety , and the methods for detecting outliers , abstracting trend component , and denoising and detecting missing data by use of wavelet is developed . examples show that the methods are effective
（ 4 ）将小波分析理论及方法引入大坝安全监测资料分析中，提出了利用小波分析检测异常值、提取趋势分量、降低噪声、检测缺失值的方法，通过实例验证了小波分析方法的有效性。
The paper decomposes the visitor ' s flow sequence made of different frequencies into the low and high frequencies in the multi - resolution analysis according to the characteristic of visitor ' s flow sequence frequencies and then restores the trend components according to the reconstruct principle of wavelet coefficients , in order to deduce the visitor ' s flow trend
摘要根据旅游流量的频率分布特性，运用小波分析将不同频率成分组成的时间序列分解成低频和高频成分，然后依据小波系数的重构原理还原时间序列的趋势成分，判断旅游流量时间序列的趋势变化。