normal kurtosis 中文意思是什麼
normal kurtosis
解釋
正規峰態-
Because empirical distributions of rates of return on risky securities have characters of skewness and excess kurtosis, this article puts forward studying portfolio selection model conditional on non - normal stable distributions
摘要針對風險證券收益率的經驗分佈所具有的偏態和過度峰態等非正態分佈特徵，提出在非正態穩定分佈條件下研究投資組合模型。 -
The results of the experiment show that the peak value, rms, standard deviation, crest factor, kurtosis value and impulse value of the vibration signals can distinguish between the normal and abnormal conditions of the ball bearing when the level of noise is low
常用包絡解調技術對此類信號進行分析，但易受噪聲影響，使得齒輪或滾動軸承的故障特徵難以凸顯。本文從研究相關函數的特性入手，經理論證明，發現自相關函數並不改變調制信號的調制特徵，但具有顯著的降噪特點。
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