th derivative 中文意思是什麼
th derivative
解釋
階導數- th : 促甲狀腺激素
- derivative : adj. 導出的；派生的。n. 1. 派生物。2. 【語言學】派生詞。3. 【化學】衍生物。4. 【醫學】誘導法[劑]。5. 【數學】導數，紀數，微商。adv. -ly
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Th ere are three approaches to deal with this problem, which are introduced and compared in this thesis : one is to throw off the absent observations ; second is to replace the absent observations with the average of other observations ; and third can be called first derivative approach
即觀測值缺失問題，文章介紹並比較了三種處理這一問題的方法，分別是：去掉丟失觀測值法、平均值替代法（零階法）和一階法。
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