離子層頂 的英文怎麼說
中文拼音 [lízicéngdǐng]
離子層頂
英文
ionpause- 離 : Ⅰ動詞1 （離開） leave; part from; be away from; separate 2 （背離） go against 3 （缺少） dispens...
- 子 : 子Ⅰ名詞1 （兒子） son 2 （人的通稱） person 3 （古代特指有學問的男人） ancient title of respect f...
- 層 : i 量詞1 （用於重疊、積累的東西 如樓層、階層、地層） storey; tier; stratum 2 （用於可以分項分步的...
- 頂 : i 名詞（人體或物體的最上部） crown; peak; top Ⅱ動詞1 （用頭支承） carry on the head 2 （從下面拱...
- 離子 : [物理學] ion
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According to the present status of studying the solar flare using gps, a new algorithm of processing gps data studying the solar flare is brought forward : after the instrumental bias has been determined, with the data of dual - frequency gps code and phase and navigation message, the vtec at the satellite ' s epp can be worked out
根據現在研究太陽耀斑的實際情況，提出了利用gps研究太陽耀斑的數據處理方法：利用雙頻觀測值確定出儀器偏差后，再利用碼和相位觀測值，結合導航電文就可以求出電離層交叉點的沿天頂方向上的電子總量vtec值。The basic idea for hierarchy - based method is that creating and maintaining a tree of clusters and sub - clusters according to some kind of criterion to measure the distance of clusters, the procedure will be sloped until some terminal conditions are satisfied. hierarchical clustering method can be further classified into agglomerative and divisive hierarchical clustering, depending on whether the hierarchical decomposition is formed in a bottom - up or top - down fashion. most hierarchical clustering methods can produce the better results when the clusters are compact or spherical in shape. but they do not perform well if the clusters are any shape or there are outliers. a main reason is that the most hierarchical clustering methods employ medoid - based measurement as distance between clusters
基於層次方法的聚類的基本思想足：根據給定的簇間距離度量準則，構造利維護一棵由簇利子簇形成的聚類樹，直至滿足某個終結條件為止。根據層次分解是自底向上還是自頂向下形成，層次聚類方法可以分為凝聚的（ agglomerative ）和分裂的（ divisive ） 。人多數層次聚類演算法在緊密簇或球形簇結構下能夠產生較好的聚類效果。
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