For phase space reconstruction of ship - radiated noise , using auto correlation function and mutual information to select the delay - time , and using false nearest neighbors method to select the embedding dimension 從自相關(guān)函數(shù)及互信息嫡兩個(gè)方面討論了相空間重構(gòu)中延遲時(shí)間的選擇。
In order to reduce the disadvantageous influence of decision profiles ' scattering on fusion recognition , the decision profile is taken as target ' s feature vector and k - nearest neighbor method is applied to classify the target 為減少目標(biāo)決策分布圖散布對融合識(shí)別效果的影響,提出采用k近鄰方法對目標(biāo)的決策分布圖進(jìn)行分類,以實(shí)現(xiàn)融合識(shí)別。
This paper uses kriging method to estimate rainfall in drainage basin , gives the results of kriging interpolation method , and compares it with inverse distance square method and nearest neighbor method 為此,嘗試采用克里格方法對流域雨量進(jìn)行估值,并分別將年平均、月平均、時(shí)段雨量的插值結(jié)果與距離反比法以及最臨近法的插值結(jié)果進(jìn)行了對比性檢驗(yàn)。
The minimum embedding dimension can be determined by the false nearest neighbors method , and embedding dimension of determination component in noise condition can be determined precisely by this method which can avoid the phase space disturbance because of the higher embedding dimensions 采用偽最鄰近點(diǎn)法確定最小嵌入維數(shù),這種方法可以準(zhǔn)確地確定含噪信號(hào)中確定性成分的最小嵌入維數(shù),避免嵌入維數(shù)過高導(dǎo)致相空間的混亂。
A variety of methods including the tabular comparison of data , the tabular comparison of similarity coefficient , the nearest neighbor method and the group - average method of hierarchical agglomerative classification were applied to investigate the forest communities in meizi lake area 森林植被樣地中以喬木層樹種的重要值為指標(biāo),采用紙條排隊(duì)法、群落相似系數(shù)分類法、最近鄰體法、組平均法對梅子湖森林植被樣地進(jìn)行數(shù)量分類。