principal vector 中文意思是什麼
principal vector
解釋
指量-
The virus is transmitted by the bites of infected mosquitoes. culex tritaeniorhynchus is the principal vector of the disease
此病由日本腦炎病毒引致，給帶病毒的蚊子叮咬就會染病。 -
The modified zndx in comparison with others is well indicative of the severity and extent of flood / drought event and of more objective classification of them, which is therefore quite applicable to a extended area. ( 3 ) the main anomaly structures of grades of drought / food in summer over northwest china present pluvial pattern and dry pattern in all the areas, and spatial changes are opposite pattern from the noth to the south and the west to the east. the first four rotated loading vector fields represent four principal precipitation anomaly areas : the weishui river basin, east of the qinghai - xizang plateau
但修訂過的zndx指數根據氣溫、土壤濕度及前期氣候濕潤度等因子能夠客觀的反映出西北地區的旱澇特徵。 （ 3 ）西北地區季與年區域旱澇等級表明：西北地區的乾旱雨澇有顯著的階段性和年際變化特徵。 1980 』 s到1990 』 s中期，氣候較濕潤，土壤濕度增墑較明顯； 1990 』 s中期以後是40年乾旱最異常的時段； 1960 』 s旱澇交替發生，旱澇趨勢接近常年； 1970 』 s氣候雖乾旱，但沒有1990 』 s中後期顯著。 -
If a document is viewed as a combination of basis topics, and every basis topic is represented by a related vector, then it can be categorized as belonging to the topic represented by its principal vector. thus, nmf can be used to organize document collections into partitioned structures or clusters directly derived from the nonnegative factors
如果將一篇文檔看作是由許多文本主題組合而成，而文本主題與語義空間的特徵向量相對應的話，則我們可以直接根據nmf演算法所提取的特徵向量及相對于特徵向量各文檔的編碼向量將文本集劃分成不同的類。 -
Different from other rank reduction methods, such as pca ( principal component analysis ) and vq ( vector quantization ), nmf ( nonnegative matrix factorization ) can get nonnegative, sparse basis vectors which make possible of the concept of a parts - based representation
與pca （主分量分析）和vq （矢量量化）等降維演算法不同， nmf （非負矩陣分解）演算法能夠分解出非負的，稀疏的特徵矩陣和編碼矩陣，能夠提取原始數據向量的局部特徵，使基於局部特徵進行分類的聚類演算法更容易實現。 -
The principal vector of je, culex tritaeniorhynchus breeds in water - logged abandoned fields, rice fields, marshes and water collections around cultivated fields
（三）日本腦炎的主要病媒是三帶喙庫蚊，它們在積水的荒田、稻田、沼澤和耕地周邊的積水處滋生。 -
The algorithm firstly calculates the nonlinear principal poly line go through the middle of trained samples of hyperspectral image, and then classifies every pixel by projecting the spectral vector of the pixel on the principal poly line
建立了一種基於非線性主折線的分類演算法，該方法將利用訓練樣本數據，構造非線性主折線，通過判斷原始數據在主折線上的投影對像元進行分類。 -
Integrating kernel principal component analysis with least squares support vector machines for time series forecasting problems
基於核主成分分析與最小二乘支持向量機結合處理時間序列預測問題 -
Second, using the method of wavelet - transform, extract the stable second - low frequency wavelet coefficient, build face database. third, for the sake of eliminating the correlations between entities of the image vector and extracting character - vector, which keeps the main class - information and can be used to rebuild original image, the principal component analysis ( pca ) was used
對人臉庫進行主成份分析，此方法根據人臉圖像整體的灰度相關性來提取特徵向量，所提取出的特徵向量保留了原圖像空間中的主要分類信息，並能在均方誤差最小的意義上重建原圖像。 -
We adopt another fault diagnosis method for the checking of polluted mycelia in the microbiological fermentation process. the method combines nonlinear principal components analysis technology with support vector machines to construct multi - layer support vector machines. the multi - layer support vector machines are able to extract main monitoring variables from many process variables, also obtain decision function with excellent generalization performance from limited samples of fault
在這里採用了另一種故障診斷方法，即把主元分析同支持向量機結合起來，這樣既可以從過多的監測變量中提取出主要的監測變量，又可以從有限的故障樣本得到具有較強推廣能力的決策函數。 -
A new method for the splicing - site recognition of rice dna sequences was designed. based on the gt - ag intron organization principal, support vector machines ( svm ) was used to predict the splicing sites. through machine learning, a model was built on some test data set of true and pseudo splicing sites
根據真核生物內含子在剪切位點前後存在保守堿基的特徵，用支持向量機技術構建分類器模型，有效地在基因組序列中識別剪接位點， 3位點識別的準確度87 . 96 ，在5位點識別的準確度達85 . 41 。 -
Furthermore, residual interference is analyzed. in chapter six, principal component, cross - spectral metric, auxiliary - vector filtering and multistage wiener filtering are applied to study low - rank blind space - time multiuser detection with the generalized canonical representation in multipath channels
第六章基於最小方差盲空時多用戶檢測的廣義正則形式，利用主成分方法、互譜度量方法、輔助向量濾波和多級維納濾波，研究了多徑條件下的低秩盲空時多用戶檢測。 -
The vector chart and mathematical programming model between the principal and agent are founded according to analyzing the principal - agent relationship from the perspective of the operational research
從運籌學角度討論了管理平臺中的委? -代理關系，構建了委?方和代理方的合作矢量圖和數學規劃模型。 -
Mosquitoes which are infected with a dengue virus. it cannot be spread directly from human to human. in hong kong, the principal vector
登革熱透過帶有登革熱病毒的雌性伊蚊叮咬而傳染給人類，此病並不會經由人與人之間傳播。
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