component extraction 中文意思是什麼

component extraction 解釋
元素提取
  • component : adj 構成的，組成的，合成的，成分的。 component motion 【物理學】分運動。 component part 組成部分...
  • extraction : n. 1. 抽出，拔出。2. 【化學】提取（法）；萃取（法）；回收物，提出物；精煉。3. 精選，摘要。4. 血統，家世，出身。5. 【數學】開方，求根。
  1. Through the complete analysisi of current research situation, identification frame work, and system component, acquisition and pretreatment of iris image, extraction of features, matching of features and evaluation of performance are discussed, and the problems of this technology, such as the difficulty of acquiring high quality images, and stability and feasibility to be testified are reviewed as well

    1987年眼科專家aransafir和leonardflom首次提出利用虹膜圖像進行自動虹膜識別的概念，但是他們並沒有開發出一個實際的應用系統。到1991年，美國洛斯阿拉莫斯國家實驗室的johnson實現了一個自動虹膜識別系統。
  2. In this scheme, hsv model & threshold segmentation method is used for contour line extraction, and the method combining automatic trace and manually trace is used for vectorization. finally, we use component interpolation to make dem data

    設計方案中用hsv模型結合閥值分割法實現等高線提取，使用自動跟蹤與手工相結合的方法完成等高線的矢量化，最後採用分量內插法生成dem數據。
  3. Rather, in this paper, two straightforward image projection techniques, termed image principal component analysis ( 1mpca ) and image fisher linear discriminant analysis ( imlda ), are respectively developed to overcome the weakness of the conventional pca and lda as applied in image feature extraction

    在orl標準人臉庫和nust603人臉庫上的試驗結果表明，與通常的主分量分析與線性鑒別分析方法相比，圖像投影鑒別分析與主分量分析技術將特徵抽取的速度提高了一個數量級以上。不僅如此，其識別精度依然高於傳統的eigenfaces與fisherfaces方法。
  4. In character recognition, we proposed a concept of " rough skeleton ", and developed a technique of skeleton extractin g based on non - thinning process of characters via three steps : character discomposed based component, local skeleton extraction and global skeleton connection

    根據骨架特徵，利用的圖論的理論與方法，我們提出了一種提取包括筆劃特徵與筆劃結構特徵的字元識別特徵的提取技術。
  5. In the paper, based on the existing literature research foundation an analog circuit catastrophic fault location approach by using feedforward networks with back ? propagation learning is realized. by this approach, the simulation require ments before test are reduced because fewer training samples are needed, and the fault location process is fast. this method is very efficient in location of single hard fault wit component tolerances. the measureme nt space feature and the general characterization concept of single and double soft fault in linear circuits are presented. according to this concept, a linear circuits soft fault location approach using subhidden layer bpnn is established with element tolerance, and it is shown that this approach is successful in fault location. a double fault feature extraction.,

    本文在現有文獻理論研究的基礎上實現了採用bp演算法前向多層神經網路對直流測試下模擬電路硬故障的診斷方法。其特點是採用少量典型特徵樣本作為bp網路的訓練樣本，獲得訓練樣本的代價小，減少了測前工作量，同時診斷速度快，在考慮元件容差時仍有好的診斷效果。文中介紹了線性電路單一軟故障和雙軟故障所具有的電壓增量空間特性和統一特徵概念。
  6. Kernel function optimization in kernel principle component analysis and its application to feature extraction of gear faults

    核主元分析中核函數參數選優方法研究
  7. It mainly includes following aspects : in this paper, firstly implication of wavelet analysis in signal harmonic component extraction is presented in detail, and on this foundation signal given frequency band component extraction method is proposed. then we investigate frequency aliasing phenomenon, reason why frequency aliasing phenomenon is easy happened when wavelet is implied in field of motor fault diagnosis, and frequency bands where frequency aliasing phenomenon is easer happened, and put forward approved morlet wavelet analysis method which can effectively alleviates frequency aliasing phenomenon. third we set up vibration signal detected system, design experiments to obtain three groups of fault signals : eccentricity fault, mixed fault of eccentricity plus mild rub, mixed fault of eccentricity plus moderate rub, and process these data using analysis method proposed in this paper

    首先對論文的選題以及相關背景進行了探討，並對相關的小波基礎理論進行了闡述，主要針對感應電動機的偏心故障和偏心+碰摩復合故障形式及相關的應用演算法進行了詳細探討，主要工作內容包括下面幾個方面:在論文中，首先對小波分析在信號的諧波分量提取中的應用進行了研究，在此基礎上，提出了信號的特定頻帶成分的提取方法;研究了小波分析的頻域混疊現象，探討了小波分析應用於電機故障診斷領域時易發生頻域混疊現象的原因，以及混疊現象較易發生的頻帶，提出了可以有效減輕頻域混疊現象的改進的morlet小波分析方法;搭建了振動信號檢測系統，設計實驗採集得到三組故障數據:偏心故障，偏心+輕微碰摩復合故障，偏心+中度碰摩復合故障，並對這些數據應用本文提出的分析方法進行信號處理，提取出的特徵參數可有效區分這兩種故障形式;研究了基於matlab和labview的混合編程方法，完成了電機故障檢測系統的軟體開發。
  8. Methods of utilization for molasses have been introduced in this paper, including simple utilization, such as feedstuff additive and concrete additive, and extraction of available component, for example sucrose, betaine and caramel pigment etc

    主要介紹了糖蜜的初級利用，即直接作為飼料添加劑和混凝土外加劑，以及從糖蜜中提取有效成份，如：蔗糖、焦糖色素、甜菜堿以及制備液體糖和紅糖粉的方法。
  9. For those biological signals like echo of bat or whale, as well as man - made system signals like radar or sonar signal, the instantaneous frequency of signal component contains important information and could be used for signal model parameters extraction. so that the proper choose of transformed domain and signal characteristic extraction method is of crucial important. the ridge extraction method used for signal characterization was first proposed in the 1990s, it ' s based on the study of the phase of the wavelet ( or other linear ) transform

    對于許多實際的信號，如蝙蝠發出的超聲波、鯨魚的叫聲等生物信號，以及雷達、聲吶等人造系統產生的信號而言，信號瞬時頻率的變化規律反映了信號重要的特徵，並且也是信號模型中關鍵的參數，因此選擇合適的變換域提取信號的瞬時頻率信息，並選擇合適的方法對信號進行重建是很重要的問題。
  10. Effects of different extraction methods on chemical component contents and pharmacological actions of yangxue ruanjian prescription

    不同提取方法對養血軟堅方的指標成分及主要藥效的影響
  11. The lab has established a multi - component counter - current extraction theory and solved the problems in rare earth separation technology and has successfully established a big separation plant of heavy rare earths in high purity and high yield in jiangsu province, thus controlling the world trade market of heavy rare earths

    1 .實驗室建立了多組分的串級萃取分離理論，解決長期以來我國重稀土分離技術的難題，成功地在江蘇省建成了一個高純、高效重稀土分離的大企業，控制了世界重稀土市場。
  12. Existing temporal component extraction method uses multiple regression analysis ( mra ) after the application of temporal pca to estimate the amplitude of resultant components and thus made it up

    現有的時間成分提取法在進行時間pca之後，利用重回歸分析來估計成分的波形和振幅，從而彌補了這一缺陷。
  13. In this paper, the influence of ultrasound on the solid - liquid extraction and the adsorption phase equilibrium were investigated by using the effective component - geniposide of the mature gardenia fruit as the experimental object

    本文以梔子果實中有效成分梔子甙為實驗對象，研究超聲波對固-液浸取、吸附相平衡、傳質過程的影響。
  14. Feature extraction through 2 - order polynomial fit of the descending part of the response curve made possible a timesaving measurement process. the performances of two pattern recognition algorithms, namely principal component analysis ( pca ) and linear discriminant analysis ( lda ) in practical problems were discussed. artificial neural network ( ann ) was utilized with back - propagation algorithm ( bpa ), and the combination of pca / lda with ann improved the identification performance of the system

    基於對模式識別系統的深入研究，提出了從響應階段數據提取特徵的方法，節省了測試所需時間；比較了主成分分析法（ principalcomponentanalysis ， pca ）與線性判別式法（ lineardiscriminantanalysis ， lda ）兩種模式識別方法在實際應用中的不同結果，分析了原因；設計了採用誤差反傳演算法back - propagationalgorithm ， bpa ）的前向人工神經網路（ artificialneuralnetwork ， ann ） ，並指出其應用中存在的問題，提出了改進建議；利用pca lda與ann相結合的方法改善了系統的識別性能。
  15. The main point of this project is to research the theories and applications of artificial neural network ( ann ) which is suitable for large scale science data mining. especially, our research focus include : dimension reduction techniques based on independent component analysis ( ica ) and wavelet - based denoising or compressing techniques for feature extraction in scientific datasets which have complex features ; classify and clustering techniques of ann combination with data grid, back - propagation neural network, self - growing multilevel self - organizing map for large scale knowledge founding in sdm

    特別深入研究以獨立分量分析（ ica ）為主的降維技術、以小波神經網路為主的壓縮降噪技術解決科學數據特徵復雜不便識別的問題;以同網格結合的神經網路、誤差反向傳播的bp神經網路、自適應多級自組織特徵映像網路為主的分類、聚類技術解決科學數據挖掘中的大規模知識發現問題。
  16. Linear projection analysis, including principal component analysis ( or k - l transform ) and fisher linear discriminant analysis, is the classical and popular technique for feature extraction

    線性投影分析，包括主分量分析（或稱k - l變換）和fisher線性鑒別分析，是特徵抽取中最為經典和廣泛使用的辦法。
  17. Independent component analysis has particular advantages in image processing. used for palmprint feature extraction, it can ensure the components to be irrelevant and statistical independent among each other, and can more roundly describe the essent.

    獨立分量分析方法在圖像處理中具有獨特的優勢，用於掌紋特徵提取，使得變換后的各分量之間不僅互不相關，而且還盡可能的統計獨立，能更全面的揭示掌紋特徵間的本質結構。
  18. To solve this problem, it ' s necessary to develop a spatial component extraction method so that the spatial component topography mapping sequence along the time course could be easily got into hand, even in a dense electrode array study

    為了解決這一問題，在採用密電極陣進行的研究中也能夠輕易得到隨時間變化的空間成分拓撲圖序列，我們有必要設計開發新的空間成分提取法。
  19. This study is backed by the research project of stimulus onset asynchrony ( soa ) detection, a newly devised multisensory erp experimental method. on the basis of spatiotemporal pca and existing temporal component extraction method, a spatial component extraction method was designed and materialized. detailed algorithm description, software development introduction and application example discussion were all presented

    本研究以一種新型的多感知erp實驗方法?異步刺激檢測法（ soadetection ）的研究項目為背景，以時空pca與現有的時間成分提取法為基礎，進行了空間成分提取法的演算法設計，並做了軟體開發及應用分析。
  20. Harmonic component extraction from a chaotic signal based on emd method

    方法的混沌信號中周期分量的提取
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