極值指數 的英文怎麼說

中文拼音 [jízhízhǐshǔ]
極值指數 英文
evi
  • 極 : i 名詞1 （頂點; 盡頭） the utmost point; extreme 2 （地球的南北兩端; 磁體的兩端; 電源或電器上電流...
  • 指 : 指構詞成分。
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 指數 : 1. [經] （比數） index number; index 2. [數學] exponent
  1. The authors put forwards a new method which select the terrain profile perpendicular to falling line ( opposite direction of gradient ) to determine the candidate points on ridge and valley

    摘要利用有關數學原理從理論上對地形高程斷面極值法進行了分析和深入的研究，指出了該方法的不足。
  2. By whitening the covariance matrix of flat ambiguity, correlation between ambiguity components, the number of local extrema of cost function is reduced. the search program getting into precocity is avoided by suitable encoding and genetic operation

    通過白化處理模糊度，減少模糊度搜索中指標函數的局部極值點，採用適當的編碼和遺傳操作使得在種群個體較少的情況下避免搜索陷入早熟。
  3. One is the evt - based var model ( including gev model and gpd model ), the other is the quantile regression var model. secondly, i evaluate predictive performance of a selection of var models for chinese stock market data. these var models include riskmetrics method, historical simulation, monte carlo method, and the three recent models based on quantile regression and extreme value theory

    本文首先重點探討了極值分佈var模型（包括廣義極值分佈和廣義帕雷托分佈兩個模型）和分位數回歸var模型；然後在此基礎上將六個var模型（包括上述三種模型、歷史模擬法、 riskmetrics方法以及蒙特卡洛法）實證應用於估計上證指數、上證180 、深證成指、深證綜指95 var和99 var ；同時採用區間預測法、損失函數法和符號檢驗法對這些var模型進行了選擇評估。
  4. Fast algorithms of both discrete and orthonormal wavelet and wavelet packet coefficient are diagrammatized to be introduced. daubechies wavelet is applied to help to discuss the application and test on signal filtering and noise reduction with the principle and threshold implementation ; the basic principle to pickup the fault characteristics is introduced mainly about the relations between the maximum module and signal saltation point and how to characterize the saltation point with lipschitz exponent

    展示了離散正交小波變換的mallat快速演算法和小波包系數分解的快速演算法；重點應用daubeches小波探討了小波變換在信號濾波去噪中的應用和實驗，闡述了其基本原理和通過閾值化處理實現濾波的具體方法；探討了用小波變換進行故障特徵提取的原理，說明了小波變換模極大值和信號突變點之間的關系以及怎樣用李氏指數來表徵突變點的性質。
  5. The covariance analysis indicated that the difference was significant between the intercepts in the regression equations, but not between the slopes

    協方差分析表明，各回歸方程的斜率（體重指數b ）之間差異不顯著，截距a值差異極顯著。
  6. Asymptotic distribution ; consistency ; extreme - value index

    漸近分佈相合性極值指數
  7. It is proposed that a new estimator of the extreme - value index when it is negative that is similar in form to the pickands estimator. its consistency and asymptotic distribution is established

    提出一類極值指數為負時的相似於pickand s型的新的極值指數估計量，並建立它的相合性及漸近分佈。
  8. Quality besides micronaire value and elongation of relevance not significant, other quality traits of both showed significant level ; yield and quality traits associated single boll weight and the first half of the average length uniformity index significantly related, and the breaking strength of correlation was significant, and micronaire value was negatively correlated ; lint and micronaire value elongation reached significant levels and a very significant level, and on average half the length uniformity index, breaking strength of correlation was significant but was negatively correlated

    品質性狀間除了麥克隆值與伸長率的相關性不顯著之外，其餘品質性狀間均呈現出極顯著水平；產量性狀與品質性狀的相關性中單鈴重與上半部平均長度、整齊度指數相關性顯著，與斷裂比強度相關性極顯著，與麥克隆值呈負相關；衣分與麥克隆值、伸長率分別達到顯著水平和極顯著水平，與上半部平均長度、整齊度指數、斷裂比強度等相關性極顯著但呈負相關。
  9. The asymptotic normality of the extreme - value index of extended moment estimator

    極值指數之推廣矩估計量的漸近正態性
  10. Abstract : the sample breakdown point of a test is defined as the smallest proportion of arbitrary outlier in the sample that reverses the test decision. in this paper, wegive the sample breakdown point of a test for maximum likelihood estimate of exponential distribution parameter and analyze the asymptotically normal characteristic of the sample breakdown point

    文摘:如何量化一種統計方法對異常值的不敏感性一直是穩健統計研究的一個重要課題.檢驗的樣本崩潰點是樣本中能逆轉判決的離群值的最小比例.在研究相關文獻的基礎上，計算出指數分佈參數極大似然估計檢驗的樣本崩潰點，並分析了樣本崩潰點的漸近正態性，為量化統計方法的穩健性提供了一種新的途徑
  11. A full mathematical model of optimal flow pattern design withengineering constraints was put forward, based on modern optimal control theory. an optimal flow pattern design was presented for optimizing meridional channel of axial flow turbine. according to integral optimization of turbine stages, a full physical model and mathematical expression were put forward for proposition of optimal flow pattern, including all performance parameters in turbine stages. this problem was further recast into a typical form control to maximize specific performance index such as work or efficiency of stage with given initial state, fixed terminal condition and constraints for part of state terminal variables. the program was also worked out according penalty function method and conjugate gradient method. the optimal distribution of c1ur1 ( r1 ) was obtained according to constraint conditions and maximized objective function

    把近代最優控制論方法引入軸流透平葉片的設計，在優化的軸流透平子午通道內，建立包括透平級內所有性能參量的最優流型命題的完整的物理模型及其數學表達式，並歸化為一個在給定初始狀態、自變量終端固定、部分狀態變量終端受有約束的條件下，使級的某一性能指標（如級的功率）達到最優的最優控制問題，應用「代價函數法」及「共軛梯度法」編制計算程序，計算得到符合給定約束條件、並使目標函數取極值的最優環量分佈，結果是令人滿意的。
  12. Firstly, the author evaluated the fund through the technology and tested it with examples. basted on the capital asset pricing model and the theory of portfolio, the paper used the ratio of profit according time to evaluate the profit ; used the a and 3 to evaluate the risk ; used the sp, tp, a p to evaluate the profit according to the risk ; used the ability of liquid and so on to evaluate the fund portfolio. otherwise, the author corrected the asset of fund according to the specialty of our country

    技術面評價以證券投資組合理論和資本資產定價模型為基礎，運用時間加權收益率對基金收益進行評價；運用系數、系數對基金風險進行評價；運用夏普指數、特雷納指數、詹森指數、積極投資效率指數對基金進行收益和風險配比評價；運用基金平均市盈率、股票集中度、股票日換手率、基金流動性和基金平均漲幅對基金進行組合質量評價；並根據我國股市的特點對基金凈值進行修正計算，對基金實際價值進行評估。
  13. From the se algorithm, the relationship between the local minimum and the equalizer delay is demonstrated, and it is more accurate compared to the system delay relation formulation

    ?圍繞線性均衡器的時延極小值問題，從超指數演算法推導了線性均衡器相對于均衡器時延的極小值關系，修正了線性均衡器相對于系統時延的關系式。
  14. The matching rate of the suggested two methods were compared for the assembly size chaims with different number of the forming links, with different number of the forming link parts, and with different deviation distribution types on the assumption that the closing link tolerance of the selective assembly is a tenth of that calcalated by the extremum method

    以不同組成環數、不同組成環零件數、不同偏差分佈類型的裝配尺寸鏈為研究對象，取選擇裝配的封閉環公差為按極值法計算所得封閉環公差的十分之一，以匹配率為評價指標，比較了兩種方法的優劣。
  15. Along with a price limit and capital requirement, the existence of a margin decrease the likelihood of a customer defaulting, a broker going bankrupt and systemic instability of the futures market. this paper applies sub - theories of generalized pareto distribution inherited from extreme value theory to examine the margin policy for price extremal movements

    本文運用極值理論的廣義帕累托分佈（ gpd ） ，對以上證180指數和深證100指數為標的的股指期貨保證金進行了研究，並且將之與正態分佈假設下的保證金水平進行比較。
  16. Some properties of the generalized pareto distribution are discussed. then gp model is used to analyze the returns to shanghai stock index, shenzhen stock index and the stock prices of two specific companies. a quantitative indicator of extreme changes in stock index and stock price is mentioned. the estimation of value - at - risk is also discussed

    討論了gp分佈模型的某些性質，利用此模型對上證指數深證指數和2家公司股票價格的收益率進行分析，給出股票指數和價格極值波動程度的量化指標和風險值var的估計值。 。
  17. With the usage of degree theory in [ 1 ], calculating indices of fixed points of compact maps in cones of [ 2 - 10 ] and combining with bifurcation theories [ 11 - 19 ], maximum principles [ 17 ] [ 19 ], lower - upper solutions methods [ 20 - 22 ] and spectrum analysis of operators [ 23 - 24 ], we get some results of the coexistence solutions for modell in the first section. the results can be seen extensions of [ 7 ] [ 23 ]

    利用文獻[ 1 ]中度理論、 [ 2 - 10 ]中錐映象不動點指數方法，並結合分歧理論，極值原理，上下解方法和運算元譜分析等，在文中第一部分討論了其平衡解的存在性，部分推廣了文獻[ 7 ] [ 23 ]的結論。
  18. Basic index and reliability principle of steel structure, and geometric significance are analyzed. the main computation methods, such as two order moment method, separation function and separation item coefficient, linear separation, and central point, check point, monte - carlo are presented. reliability analysis under relative variable, boundary determination ( single and double boundaries ) is analyzed

    研究了鋼結構可靠度基本原理、可靠指標的幾何意義，分析了鋼結構可靠度計算的一次二階矩方法、分離函數和分項系數法、線性分離法，以及中心點法、驗算點法、蒙特卡羅（ monte - carlo ）法，提出了變量相關情況下的結構可靠度分析方法、可靠度界限分析方法（單側界限與雙側界限） ，基於極值分佈的可靠度分析，並對鋼結構動力可靠度分析方法進行了初步探討。
  19. This paper is concerned with the time - spatial characteristics of summer extreme precipitation over eastern china and with the teleconnection between summer extreme precipitation and sst of the north pacific and soi, based on the daily rainfall data of 59 stations from 1951 to 2000

    本文利用我國東部（ 105e ~ 0以東） 59個測站1951 - 2000年的夏季逐日降水資料對我國東部夏季降水極值的時空特徵及其與北太平洋海溫和南方濤動指數（ soi ）的遙相關進行研究。
  20. Threshold selection in tail index estimation based on exponential regression model

    基於指數回歸模型的極值指數估計的門限選擇
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