正定協方差 的英文怎麼說

中文拼音 [zhēngdìngxiéfāngchā]
正定協方差 英文
positive definite covariance
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 定 : Ⅰ形容詞1 （平靜; 穩定） calm; stable 2 （已經確定的; 不改變的） fixed; settled; established Ⅱ動詞...
  • 協 : Ⅰ形容詞（共同） joint; common Ⅱ動詞（協助） assist; help; aid
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 差 : 差Ⅰ名詞1 （不相同; 不相合） difference; dissimilarity 2 （差錯） mistake 3 [數學] （差數） differ...
  • 方差 : dispersion
  1. In collaboration with the department of physicis and material science of the city university of hong kong and the electronic and engineering department of the chinese university, the faculty of medicine has conducted research on different aspects of computer - aided navigation such as brain shift prediction with finite element model, three - dimensional ultrasound based correction for brain shift, accuracy verification, robotic system, surface identification and matching

    通過與香港城市大學物理及材料科學系及香港中文大學電子工程學系的協作，我們正發展電腦輔助的神經導航技術的多方面研究，例如，採用有限元模型預測腦偏移；除去腦偏移的誤差的立體超聲檢查技術；手術準確性的證實；腦表面區域的定位。
  2. Backed up by the soplat theory based on particle kinematics, the second chapter of this paper presents with analysis and simulation of several single observer passive measurement models, which uses such relative movement parameters as bearings changing rates and centrifugal acceleration information on the basis of bearings measurements. in the third chapter, the observability of location respectively using bearings and its changing rates information and centrifugal acceleration information is analyzed, and its observable condition is got. the fourth chapter puts forward the modified covariance extended kalman filtering ( mvekf ) against the defect of traditional extended kalman filtering ( ekf ), whose performance is simultaneously compared in the chapter with the performance of ususal tracking algorithm such as ekf, mgekf, iekf by computer simulation

    在近年來提出的基於質點運動學原理的單站無源定位理論基礎上，本文第二章提出了幾種在角度測量的基礎上增加角度變化率及相對運動的離心加速度等運動學參數的單站無源測量模型，並對它們進行了分析和模擬；第三章分別對利用角度及其變化率信息定位和利用離心加速度信息定位的可觀測性進行分析並得到了相應的可觀測條件；第四章針對傳統擴展卡爾曼（ ekf ）方法的缺點，提出了一種修正協方差的擴展卡爾曼濾波（ mvefk ）方法，並將其和ekf 、 mgekf 、 iekf等常用的單站無源定位濾波方法進行了性能模擬比較；第五章通過引入雷達機動目標跟蹤方法和模型，提出了利用角度及其變化率對機動輻射源跟蹤的多級噪聲自適應方法和imm方法；第六章主要對角度變化率和離心加速度參數的獲取技術進行了研究，提出了幾種高精度測量脈沖序列多普勒頻率變化率的方法。
  3. For the given sample points, and matrix formed by covariance function with sample points as parameters, when the number of sample points approaches infinite, it is proven that this matrix spectrum will approach the spectral approach theorem for positive - definite kernel of integral equation

    對給定的樣本點，由樣本點為變量的協方差函數構成的矩陣，當樣本點個數趨于無窮大時，證明此矩陣譜逼近於積分方程正定核的譜逼近定理。
  4. We proof the covariance function of covariance stationary processes is equivalent with mercer kernel function. that is, the covariance function of covariance stationary processes is a mercer kernel function ; in reverse, for a given mercer kernel function, there exists a covariance stationary processes, and the covariance function corresponded to this covariance stationary processes is the given symmetry positive - definite kernel function. it means that the covariance function is equivalent to symmetry positive - definite kernel function

    首先建立了協方差平穩過程的協方差函數與積分方程中對稱正定mercer核函數的等價關系，即協方差平穩過程的協方差函數是對稱正定mercer核函數，反過來，對給定的對稱正定核函數，證明了存在協方差平穩過程，使得此協方差平穩過程對應的協方差函數恰好為給定的對稱正定核函數，這說明協方差函數和對稱正定核函數是等價的。
  5. By the definition of incremental error quaternion in the propagation equation of the full rank covariance matrix is derived, consequently the singularity of the covariance matrix caused by the constraint on the quaternion normalization is maintained

    並且通過定義增量誤差四元數，推導出滿秩空間中誤差協方差陣的傳播方程，解決了由於四元數正交約束所造成的協方差陣奇異性問題。
  6. Secondly, the author firstly demonstrates that the demand regulatory policy could keep the currency value correspondingly stable and make economy go up more quickly, employing the image diagram of curves. and then the author effectively demonstrates that the relativity of between price, output and monetary aggregates is closer, employing co - integrated theory, the vec ( vector error correction ) model and the variance decomposition method for analyzing quarterly data from 1996 to the third quarter of 2005

    其次，在運用形象的曲線圖分析現階段需求管理政策可以使我國在保持幣值相對穩定的條件下實現經濟較快增長的基礎上，運用協整檢驗、 vec （向量誤差校正）模型和方差分解方法分析了1996年以來貨幣供應量、物價和產出的季度時間序列，有力地論證了貨幣供應量與物價、產出間具有較強的相關性。
  7. There are some differences between tax law and tax treaty. although many measures are taken to strengthen the administration of the income tax on foreign enterprise, there is still a long way to go

    我國稅法和稅收協定之間在常設機構、特許權使用費、財產收益等方面存在差異，在實際征管工作中，只有熟悉這些差異，才能真正做到依法征稅。
  8. The third part is the core of paper, which mainly includes the determination of i & e elastic model and data selection, the data unit root test, co - integrated test, the vector error correction model as well as the relations between real effective exchange rate and the economic growth of the research on these aspects

    第三部分即論文的核心。主要包括進出口彈性模型的確定與數據的選取，數據的單位根檢驗，協整檢驗，誤差修正模型的建立以及實際有效匯率與經濟增長關系的研究這幾個方面。
  9. For example, w. rostow considered that the growth of economy was aroused by leading industry, and industrial structure took a very important role in the economy growth ; h. chenery considered that industrial structure and economy growth had a bidirectional causal relation ; however, the most influencing theory was brought forward by s ? kuznets, who considered that it was economic growth which caused the variance of industrial structure advancement, etc. according to cointegration theory and granger causality theory, this paper, based on the summary of multitudinous scholars ’ research literature, carries a positive analysis to the relationship between industrial structure and economic growth, using the time serial data from 1978 to 2003 by

    分析結果驗證了配第?克拉克定律的正確性即經濟的增長是就業人口向第三產業轉移的原因，但卻否認了庫茲涅茨的收入決定論，即至少在我國，產業結構的演進是經濟增長的原因而不是相反。同時，本文還原創性地論證了，我國的經濟增長與產業結構之間存在惟一的動態均衡關系即協整關系，產業結構與經濟增長之間短期波動與長期均衡關系存在於根據協整方程建立的向量誤差修正模型之中。
  10. Then, sage adaptive filtering usually used in kinematic gps navigation and positioning and its shorcoming are analyzed. the weights of measurement residuals and state correction residuals are modified according to the self - correlation property of colored noise and robust estimation. the procedure of weighte d prediction of covariace matrix not only resists the influence of outlying kinematic model errors, but also controls the effects of measurement outliers

    然後，分析了目前常用於有色噪聲處理的sage自適應濾波及其在動態gps導航定位應用中的缺陷，並依據有色噪聲的自相關特性和抗差估計調整觀測殘差和狀態改正數的權比，再通過加權預報控制殘留在其中的異常對協方差矩陣自適應估計的影響。
  11. Through the i 、 q component of ipix radar sea clutter data " s histogram analyses and by skewness and kurtosis computed, it is been shown that sea clutter amplitude is not rayleigh distribution ; through the comparison of amplitude histogram and distributed models with the same parameters, it is been shown that hh polarization clutter is lognormal distribution, whereas vv polarization is k - distribution ; at the same time the correlation function and power spectrum density are been analyzed, at last the correlation compound k - distribution stochastic sequences whose covariance matrix is been given are been generated through sirp algorithm

    文中先介紹了海雜波幅度的有關模型，通過對ipix雷達海雜波數據的i 、 q分量的直方圖以及傾斜度和峰度進行了分析和計算，證明了海雜波幅度不服從瑞利分佈;使用幅度直方圖和相同參數下的各種分佈模型進行比較，得出hh極化符合對數正態分佈，而vv極化服從k -分佈的結論;同時對海雜波的相關函數和功率譜進行了分析，最後使用sirp演算法產生了給定協方差矩陣的相關復合k -分佈隨機序列。
  12. In the framework, gats < annex on telecommunication > is the technical annex in the purpose of that basic principles and terms of gats could adapt to the public telecommunications transport networks and service better. the main idea of the annex is that each member shall ensure any service supplier of any other member is accorded access to and use of public telecommunication transport networks and services on reasonable and nondiscriminatory terms and conditions, for the supply of a service included in its schedule ; the < agreement on basci telecommunications services > is the result of specific basic telecommunications services negotiation after the uruguay round, with a central meaning that commits in terms of impersonality and impartiality partly or wholly open the basic telecommunications services market to other member without discrimination

    在這個框架中， gats 《關于電信服務的附件》是為了使gats框架協議的基本原則和規定更好地適用於電信基礎傳輸服務而做出的針對性附加規定，其核心是要求每一成員應保證任何其他成員的任何服務提供者可按照合理和非歧視的條款和條件進入和使用其公共電信傳輸網路和服務，以提供其減讓表中包括的服務； 《基礎電信協議》是在烏拉圭回合后專門進行的基礎電信談判的談判成果，其核心是在客觀、公正的基礎上無差別地向締約方承諾部分或全部開放基礎電信服務市場。
  13. When the covariance matrix formed by securities yields is positive definite, we provide the model with transaction costs, the risk is b index risk, researching the model under short sale and no short sale separately

    在證券收益率之間的協方差陣為正定矩陣時，給出了以值風險為風險指標的含有交易費的證券組合投資模型，並分別在允許賣空和不允許賣空兩種情形下進行了討論。
  14. Then, this paper empirically tested the validation and predictive accuracy of different var risk management model in the domestic financial market. finally, with the analysis of modem financial risk management development trend and the current domestic financial risk management situation, this paper made a prospect for the application of this model in the construction of domestic financial risk management system. through the analysis, the main conclusions are as follows : ( l ) the traditional mean - variance model is the special example of the portfolio selection based on the var risk management model for the case that the returns of the portfolio are assumed to be normally distributed ; compared with the mean - variance model, the var risk management model is more comprehensive and accurate in the measurement of the portfolio risk, so based on the var model, the investors can allocate the asset more effectively. ( 2 ) the var risk management model can provide the timely and comprehensive risk information for the top risk manager, so it is very helpful to the improvement of total risk management efficiency. ( 3 ) based on the var model, the raroc performance valuation approach can reflect the real performance of the portfolio manager and provide the coherent standard for the allocation of risk limitation and the construction of the incentive compatibility constraint mechanism in the financial instiutions

    通過研究分析，本文主要得出如下結論： （ 1 ）傳統的markowitz均值? ?方差模型僅僅是在資產組合收益率正態分佈假設條件下基於var風險管理模型進行資產組合選擇的特例，與均值? ?方差模型中的方差風險度量方法相比， var風險管理模型能夠更全面、更貼切地衡量資產組合的風險，且基於此模型能夠更有效地進行資產配置決策； （ 2 ） var風險管理模型能夠滿足更高層次風險管理者對風險信息的需求，有助於整體風險管理效率的提高； （ 3 ）基於var風險管理模型的raroc績效評價能夠反映資產組合管理人的真實業績，從而為金融機構風險限額的分配和激勵約束機制的制定提供統一的標準； （ 4 ）國內證券市場資產組合收益率服從正態分佈的假設明顯不成立，實證檢驗表明基於資產組合收益率正態分佈假設條件下的方差? ?協方差模型對國內資產組合風險的預測存在較大的偏差，由於文中證明在收益率正態分佈假設條件下基於方差? ?協方差模型進行資產組合選擇的結果等價于markowitz的均值? ?方差模型，因此，均值? ?方差模型對國內資產組合風險的預測同樣會存在著較大的偏差，而半參數var風險管理模型則能夠取得較好的預測衡量效果； （ 5 ） var風險管理模型符合未來金融風險管理的發展趨勢，基於var風險管理模型建立內容提要風險限額內控體系、風險信息披露體系和業績評價體系，並進行金融監管，將有助於國內金融機構內部風險管理方法和外部監管技術跟上國際金融風險管理的發展潮流。
  15. Author ' s contribution to this work can be summarized as : a. provisioning of a comprehensive study on ipv4 / ipv6 and dhcpv4 / dhcpv6 b. derivation of the state transition tables / diagrams and time sequence diagrams for dhcpv6 from informal description in english c. development of an dhcpv6 server and client software package in the linux environment d. presentation of test suite planning work and definition a basic test group based on the remote test method defined by iso 9646, which is in turn used in testing the dhcpv6 software developed by the author. through comparison of the test results from sc - nctkl and a third - party company, the basic conformity between the implementation and relevant standards has been proved to some extent. finally the author gives a brief conclusion about the futher work and the prospect of developing dhcpv6

    作者的獨立的工作包括：較深入地分析了ipv4 ipv6和dhcpv4 dhcpv6的差異；利用工作原理圖、狀態變遷圖表和時序圖，較完整地描述了dhcpv6客戶機服務器的狀態變遷和信息交換過程，對dhcpv6的協議實現提供了有價值的借鑒；在linux環境下實現了dhcpv6定義的服務器和客戶機軟體；研究了有關dhcpv6測試的相關技術，並以remotetest方法為背西南交通大學碩士研究生學位論文第日頁景編寫了測試控制數據，並在在實驗室環境下進行了相關的測試;為了提高測試結果的客觀性，對筆者開發的軟體委託了第三方進行測試，兩個測試結果表明，該軟體基本符合dhcpv6的正tf的相關標準。
  16. An advantage of this method is that it can be applied when the covariance matrix of the invested projects is positive semi - definite

    該方法的優點在於能夠處理各投資項目之間的協方差矩陣為半正定的情形。
  17. One - dimension noise subspace - based method always assumes that only the minimum eigenvalue of the signal covariance matrix is the noise eigenvalue, and the corresponding eigenvector is the true noise vector and constructs the one - dimension noise subspace

    基於一維噪聲子空間方法始終認定只有信號協方差矩陣的最小特徵值才是噪聲特徵值，其對應的特徵向量才是真正的噪聲向量，並構成一維噪聲子空間。
  18. With making a co - integration analysis on the data of time series, we can find that there are a long - term dynamic equilibrium relation and short - term error correction mechanism among economic development, system transforming and transaction cost in 1978 - 2003 in china

    摘要使用協整分析方法對轉型時期中國經驗數據進行定量分析，可以發現， 1978 - 2003年我國的經濟發展、體制轉型與交易費用之間存在長期動態均衡關系和短期誤差修正機制。
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