convergence test 中文意思是什麼

convergence test 解釋
輻向試驗
  • convergence : n. 1. 聚合，會聚，輻輳，匯合。2. 集合點；【數、物】收斂；【生物學】趨同（現象）。
  • test : n 1 檢驗，檢查；考查；測驗；考試；考驗。2 檢驗用品；試金石；【化學】試藥；（判斷的）標準。3 【化...
  1. Compared with straight ray tracing, inversion of bending ray tracing is better when data of test are accurate. on the other hand, natural weight is introduced and numerical simulations and experiments of wlm on inversion of velocity and attenuation are also made, which show that wlm, with resistance of noises and convergence of iteration, may get good re - construction images

    本文引入了物理意義明確的自然權，對基於自然權的加權阻尼最小二乘反演演算法（ wlm ）在速度反演、衰減反演中進行了數值模擬和試驗研究，結果表明wlm均能獲得良好的重建圖像，迭代收斂，抗噪能力強。
  2. Convergence test pattern

    電視會聚測試圖
  3. By analyzing the characteristic of the flow field in overloading srm and comparing several existing experiment techniques, a convergence - fold tube facility was developed. the flow field in chamber of srm with high acceleration was simulated. some inhibitor ablation experiments were carried out in this test facility

    通過分析過載條件下流場的特點，提出並比較了現有過載地面模擬試驗技術的優缺點，最終確定了收斂?折管的模擬試驗方法，模擬了高過載條件下發動機燃燒室內的高濃度粒子流，利用該方法開展了高過載模擬沖刷條件下的絕熱層燒蝕特性研究及絕熱層抗沖刷能力的篩選試驗。
  4. 423 persons answered the questionnaires and 139 out of them were identified as ecotourists. the result of classification is proved to be effective by prediction validity test, content validity test, theory validity test and convergence validity test. in addition, the ecotourists were classified as hard ecotourists, frequent ecotourists and occasional ecotourists farther according to the times they traveled to nature - based destinations every year and their new ecological paradigm grade which is used to evaluate the visitors attitude to environment. frequent ecotourists and occasional ecotourists both fall category of soft ecotourists, so the " hard - soft " classification system is founded, which will help propel ecotourist studies in china to develop towards the current international mainstream of the field

    以北京市百花山自然保護區為例，在總結國外相關研究經驗的基礎上，採用k階最近鄰knn和反向傳播bp前饋型多層神經網路所構成的綜合分類器對百花山遊客中的生態旅遊者進行識別，又根據「每年去相對原始的自然區域的旅遊次數」和環境態度尺度nep得分兩項指標將生態旅遊者進一步細分為嚴格的生態旅遊者經常的生態旅遊者和偶爾的生態旅遊者，其中經常的生態旅遊者和偶爾的生態旅遊者歸為一般的生態旅遊者，從而構建起嚴格的一般的生態旅遊者分類體系。
  5. Under appropriate conditions, we obtain the global and superlinear / qudratic convergence of the method. the reported numerical results show that the proposed method performs well for the test problems

    數值計算結果表明，我們的演算法對普通非線性方程組有良好效果，但優勢在求解病態方程組時表現得更為明顯，是解非線性方程組一種行之有效的方法。
  6. This paper summarized a system feature set for transient stability classification, several methods for analyzing the separability of input space of transient stability classification are discussed, tabu search - ing technique is employed to select an effective set of features from a large initial features set. the classification test shows that the presented method works very well for feature selection. fisher linear recognition is employed to cut down the training sample set, the computation burden of the ann training is alleviated very much, so the convergence performance is improved

    本文總結提出了一組用於穩定分類的系統特徵，研究了幾種暫態穩定分類輸入空間可分性分析的方法，並利用tabu搜索技術從一個維數較大的特徵集中選擇出一組有效特徵，取得了良好的效果；研究提出了利用fisher線性識別技術壓縮訓練樣本集的方法，大大減輕了ann的訓練負擔，提高了ann收斂的性能。
  7. We test the convergence with unit root test of panel data to examine the trend of china rural development regional disparity

    為了考察中國農村發展地區差距的變化趨勢，我們採用面板數據單位根檢驗的不同方法對其收斂性進行了嚴格的計量檢驗。
  8. Based on the papers [ 10 ] and [ 19 ], we propose a new nonmonotone conjugate gradient algorithm, prove its convergence and test the new nonmonotone algorihm

    基於文獻[ 10 ]和[ 19 ] ，我們提出了一種新的非單調共軛梯度演算法，證明了新演算法的收斂性，並對它進行了測試。
  9. The main conclusions are as follows : through the different structure and algorithm application of bp model in the predication of regional groundwater hydrology, the hidden layers number, learning rates, neuron number of hidden layer and training errors of bp model and accelerated bp algorithm which influence the convergence effects and test results of model are compared each other. some application technology related parameters of bp structure design are put forward

    論文取得了以下主要成果：通過不同bp網路結構和演算法在區域地下水文預測中的實例研究，重點比較了不同層次結構、隱層單元數、學習速率、訓練收斂誤差等4個基本要素及不同演算法、不同樣本容量等對模型收斂效果、模擬、檢驗與預報結果的具體影響。
  10. We use for reference the model of industrial organization economics to test the convergence degree of the regional loan allocation of china ' s state - owned commercial banks, and find it highly convergent. deriving from a model of bank profit maximization, we then exploit regional financial and economic data to test the reasons for the convergence of the regional loan allocation of state - owned banks

    本文借鑒產業組織經濟學判斷產業結構地區趨同程度大小的模型對我國國有商業銀行信貸資金地區配置的狀況進行實證，發現在地區經濟差異不斷擴大的情況下，國有商業銀行信貸資金配置具有高度的地區趨同性，推測這種現象是由於非經濟因素所造成。
  11. Studies on some distribution test systems show the power flow analysis of distribution systems to have the superior performance in terms of solution time and convergence characteristics. the thesis proposes two algorithms for real - time switching control scheme of shunt capacitors

    在配電網中布置有許多並聯補償電容器組，它們在網路經濟運行中所起的作用不同和運行現場的技術條件不同，它們的實時運行控制採用不同的控制方式和控制演算法。
  12. The major tasks include : ( 1 ) expand the schema theorem for ga. the schema theorem with binary coding advanced by professor holland is expanded to limited integer, letter, floating point numbers the number of which value is limited, and their hybrid coding. ( 2 ) put forward replacing by the excellent chromosome ga ( recga ), superiority colony first ga ( scfga ) and improve the ga ; ( 3 ) make probability convergence analysis of recga using the theory of markov chain, random process ; ( 4 ) make convergence analysis of scfga using the principle of contractive mapping in functional analysis theory ; ( 5 ) design the test programs ( cap ) to resolve np problems ( course arrangement ) with gas ; based on recga, modify the arithmetic and then conduct tests

    主要有以下幾方面工作： （ 1 ）將二進制編碼遺傳演算法的模式定理擴展到由有限整數、字母或取值個數有限的浮點數編碼，或它們混合編碼的遺傳演算法范圍； （ 2 ）提出最佳個體替換策略遺傳演算法（ recga ） 、優勢群體優先策略遺傳演算法（ scfga ） ，對遺傳演算法進行改進； （ 3 ）使用隨機過程理論markov鏈對recga進行了收斂性分析； （ 4 ）使用泛函分析理論壓縮映射原理對scfga進行了收斂性分析； （ 5 ）使用遺傳演算法設計了解決np類問題（排課問題）的測試程序（ cap ） ，並根據recga對演算法進行改進並進行測試。
  13. This algorithm improves confidence in se by estimating parameters and states at the same time. simulation results on test power systems which range in size from 4 to 118 buses, have shown the virtues as follows : getting unbiased estimation without detecting and identifying bad data in measurements ; solving state and parameter estimation for power system with good convergence and excellent robust property ; increasing the numbers of iterations a little bit with the test systems expanded ; estimating many transformer taps simultaneously and remaining the main state estimation ; keeping the estimated relative error within + 0. 1 % and processing efficiently equality constraints and ill condition with polynomial complexity

    對ieee ? 4 118節點系統和廣西主網進行的模擬結果表明： l1范數估計具有不良數據拒絕特性，當量測量中存在不良數據時，該演算法在不經檢測和辨識不良數據情況下仍是無偏估計，具有良好收斂性，所需迭代次數隨著問題規模擴大而增長極小；能夠同時估計多個變壓器抽頭，並保持狀態估計主體；在滿足可觀測性條件下，估計的相對誤差保證在0 . 1以內；能夠有效處理等式約束和病態條件，並具有多項式時間性。
  14. The effect of reference signal power and convergence coefficient to the system is studied by simulation and test

    通過模擬和實驗研究得出了參考信號能量及收斂系數對系統的影響。
  15. The theoretical analysis and test result show that the proper preprocessing an appropriate preprocessing of the optimization mathematical model can simplify the optimal design process, accelerate the algorithm convergence speed, and at the same time, improve the best solution quality

    理論分析和測試數據表明：對優化數學模型採用適當的預處理，簡化了優化設計過程，加速了演算法的收斂速度，同時提高了最優解的質量。
  16. Theorem 8 ( absolute convergence test ) if the series converges absolutely, the series must be convergent

    定理8 （絕對收斂判別法）如果級數絕對收斂，則級數必定收斂。
  17. In this part, a series of functions are built to test several different algorithms. also, the computing cost and the search efficiency are defined. then two measurements - search efficiency and convergence rate, are given to compare searching performance of algorithms

    構造了系列的測試函數對不同的演算法進行系統的測試，定義了演算法的搜索計算量和搜索效率，通過搜索效率和收斂率兩種方法，比較並討論了mec和幾種遺傳演算法的性能。
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