直接最優化 的英文怎麼說
中文拼音 [zhíjiēzuìyōuhuà]
直接最優化
英文
direct optimization-
Optimized association rules are permitted to contain uninstantiated attributes. the optimization procedure is to determine the instantiations such that some measures of the roles are maximized. this paper tries to maximize interest to find more interesting rules. on the other hand, the approach permits the optimized association rule to contain uninstantiated numeric attributes in both the antecedence and the consequence. a naive algorithm of finding such optimized rules can be got by a straightforward extension of the algorithm for only one numeric attribute. unfortunately, that results in a poor performance. a heuristic algorithm that finds the approximate optimal rules is proposed to improve the performance. the experiments with the synthetic data sets show the advantages of interest over confidence on finding interesting rules with two attributes. the experiments with real data set show the approximate linear scalability and good accuracy of the algorithm
優化關聯規則允許在規則中包含未初始化的屬性.優化過程就是確定對這些屬性進行初始化，使得某些度量最大化.最大化興趣度因子用來發現更加有趣的規則;另一方面，允許優化規則在前提和結果中各包含一個未初始化的數值屬性.對那些處理一個數值屬性的演算法進行直接的擴展，可以得到一個發現這種優化規則的簡單演算法.然而這種方法的性能很差，因此，為了改善性能，提出一種啟發式方法，它發現的是近似最優的規則.在人造數據集上的實驗結果表明，當優化規則包含兩個數值屬性時，優化興趣度因子得到的規則比優化可信度得到的規則更有趣.在真實數據集上的實驗結果表明，該演算法具有近似線性的可擴展性和較好的精度This thesis also first presents the most straightforward and the most effective evaluation indexes on the qualities of crack filling and pothole repair, compares and analyzes the properties, the applicable situations, the strong and the weak points of crack filling materials ( such as hot asphalt cement, emulsified asphalt, modified asphalt, etc. ) and pothole repair materials ( such as hot - mix asphalt mixture and cold - mix asphalt mixture ). on the basis of the permanent demands on repair, this thesis sums up and lists the maintenance steps in crack filling and pothole repair, and advances the procedure designs to be directly adopted by maintenance workers of asphalt roads
首次提出了評定瀝青路面裂縫填封和坑槽修補質量好壞最為直接、有效的評價指標，分別對用作裂縫填封材料的熱瀝青、乳化瀝青和改性瀝青及用作坑槽修補材料的熱拌瀝青混合料和冷拌瀝青混合料的性能、適用場合及優缺點進行了比較分析，並按永久性修補要求，歸納提煉了裂縫填封和坑槽修補的工藝步驟，提出了可供瀝青路面養護人員直接採用的工藝方案。It is very important to estimate the basic parameters in helicopter preliminary design. neural network ( nn ) has the advantages in estimating accuracy and generalization over traditional methods. however, there are some difficulties in using nn, e. g., how to select a proper network structure and the number of hidden layers. in this paper, structure and connection weight of a three - layer nn are optimized by genetic algorithm, and the optimized network is applied to helicopter sizing. the proposed method can not only give an optimal nn structure and connection weight, but also reduce the prediction error and has the capability of self - learning when the latest data are available. furthermore, this method can be easily applied to helicopter design systems
在直升機初步設計階段估算其基本參數是很重要的.神經網路的通用性和精度比傳統的估算方法有更多的優勢，但是在應用神經網路時存在如何選擇合適的網路結構和隱層節點數目等一些困難.應用遺傳演算法優化三層神經網路結構和連接權重，並將優化得到的網路應用於直升機參數選擇中.該方法不但可以給出一個最優的神經網路結構和連接權重，而且降低了估算誤差，具有及時應用最新數據學習的能力.此外，該方法易於在直升機設計系統中得到應用With the development of science and technology, more and more oxide crystals are synthesized by more and more advanced technique, the new oxide crystals are incessantly synthesized and the new characters of oxide crystals are incessantly founded. corundum dopped with impurity not only is cherished because of it ' s beautiful appearance, but also is used in the fields such as electrotechnics, mechanism, laser, the optic apparatus and the underlay of semiconductor. sapphire dopped with ti3 + is the best material of the tunable solid laser. zno crystal is material of the direct gap semiconductor ( the width of forbidden band : 3. 37ev ). the excited emission in zno crystal at room temperature has been found, so the ultraviolet luminescence in zno semiconductor can be acquired at room temperature
含有少量雜質的剛玉晶體（ - al _ 2o _ 3 ）不僅由於其色澤艷麗成為人們珍愛的名貴寶石，而且由於它具有的優異性能，被廣泛應用於電工、機械、激光器，光學器件和半導體襯底材料。鈦藍寶石是目前最優異的固體寬帶調諧激光材料，用於製作飛秒脈沖可調諧激光器。氧化鋅晶體是直接帶隙寬禁帶半導體材料（禁帶寬度3 . 37ev ） ，現已發現具有室溫下受激發射特性，有可能實現室溫下半導體紫外發光。Based on the actual inventory conditions of petroleum enterprises and an analysis of the attitudes of material supply, optimal model of inventory was brought forward to economize capital. in this model, the optimal inventory and purchase are predicated with purchase capability, market price and so on. according to the inventory characteristics in the petroleum area, some inventory control methods were put forward, such as the distributed stocking and wholly limited quantity, purchasing just - in - time, and united stocks management and so forth
作者根據石油企業庫存的實際情況，分析了為生產提供生產物資的特點，建立了一個以節省資金為直接性能指標的庫存優化模型，這個模型能夠根據購買能力、市場價格、資金周轉率等方面的信息預測最佳庫存量和購買量，根據石油行業庫存的特點，提出了分散式庫存整體限量法、即時采購、聯合庫存管理等庫存控制管理方法。Then, the course of the development of register allocation strategy is illuminated in detail and a direct priority - based register allocation approach via the analysis and comparison of many improvements to the graph coloring strategy is proposed, it selects the split live range based on the priorities of the spilled live ranges not the priorities of the total candidate live ranges
然後，詳細闡明了寄存器分配策略的演化歷程，通過分析和比較基於圖著色法的各種改進方案，從實現最優分配的角度，在chow和hennessy的寄存器分配方案的基礎上提出一種基於直接優先級的寄存器分配策略，更直接、更具體地根據溢出活躍范圍段的優先級決定切分。The discuss starts from the " positive externalities " of tech - research and development, pointing out that the products of tech - research and development somewhat has the property of " public good ". without < wp = 8 > government ' s interfere, the intensity of tech - research and development by private section ca n ' t meet the need of " pareto optism " because of the " positive externalities ", as a result, the items of venture capital are insufficient and the development of venture captal will be pull back. rational policies of government expediture can internalize the " positive externalities " - transforming them to more revenue or less cost of the tech - research and development private suppliers. be feared of the high risk at the beginning of venture capital, the private section ca n ' t provide enough capital, the " capital gap " should be fetched up by government with equity capital, creditor ' s right capital, subcidy, at the same time, some other means, such as government purchase, credit guarantee, capital insurance, tax expenditure can promte private capital, is also important. in this part, the function of the above means, the establishment and enforcment of them are breafly discussed. because tax policies play a critical role in fiscal policy, r - y chart is used to analyse the relation between tax and venture capital, at last, a conclution is drawn : tax expenditure can promote venture capital
這部分論述從科技研發成果的「外溢性」入手，指出科技研發成果在不同程度上具有「公共品」性質，這種外溢性使得在純市場條件下，私人部門研發活動強度達不到社會資源配置最優的要求，也使風險投資項目來源不足， < wp = 6 >阻礙風險投資的發展。合理的政府財政支出政策可以使「外溢性」內部化。之後，論述了風險投資資本來源與政府財政支出政策的關系，由於風險投資尤其是其初期的高風險性，民間風險資本不足，應由政府以股權及債權投資、補助等財政直接支出方式彌補資本缺口，運用政府采購、財政擔保、保險、貼息、稅收優惠等間接支出方式，鼓勵民間資本進入風險投資領域也同樣重要。In the paper, a speed estimator based on artificial neural network is designed according to the principle of direct torque control, the speed estimator is optimized by genetic algorithm, and the parameters of pid speed adjuster is also optimized by genetic algorithm. a stator linkage and torque observer based on stator resistance estimator using fuzzy neural network is also designed. eventually, the intelligent control of direct torque control system is implemented
本文根據異步電動機直接轉矩控制原理，在應用人工神經網路進行速度辨識的基礎上，利用遺傳演算法對神經網路速度辨識器進行了優化設計；運用遺傳演算法對pid速度調節器的結構和參數進行了整合；在採用模糊神經網路對電機定子電阻辨識的基礎上，進行了定子磁鏈及轉矩的觀測，為最終實現無速度傳感器直接轉矩控制系統的智能控制創造了條件。At first, this thesis analyzed some essential elements about the system of personal houe loan and make the compare to chinese and foreign system, and established the system of personal credit evaluate ; the second, the thesis discusses the investment technique and strategy of national debt in the provident fund, and established the model about how to invest the national debt ; the third, the thesis build the forecast model about fund collecting and drawing, and make use of the combination invest theories to build model of individual loan and national debt ; at last, the thesis analyses the risk ' s inside reason of house funds with the risk type, and to give out the related suggestion to funds risk. mechanism. the thesis research show me how to make use of that some models and methods in the process of haf management and make me deeply understand the house funds
本文首先分析了個人住房貸款制度基本要素，即貸款期限、貸款利率與抵押物價值的比例、政府在個人住房貸款市場中的作用、貸款違約情況下的處置措施、個人住房貸款的流動性問題，並對中外製度作了比較，建立了個人信用評分評級體系和信用評估模型，並以重慶市住房公積金為研究對象做出了住房資金個貸風險評估的實證研究；其次，分析了影響國債價格走勢的因素，討論了公積金國債的投資技巧和策略，並建立了基於理論的國債投資組合模型；接下來，根據資產負債管理理論中的資金總庫法和資金分配法分析了公積金總體資金項目的來源和運用，並就此作了總量平衡模型，對住房公積金季度累計歸集金額作了直線回歸和季節趨勢比率預測，運用投資組合理論建立了公積金個人貸款和國債投資組合的最優化模型；最後，探析了住房資金風險的內在原因和風險類型，從資金籌集風險、信貸回歸風險、保險機制、法律風險和政策風險五個方面為住房資金風險防範機制建設提出了相關建議。Finally, we convert this optimal problem to a nonlinear parameter optimization problem by collocation method. these studies examine the collocation method in case of equally or non - equally spaced division points, and in case of different numbers of nodes
本文採用直接搜索法和節點配置，將連續動態最優控制問題轉換為靜態離散的數值優化問題，並對狀態和控制變量的約束進行轉化。The program of data processing in determination of percent released of pharmaceutical preparation was developed ; two modules included in this program are connected but independence each other, one module calculate percent released, one module regress equation ; determination of percent released of pharmaceutical preparation, comparison of released curve in one reference frame and modeling mathematics model were realized by running this program. the program of formulation optimization based on artificial neural network was compiled to solve the nonlinear problem in formulation optimization. provided parameters were used to predict the released amount of a set of formulations
簡便，其計算結果與現有其他程序計算結果基本一致：開發固體制劑體外溶出試驗數據處理程序，程序運行時分為計算累積釋放百分率和優選最佳數學模型兩個相互連接又各自獨立的環節，實現了累積釋放百分率的自動計算，同一坐標系下釋放曲線的直觀比較，常用數學模型的擬合；開發基於人工神經網路的處方優化系統，解訣處方優化這一多目標、非線性優化問題，利用符合擬合精度的訓練結果預測給定處方的釋放度，預測結果與實驗結果基本相近。In theoretical analysis, finite element method is firstly used to solve the mechanical - electric coupling problems in a flexible plate with piezoelectric elements and to obtain structural vibration modal shapes. focusing on collocated type of piezoelectric sensors / actuators, the maximum determinant of fisher information matrix criteria is chosen as the optimization function and then simplified to determine an optimal principle for the best location of piezoelectric elements
本文研究柔性板振動控制中壓電元件的位置優化設計問題，針對壓電傳感器和驅動器的同位布置結構型式，將壓電元件的有限元分析方法與d優化設計準則相結合，直接利用結構的模態振型確定壓電元件在柔性板上的最優位置。Concerned the discrete area of the steel shape, a method is presented : searching the best solution of continual variable first by criteria, and next searching optimal solution by the direct - searching method of mixed variable on the original point of the continual result
慮到型鋼截面的離散化，本文對多層輕鋼框架結構優化提出一種近似的處理方法，即先用準則法求得連續變量最優點，然後將其結果作為混合變量直接搜索法的初始點進行第二步優化。The performance of the system designed will directly affect the overloading that an aircraft can bear, the safe overrunning length of runway as well as the changes of tensile force of belt and braking pressure of oil, and ultimately has influence on the arresting effects. so in the process of developing a system, we should study the system in order to define the optimal configuration parameters or more effective control methods
攔阻系統設計的優劣會直接影響到飛機承受的過載、安全攔停距離及帶拉力、剎車壓力的變化狀況，最終影響攔阻效果，因此在研製系統過程中，要對系統進行分析研究，以確定最佳的結構參數和更有效的控制方法。In the course of modeling, we present multi - step generalized gradient method and multi - stage curve fitting technique, prove convergence of multi - step generalized gradient method by using differential equation stable theory, analyze the error of multi - stage curve fitting technique by using inner space, creat knowledge base of water network system by using the maximum subordinate principle of and near - select principle of pattern recognition. at last we make the optimal running scheme of water network system based on heuristic search technique of artificial intelligence and global feedback immediate coordination method of large scale system theory
在建立系統模型的過程中，提出了多步廣義梯度法和多層曲線擬合的建模方法，並用微分方程穩定性理論證明了多步廣度梯度法收斂性，用內積空間的有關知識對多層曲線擬合進行誤差分析;應用模糊數學中的最大隸屬度原則和模糊識別中的擇近原則和人工智慧中狀態空間表示法建立注水系統的知識庫;用人工智慧中的啟發式搜索技術和大系統理論中的具有全局反饋的直接協調法制定注水系統的優化運行方案。In this paper, single fiber composite fragment ( sfc ) method, which is one of the most widespread and effective experimental methods for determining the mechanical properties of interface, was adopted to study the load transfer mechanism and to evaluate the adhesion performance of composite with surface - treated fibers. this is helpful for optimization design of interface
本文採用了目前最為流行、最為有效的直接測定界面力學性能的實驗方法之一? ?單纖維復合材料斷裂實驗研究了纖維樹脂界面載荷傳遞機理，分析了幾種纖維表面處理復合材料界面的粘結情況，對界面的優化設計具有一定的指導作用。Firstly this paper summarized relational literatures on the way of basic theory, study method and conception ; secondly this paper analysed the actuality of allocation for higher schools " s s & t resource according to year 1995 - 2000 < usts > and < ' 00 national r & d resource check data >. then this paper evaluated the allocation actuality by the method of ahp and dea on the directly in - output efficiency and relatively efficiency according t o above analysing. finally this paper optimized the allocation structure by the method of sd. and brought forward the standard of optimizing allocation according to the speciality of s & t resource, and that this paper relevant countermeasures, and offered the decision - making gist for government department
本論文首先對相關文獻從基礎理論、研究方法和概念方面進行了綜述；其次依據1995 - 2000年教育部每年的《高等學校科技統計資料匯編》 ，以及《 2000年全國r & d清查數據》 ，對河北省高校科技資源配置的現狀，從規模、結構方面，重點對人力資源、財力資源，分別運用層次分析、 dea等方法，從直接投入產出效率和相對效率角度，對配置現狀進行了分析評價；最後根據科技資源配置的特點和基礎理論提出了優化配置的標準，同時運用系統動力學方法對配置結構進行了優化，而且提出了相應的對策，為決策部門提供了可以參考的決策依據。Firstly, a new joint filterbank precoders and decision feedback equalizers structure is proposed, and the corresponding optimization result based on the maximal mutual information criterion is derived. secondly, the concept of dt canonical model is proposed, which is very suitable for the task of blind signal processing based on the second - order statistical of the observations. thirdly, the methods of blind equalization and identification of the tv dispersive channels are researched systematically based on the proposed dt canonical model, and a subspace blind identification algorithm of the time - invariant channel matrix is developed
本文創新性的成果在於：提出了預編碼-判決反饋聯合均衡系統結構，並從理論推導得出了對應的最大互信息量最優化設計結果；首次提出了時變色散通道的離散正則模型概念，該模型適宜於利用觀察數據的二階統計量進行盲信號處理；基於離散正則模型對時變色散通道進行了系統的盲均衡和盲辨識方法研究，提出了對時不變通道矩陣的子空間盲辨識演算法；針對誤差傳播效應問題，提出了可以消除誤差傳播效應的兩級盲辨識演算法；提出了基於離散正則模型的直接盲均衡演算法；提出了基於特徵恢復思想的神經網路直接自適應盲均衡演算法。In this arithmetic, the objective function is modified gradually by distinguishing the rigid zone and plastic zone before carry through more calculation, in order to obtain the optimal solution of the programs. the convergence of the algorithm is also shown in this paper
基於最優化理論及其求解方法，提出了一種求解塑性極限載荷的直接迭代演算法，通過逐步識別剛性區和塑性區，不斷修正目標函數，以逐步求得問題的最優解，論文證明了該優化演算法的收斂性。As a project financed by yunfeng and ming tomb hydroelectric power station, the study on " mathematical model for dam safety monitoring and dynamic inverse model for underground power house " was conducted. according to the data observed in - situ, the under - fitting problems in regression models for dam safety monitoring were discussed, and the computational parameters and boundary conditions of underground structures were determined on the base of dynamic inverse mathematical model
本文利用大壩運行監測資料和水電站廠房結構的振動測試數據，對水工建築物的正反分析模型中的相關問題進行了探討，分析了大壩安全監測回歸模型存在的欠擬合現象，建立了通用的結構動力最優化反分析模型，實現用戶優化演算法對復雜結構的直接調用和優化計算，在計算模型方法的基礎上對雲峰寬縫重力壩的安全狀況和十三陵抽水蓄能電站的動力反演問題進行實例分析。分享友人