劣函數 的英文怎麼說
中文拼音 [lièhánshǔ]
劣函數
英文
minorante-
2. find out benefic and inferior resources of enterprise by using extension set theory to build up the association function, and build up the extension model of resources contradiction by contrasting the inferior resources to the needed resources. 3
應用可拓集合理論，建立關聯函數，確定重組企業的優勢資源和劣勢資源，再根據對劣勢資源與企業日標所需資源比較，建立重組中資源矛盾的可拓模型。Three operators ( crossover, replication, mutation ) are used in two - dimensional packing. many parent generations make many filial generations, and then the individual will be abandoned according to the value of the objective function
文中把生物學中的遺傳、變異、交叉用於二維布局中，從多個父代個體中生成多個子代個體，根據目標函數值的優劣進行淘汰。In the fourth chapter, several methods for handling constrains by genetic algorithms for nonlinear programming problems are introduced. these methods were grouped into four categories : methods based on preserving feasibility of solutions, methods based on penalty functions, methods which make a clear distinction between feasible and infeasible solutions and other hybrid methods
在第四章中介紹了處理約束的四類方法：運算元修正法，罰函數法，可行域搜索法，以及混合遺傳演算法，並對這些方法做了詳細的分析，指出了他們優劣之處。The main contributions of this dissertation are listed as the followings : l ) deducing and proving the " three in one " theory of natural monopoly, that is, from the angles of economies of scale, economies of scope and economies of network, giving an explanation of natural monopoly ; 2 ) putting forward the concept of " strict superadditivity " and proving that total value function and total revenue function of network economy have strict superadditivity ; 3 ) summarizing the emerging characteristics in the market definition of natural monopoly, that is, in the monopoly industry, " market " tends to be more and more smaller than " industry " ; 4 ) expounding that the objective patterns of regulatory reforms of the railway industry in china are explicit regulation with partly characteristics of implicit regulation ; 5 ) proving the idea that the structural reforms of the railway industry in china should be hierarchical ; 6 ) demonstrating the theoretical bases for whether infrastructure management should be separated from transpo rt operation ; 7 ) expounding and proving that the interior of the railway industry in china should implement the differential property rights reform pattern
本文的研究特點在於： （ 1 ）在規模經濟、范圍經濟的基礎上進一步推導並證明了網路經濟與自然壟斷的關系，即自然壟斷可以從規模經濟、范圍經濟、網路經濟三個角度來解釋論述； （ 2 ）明確提出了一個與鮑莫爾、潘澤與威利格等人提出的「成本劣加性」相類似的概念? ?價值優加性，並證明了網路經濟的總價值函數和總收益函數具有嚴格優加性； （ 3 ）概括了自然壟斷市場界定中所出現的新特徵，即在壟斷產業中， 「市場」正越來越小於「產業」 ； （ 4 ）進一步論證了中國鐵路產業規制創新的目標模式是兼有部分內生規制特點的外生規制； （ 5 ）在中國鐵路產業的結構改革中應體現分層次的思想； （ 6 ）明確論述了內容提要鐵路路網公司等自然壟斷環節是否分割的理論基礎; （ 7 ）提出並進一步證明了中國鐵路產業內部應實行差異化的產權改革模式。In these methods, relativity degree solution is the method in which an ideal solution is established, the relativity degrees of evaluated solutions and the ideal solution are compared and orders are marshaled at last. affiliation degree solution is the solution in which ideal solution and ill - ideal solution are established, affiliate degrees between evaluated solutions and ideal solution are resolved by establishing a goal function and then orders of all solutions are marshaled according to measurements of affiliation degrees. gross profit solution is the solution in which both ideal solution and ill - ideal solution are considered, the differences between evaluated solutions and them a re measured according to n - dimension euclidean distance, and then gross profits are calculated
其中關聯度法是首先確立一個理想方案，然後比較待評估方案與理想方案的關聯度，最後根據其大小對各待評估方案進行排序；優屬度法是首先確立理想方案和負理想方案，然後把各待評方案與理想方案和負理想方案的優屬度為權建立一個目標函數，進而求出各待評方案與理想方案的優屬度，最後根據優屬度的大小對各方案進行排序；總效用法的思想是同武漢理工大學碩士學位論文時考慮理想解與負理想解二者作為參照基準，並採用n維歐幾里德距離來度量任意可行解（被評估方案）與理想方案及負理想方案之間的差異，然後指導兩個差異結合在一起計算被評估方案的總效用，評估的原則是總效用越大越好;嫡本是物理學中的概念，在信息理論中被借用來作為度量權重的一種方法，但也可用來評估各方案的優劣，其評估原則是嫡值越大越好。By the coding, all first - order rules needed to explore are mapped into the points in genetic space ; ( 2 ) the fitness function, which evaluates the quality of first - order rule. the variation of fir
（ 2 ）評判一階規則優劣的適應度函數，一階規則適應度的相應變化形成了遺傳空間高低起伏的地貌特徵； （ 3 ）由交叉和變異運算元決定的規則間的鄰接關系，描述了遺傳空間地貌的溝壑或橋梁。Approach of setting up equipment test quality control system
用模糊隸屬函數替代傳統優劣指數評價法The evaluation has been made for normally used four envelope functions of earthquake ground motion. being as evaluation standard of the envelope function this paper pointed out that the controlling capability of the parameters involved in functions of the peak position of the envelope with single peak and the shape of the envelope are essential besides simplicity of the formula of envelope function
本文對已經提出的四種經常使用的包線函數模型進行了評價，認為對于評價單峰點包線函數，除了要求形式簡單以外，其優劣可以用函數對峰點位置和高峰隆起程度的控制能力作為標準。In the light of the fuzzy property of influence factors of air resistance in roadway ventilation, this paper establishes five standard patterns based on analyzing the influence factors, uses fuzzy recognition method to determine the membership function of the influence factors, then rationally evaluates the value of roadway ' s air resistance and whether the roadway ' s ventilation effect is good or not
摘要針對巷道中通風阻力影響的模糊性，在分析其影響因素的基礎上，建立了5個標準模式，運用模糊識別的方法確定各因素的隸屬函數，從而合理評判巷道中通風阻力大小與巷道通風效果的優劣。This thesis suggests a process considered minimizes the population size as similar individuals occur in the fitter members of the population, which helps reduce the execution times for ga by removing the redundancy associated with the saturation effect found in the later generation. this thesis uses a method that adds dynamic penalty terms to the fitness function according to the optimal degree of solutions, so as to create a gradient toward a feasible suboptimal or even optimal solutions. on the basis of the difference of the biggest and the smallest of fitness of individual, modifying the fitness function in order to convergence is a satisfaction
動態調節種群大小，去掉遺傳演算法在迭代後期搜索產生的過多相似個體，達到減少計算時間的目的；按照解的優劣程度給適應度函數增加一個在ga搜索過程中動態改變的可變罰函數，給搜索最優解創造一個梯度，使遺傳演算法收斂到可行的較優解或最優解；根據適應度值最大和最小個體的差修正適應度函數，使適應度函數值適中不容易造成收斂太快、局部收斂或根本不收斂而變成隨機搜索；為了避免「近親繁殖」採用競爭擇優的交叉操作；利用并行遺傳演算法的思想，提出一種自適應多子種群進化策略；提出人口汰新政策來解決類似甚至相同的個體的情況發生。Such methods are generally decreasing method, such as, feasible direction methods, constrained variable metric methods, etc. another class is sub - problems method, which approximates the optimal solution by solving a series of simple sub - problems, such as penalty function methods, trust region methods, and successive quadratic programming sub - problems, etc. the same property of two classes of methods is that they determine whether the next iterative point is " good " or " bad " by comparing the objective function value or merit function value at the current point and next iterative point
另一類叫做子問題演算法，這種演算法是通過一系列簡單子問題的解來逼近原問題的最優解，如罰函數法、信賴域演算法、逐步二次規劃演算法等。這兩類演算法的一個共同特點是，通過比較當前點和下一個迭代點的目標函數值或評價函數值來確定迭代點的「優」或「劣」 ，若迭代點比當前點「優」則該迭代點可以被接受，否則須繼續搜索或調整子問題。In the same time we also use it to test the power of dc crossover. in this algorithm every element in the population a domination count is defined together with a neighborhood density measure based on a sharing function. those two parameters are then non - linear combined in order to define the individual ' s fitness
演算法通過計算種群中pareto優于某個個體的個體數目以及個體所在位置的密集度來定義適應度函數，多個算例的測試結果表明該演算法結合錯位交叉運算元具有較好的性能，能夠使演算法收斂到pareto概念下的比較均勻的一組非劣最優解。This thesis contrasts and analyses the different calculation - method, and improves the genetic algorithm in the parameter inversion of the rock and soil engineering. the strategies are mainly in the following three aspects : 1, new searching way is compositely searching genetic algorithm which is made up of the acceleration method and genetic algorithm when it partially calculates in the later time ; 2, index function is inducted in gengetic operators, at the same time repeated select and double exchange pool are used ; 3, splicing crossover, which reserves some new evolution factions, improves authority function accaunting the capabilities and kinds
本文對優化演算法中不同求解方法進行對比分析，針對遺傳演算法在巖土工程參數反演運算中進行了改進，改進的策略主要集中於三個方面： 1 、提出了在遺傳演算法中融入形加速法的改進方法? ?復合遺傳搜索法； 2 、針對遺傳運算元的選擇策略，引入指數適值方法，設置雙交換池，提出了重復篩選法； 3 、加強對劣勢種群的內部優良信息的遺傳功能的改進，引入權函數，擴大可交叉運算元的種類，保留各運算元的進化功能，提出了融合交叉運演算法。Four families of mother wavelets, four threshold selection rules and three threshold rescaling methods are tested in a series of experiments to estimate the functioning of those wavelets and thresholding parameters
然後對實驗數據進行了去噪處理實驗。以評價各種小波函數和閾值選取方法的優劣。The writer analyzed mallat three criteria and introduced the optimized function based on these three criteria, at last found optimized mother wavelet for edge detection. at the end of this chapter single edge searching method based on local maximum is introduced and gained ideal edge image
分析mallat提出的評價邊緣檢測函數優劣的三個判別函數，利用這三個判別函數列出最優化方程，推導出邊緣檢測最優小波，最後創造性提出局部最大值單像素邊緣搜索法，提取出單像素寬度邊緣圖像，圖像效果達到了滿意的效果。For water resources optimization distribution, firstly, this paper introduced its meaning, significance and principle, raised integral planning idea, and optimization model is given with multi - objection optimization planning method. finally, the model is computed with fgoalattain function in matlab optimization toolbox. a series of planning scenarios are put forward
對水資源優化配置進行了研究，在介紹水資源優化配置的涵義、意義、原則的基礎上，採用多目標規劃優化方法建立優化配置模型，通過調用matlab優化工具箱中的fgoalattain函數對模型進行求解，給出不同的優化配置方案，組成一系列非劣解，以供決策者選擇。This paper looks soil as homogeneous stationary random fields, expatiates the application of the random process in the geotechnical engineering and establishes the basic concept, its assortment and digital feature of random process and random fields, tests whether this random fields is a stationary process and whether it is ergodic, applies correlation function theory and variable function theory in the study of the random fields of soil parameter, acquires the relation of the two theories and draws the conclusion that they are equal essentially, fits the measured curve by using the correlation function method, variable function method and other methods, and acquires the value of correlation distance, applies the random fields theory of soil parameter in actual engineering, estimates the value of elevation and other soil parameters of 92 holes in baoding city and the results are satisfying
將相關函數理論和變異函數理論分別應用於巖土參數隨機場的研究中，通過運用這兩種理論對巖土參數特性的描述，得出這兩種理論的內在聯系及其本質一致性的結論。分別運用相關函數法、變異函數法及其它求解相關距離的方法對實測函數曲線的擬合，得出描述空間相關程度的度量? ?相關距離（或變程） ，對用這幾種不同方法得出的相關距離（或變程）值進行了比較，並對這幾種方法的優劣和實用性做了評比。將巖土參數隨機場理論運用於工程實際，對保定市區某場地的92個鉆孔的各層位的層底標高及其它幾種常見的巖土參數做出了估計，預測結果比較令人滿意。Numerical experiments with four test functions are performed, and some valuable conclusions are reached. first, the efficacy of full dominance - recessive diploid genetic algorithm outperforms the standard genetic algorithm ( sga ) in high - dimensional functions. the time complexity of the proposed ga approximates a polynomial multiple of that of sga
通過對四個常用測試函數用完全顯隱性二倍體遺傳演算法和標準遺傳演算法進行初始解相同的對比試驗，表明完全顯隱性二倍體遺傳演算法在十維以上的高維函數優化問題中解的效果明顯優于標準遺傳演算法，對低維函數優化問題也不劣於標準遺傳演算法。Conclusions gained are as follows : 1. advantages and disadvantages of non - valve pneumatic rock driller can be judged through the chief aim function put forward in my design
得到如下結論： 1 、用設計中提出的總目標函數，可評價氣動鑿巖機性能的優劣。In the light of the conception of non - inferior result, optimum algorithm utilizes enumeration method and direct method, according to important and variable degrees of various objective function, the principle of selecting the optimum result is put forward
尋優演算法運用直接求非劣解的概念，借用枚舉和直接方法進行尋優，提出了根據各目標函數的重要程度及變化程度選擇最優解的原則。分享友人