演算法與復雜性 的英文怎麼說

中文拼音 [yǎnsuànfǎyǔfùzáxìng]
演算法與復雜性 英文
cs algorithms and complexity
  • 演 : 動詞1 （演變; 演化） develop; evolve 2 （發揮） deduce; elaborate 3 （依照程式練習或計算） drill;...
  • 算 : Ⅰ動詞1 （計算數目） calculate; reckon; compute; figure 2 （計算進去） include; count 3 （謀劃;計...
  • 法 : Ⅰ名詞1 （由國家制定或認可的行為規則的總稱） law 2 （方法; 方式） way; method; mode; means 3 （標...
  • 復 : Ⅰ形容詞1 （重復） repeated; double; duplicate 2 （繁復） complex; compound Ⅱ動詞1 （轉過去或轉過...
  • 雜 : Ⅰ形容詞（多種多樣的; 混雜的） miscellaneous; varied; sundry; mixed Ⅱ動詞（混合在一起; 攙雜） mix; blend; mingle
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  1. First this paper describes the composing and technics of drillers ; then the composing of control system based on s7 - 300plc is described ; then thinking of such characteristics of oil driller as complexity and long delay, this paper brings forward the control strategy of combining the fuzzy control with smith estimate control algorithm, and sets down the way of auto - driller based on discal hydraulic pressure brake. at last the experiment based on matlab by computer shows that the effect of this control mode is very good and all performance are famous

    首先本文闡述了鉆機的組成與工藝特點，然後描述了基於西門子s7 - 300plc的控制系統組成，然後針對傳統鉆機自動送鉆控制策略落後的缺陷，同時考慮到鉆機的復雜性、大滯后等特點，提出了模糊控制演算法與施密斯（ smith ）預估控制演算法相結合的控制策略，給出了基於液壓盤式剎車的自動送鉆智能控制策略， matlab的模擬實驗證明該控制方式控制效果良好，各方面性能指標都達到理想要求。
  2. Abstract : based on the iterative bit - filling procedure, a computationally efficient bit and power allocation algorithm is presented. the algorithm improves the conventional bit - filling algorithms by maintaining only a subset of subcarriers for computation in each iteration, which reduces the complexity without any performance degradation. moreover, a modified algorithm with even lower complexity is developed, and equal power allocation is introduced as an initial allocation to accelerate its convergence. simulation results show that the modified algorithm achieves a considerable complexity reduction while causing only a minor drop in performance

    文摘:基於迭代的比特和功率分配機制，提出了一種低復雜度的比特和功率分配演算法.與傳統的迭代分配演算法不同，該演算法在每次迭代中只需要比較幾個特定的子載波.該方法在保持傳統迭代演算法性能的前提下極大地減小了迭代分配演算法的復雜度.此外，通過選擇等功率分配方案作為初始方案加快了演算法的收斂速度，進一步降低了演算法復雜度.模擬結果表明，提出的改進演算法在基本不犧牲系統性能的前提下有效地降低了演算法復雜度
  3. To overcome the shortcomings of the traditional fuzzy algorithm, including complex management of diagnosis system, high difficulty in improvement and being unfavorable to accumulate experiences, the improved fuzzy algorithm is introduced to the state diagnosis for complex system, the model of state diagnosis for complex system based on the improved fuzzy algorithm is established, and a sample case is adopted to contrast and verify the state diagnosis model based on the traditional fuzzy algorithm and the state diagnosis model for complex system based on the improved fuzzy algorithm respectively, which indicates that although the latter is inferior in the speed of diagnosis, it has the significant advantages in simple management, easiness in improvement, accurate diagnosis, abundant diagnosis information and wide applications, so that its comprehensive performance is far beyond that of the diagnosis model based on traditional fuzzy algorithm

    摘要為了克服傳統模糊演算法的診斷系統建模復雜、改進難度大、不利於經驗積累困難的缺點，在復雜系統的狀態診斷中引入了改進的模糊演算法，創建了基於改進模糊演算法的復雜系統狀態診斷模型，並以一個實例分別比較驗證了基於傳統模糊演算法的狀態診斷模型與基於改進模糊演算法的復雜系統狀態診斷模型，結果表明基於改進模糊演算法的復雜系統狀態診斷模型雖然在診斷速度方面稍遜一籌，但具有建模簡單、模型改進容易、診斷準確、診斷信息豐富、適用性廣泛等顯著優點，其綜合性能大大優于基於傳統模糊演算法的診斷模型。
  4. It has good computational cost because of avoiding any inverse operation and optimal ordering. it also utilizes double - directional detection and diversity combine technology to migrate the error propagation, and then improve the ber performance

    它不需要進行任何形式的矩陣求逆運算和最優信號排序操作，因此具有良好的演算法復雜度，同時它利用雙向檢測策略與分集合併技術來抑制誤差傳遞，提高了演算法的檢測性能。
  5. One of its most important applications is to improve the optimization algorithms by evaluating the relevant derivatives information efficiently the aim of the work includes : to establish and study new algorithms - - cf - pcg algorithrns with ad ; to establish and study the extended cf - pcg algorithm ( ecfpcg ). cf - pcg algorithms with ad is proposed on the basis of cf - pcg algorithms with sd, in addition to replace sd with ad, there are other significant modification to the algorithms. the results by theoretical analysis and numerical experiments implicate that cf - pcg algo - rithm with ad is an improvement to newton method with ad

    論文首次將自動微分應用於牛頓- pcg型演算法，構造了新演算法，並從理論上比較了新演算法與牛頓法的效率，證明了新演算法的效率嚴格大於牛頓法的效率，而且新演算法與牛頓法的效率比分別是問題維數n和目標函數復雜性的嚴格單調遞增函數，當n趨于無窮大時，這個效率比的下界以ln （ n ） ln2的速率趨于無窮大。
  6. For boosting the efficiency of web ir and reinforcing the interaction between system and user, this thesis improves the completeness and time complexity under some situation of the lingo algorithm, which is used for web page on - line clustering

    為提高web信息檢索的效率，加強系統與用戶的動態交互，本文改進了一種適合網頁在線聚類的lingo演算法，加強了演算法的完備性，降低了部分情況下的時間復雜度。
  7. The first key technique : using plain - text cipher and md5 message - digest algorithm to ensure stb and dhcp server ' s certificate and secure the stb and server ' s communications - the second key technique : using hmac algorithm to realize the safe functions - the third key technique : using ipsec to realize safe functions o those three methods " complexity increases in turn and the degree of the security increases as well which depend on the frame of the methods and the complexity of the algorithm. all theose three methods use the unique serial - number or a special slip - window to defend replay attack

    主要採用三種安全方案實現：第一種：利用約定的明文密碼驗證機頂盒與dhcp服務器的合法身份， md5驗證信息合法性：第二種：利用hmac演算法驗證機頂盒與服務器身份，信息合法性；第三種：利用ipsec驗證機頂盒與dhcp服務器身份與信息合法性。每一種方案中皆採用包序號唯一法或者滑動窗口法保證重放攻擊。此三種方案復雜度依次增加，安全度依次升高，主要取決于演算法的復雜度與架構的搭建。
  8. Facing to manufacturing system, this paper analyzed its characters and evolvement of production management modes, demonstrated that lean production and human - based theory were practical ways to reform our manufacturing systems fit for the reality. a division method was raised to separate the job - scheduling problem into shop and station types, and emphasis was pressed on the study of partheno - genetic algorithm ( pga ), a revised genetic algorithm, to calculate this problem. a new kind of gene joint - move algorithm was also raised

    針對製造系統，分析其生產管理模式的特點和變遷，論證了精益生產和以人為本的思想是適合現階段我國實際的製造系統管理模式改造途徑，對其中的主要具體問題?作業計劃調度提出shop （車間）和station （工作站）型兩分法，求解上重點研究了遺傳演算法的改進型式?單染色體遺傳演算法（ pga ）的基本理論，提出一種基因聯合移位運算元，證明了演算法的有效性與優越性，研究了如何將pga應用於製造系統作業調度這一復雜的組合優化問題，針對生產中總時間最短和jit兩種生產性能指標，給出了具體的解決方案及運算過程。
  9. Furthermore, combined the execution rule of petri nets and the search algorithms of tree, an innovative scheduling method is proposed by applying a heuristic search to the state space of petri nets. specially, by introducing heuristic function, depth - first and width - first is mixed in the search course ; thereby a feasible solution can be generated in a reasonable amount of time

    其次，在所得柔性製造系統petri網模型的基礎上，通過把樹的遍歷演算法與petri網的運行規則相結合，提出了一種啟發式調度演算法，通過在演算法中引入反映問題特徵的啟發函數，把廣度優先和深度優先搜索有機地結合，使得該演算法能夠在合理的時間復雜度內得到滿足精度要求的優化調度。
  10. Another 20 kinds of non - designed contact points are given for the first time. contact determining algorithm of all the above contact types is given using z - buffer algorithm for 3 - d observation, and simulation results show high accordance with results of vector - associated method. simulation for non - designed contact mode with random initial conditions has been done too, and statistics from the simulation indicates that it is important to predict non - designed contact points in practical rvd efforts

    全文的工作包括以下幾個方面的內容: 1 .建立了周邊式對接機構的復雜幾何外形的數學描述，描述了對接初始條件范圍內，兩對接機構相互接近、捕獲過程中可能出現的20種設計接觸模式，並針對初始接觸點首次提出20種非設計接觸模式;利用計算機圖形學中可見面判別的z -緩沖演算法原理，給出了所有接觸模式的檢測演算法，該演算法的模擬結果與輔助向量法高度一致，驗證了演算法的有效性;進行了300組確定首次接觸點的隨機模擬，統計結果表明，在飛船上實時進行非設計接觸模式的預測是非常重要的。
  11. On views separation and coordinate standardization, a coordinate axis projection - based approach and an image scanning - based approach are proposed for views separation, the former reduces the compare times of 2d primitive in drawings and raises the efficiency simultaneously, the latter can separate free nember views of engineering drawing accurately and it has no correlation with complexity of primitive, then, two sets of 2. 5d coordinate systems are introduced as intermediates to relate the 2d original drawing system to the 3d space projection coordinates anfd a formal technique is developed for constructing transformation matrices between coordinates

    3 .在工程圖視圖分離和坐標規格化方面，提出了改進的坐標軸投影分離演算法和基於圖像掃描的視圖分離演算法。前者減少了工程圖中二維實體的比較次數，提高了運行效率;後者可以準確分離具有任意視圖數目的工程圖，且演算法的穩定性與邊界復雜度無關。通過引入二維半中間坐標系推導出了從繪圖坐標繫到空間投影坐標系轉換的轉換運算元並給出了基於轉換運算元的坐標規格化演算法。
  12. Based on the combination of the adjacent diffusion method and the selective smoothing filter, a new anisotropic diffusion algorithm for image enlargement is proposed, which is called as the adjacent diffusion and selective smoothing algorithm ( adass )

    摘要提出了一種新型的各向異性擴散圖像放大的鄰域擴散選擇平滑法（ adass ） ，將鄰域擴散法與選擇平滑濾波器相結合，降低了演算法的復雜度，並提高了圖像的放大質量。
  13. A study on modeling, scheduling and optimal control problems for a class of hybrid manufacturing systems is investigated. in this framework, the discrete entities have a state characterized by a temporal component whose evolution is described by event - driven dynamics and a physical component whose evolution is described by continuous time - driven dynamics, thus it is a typical hybrid system. not only the optimal control for manufacturing process like that discussed in many references but also the optimal machining sequence are considered in this paper. the whole problem is solved by a two - level optimization method : at the inner loop, for any given machining sequence of the jobs, the optimal control for manufacturing process is considered ; while at the outer level, an improved genetic algorithm is used to decide the optimal machining sequence of a batch of jobs to be processed. finally, some examples are given to illustrate the validity of the algorithm

    研究了一類單階段混合製造系統的建模、分析與調度問題，這類系統既包含離散事件動態，也包含連續時間動態，前者用排隊網路描述，後者用微分方程描述.不僅考慮了a這類系統的最優控制問題，而且考慮了工件進入生產線的最優時間，並用一個復雜的優化模型描述，同時給出了一個兩層優化方法，內層給出對給定工件序列的最優控制，而外層用一改進的遺傳演算法求解工件進入生產線的最優時間序列.若干模擬實例說明了演算法的有效性
  14. Compared to mle procedures, mcmc algorithms are more stable and the problems such as searching the multiple maximal are avoided

    Mcmc演算法與經典的mle方法相比，它具有更好的穩定性，同時也避免了用mle方法所帶來的極值優化的復雜性。
  15. The encoding complexity of ldpc codes length n seems indeed to be of order n2, the dissertation study the coding scheme with linear time complexity. afterward, it introduces the coding schemes used in dvb - s2 and gets the parity check matrix by simulation

    針對ldpc碼通用編碼演算法的復雜度與碼長的平方成正比的問題，重點研究了ldpc碼的快速編碼方法，總結出了使ldpc碼能夠達到線性編碼的途徑。
  16. Closed combines the fuzzy control algorithm with lonworks fieldbus network can accomplish the field level fuzzy control but also realize high - level complex fuzzy control. both colse cooperations can construct a fuzzy fieldbus control system that the capability is fine and the function is perfect

    介紹如何將模糊控制演算法與lonworks現場總線網路系統緊密結合，既可完成現場級的模糊控制，又可實施高級復雜模糊控制，兩者的密切配合，構成了性能優良、功能完善的模糊現場總線控制系統。
  17. The forth chapter focus on the researches of decoding algorithm, first studies the decoding theory and decoding approaches of several iterative message passing algorithms for ldpc code, because of the conflict between simplification and reduced performance of bp decoding algorithm, the thesis analyzes the calculation complexity of each algorithm, and simulates the performance of each algorithm, by considering the tradeoff between hardware complexity and error performance, we get two algorithms which are much easier to implement : bp - based and normalized bp - based decoding algorithm, especially, the last one achieves considerable improvement with almost the same complexity

    第四章對ldpc碼譯碼演算法進行了深入研究，給出了基於置信傳播的幾種譯碼演算法的原理和步驟，圍繞著bp演算法的簡化與譯碼性能下降的矛盾，研究了每一種譯碼演算法的復雜度分析，並相應地給出了每一種譯碼演算法的模擬性能曲線，綜合考慮譯碼性能和譯碼復雜度兩個方面，從而得出了適合硬體實現的演算法: bp - based和normalizedbp - based演算法，後者在基本不增加譯碼復雜度的情況下，對譯碼性能有較大的提高。
  18. Simulation shows that the implementation complexity is reduced significantly at negligible performance loss compared to the soft - in - soft - out decoding turbo equalization

    通過模擬表明，這三種演算法與使用軟入軟出譯碼的turbo均衡相比，性能相近，但是計算復雜度小了許多。
  19. In this chapter, we discuss that it is not true that pfq algorithm when approximates a fluid rate - proportional server with seff policy can achieve the same worst - case fairness as that of wf2q. we give a new value of worst - case fairness index for it and show that is inferior to the index of wf2q

    與目前性能較好md - scfq演算法相比，雖然smfq演算法公平性稍差，但演算法的計算復雜性大大簡化，更適合在高速網路中應用，因此它是當前rps類流量調度演算法中綜合性能最佳的演算法。
  20. According to these definitions, network fault management is transferred to graph research. diffusion automated fault management algorithm ( dafma ) is proposed in this part and the correctness and time complexity of it are proved carefully

    以圖為基礎，文中提出了擴散法自動網路故障管理演算法dafma ，並對該演算法的正確性、時間復雜性做了嚴格分析與證明。
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