rough approximation 中文意思是什麼

rough approximation 解釋
粗近似
  • rough : adj 1 粗糙的 （opp smooth）; 凹凸的，崎嶇不平的 （opp level）。2 粗毛的，多毛的，蓬亂的（頭發）。...
  • approximation : n. 1. 接近；近似。2. 【數學】近似值。3. 概算，略計。
  1. A real rough set space and the concepts of real lower and upper approximation corresponding to real - valued attributes is studied. a rhombus neighborhood for som is proposed, and the combination of som and rough sets theory is explored in the dissertation. according to the distance between the weight of winner node and the input vector in the real rough sets space, some new weights learning rules are defined

    本文提出採用菱形鄰域代替一般的方形鄰域，可以減少待修正權重的數目;並利用實數粗糙空間的下、上近似集的精確概念劃分自組織映射的輸出結果，使得改進后的映射結果中各類樣本點之間有明顯的間隔，易於進行分類識別。
  2. Taking this as a base, a concept of believability has been introduced, and the expression method of criterion of fuzzy critical hole expansion ratio under the upper and lower approximation set of rough set theory was advanced

    在此基礎上，引進可信度的概念，提出模糊臨界空穴擴張比判據在粗糙集理論的上、下近似集下的表示方法。
  3. As a rough approximation of the rate of income growth per capita, one can subtract the rate of increase in population from the rate of growth in total income.

    人們可從總收入增長率中減去人口增長率，得出人均收入增長率的一個粗略近似值。
  4. Then based on kirchhoff approximation theory, the formula of the coherent and incoherent scattering intensity of plane wave from two dimensional dielectric normally distributed rough surface are derived, and the scattering intensity of a planar, rough surface of unit area

    然後從粗糙面散射kirchhoff標量近似理論出發，得到了平面波對高斯分佈的二維隨機粗糙面的相干散射和非相干散射強度表達式，並給出了單位面積粗糙面非相干散射的表達式。
  5. The correlation may be used with reasonable confidence for all gas-liquid systems and as a rough approximation for liquid-liquid systems.

    這個相關規律用於所有的氣-液相體系是可信賴的，但對液-液相體系來說只能算是粗略的近似。
  6. Since human dimensions vary, any measurement so taken would be only a rough approximation and not to be trusted where precision was required

    由於各人的身材大小不等，這種度量方法只能是一種粗略的近似值，凡是需要精確計量的場合，這種方法就不可信了。
  7. Properties and relativity of logical operator sets and their corresponding fuzzy rough approximation operator sets

    邏輯運算元集與模糊粗糙近似運算元集的性質及相關性
  8. In order to propose an efficient solution to approximating smooth or rough curves and surfaces. this thesis gives the fractal approximation models. we also give the satisfactory application of m odels in morphing

    為了統一逼近光滑曲線曲面與具有分形特徵的自然界復雜曲線曲面，本文研究了基於投影迭代函數系統模型的曲線曲面的統一分形逼近模型，並進一步給出了此模型在曲線曲面變形中的應用。
  9. We validate that the multi - level rough set approximation induced by a sequence of reflexive relations is a special case of cbm - rs

    經過驗證，二元自反關系序列下的多層粗糙集模型是cbm - rs模型的特例。
  10. The exact express of the intersection and union of the fuzzy sets defined by the rough membership function is given. two extension model of rst are introduced and their characters are discussed. we also discover the changes of the upper ( lower ) approximation after the attributes were added to or removed from the original attribution set

    首先得到了由粗糙隸屬函數所定義模糊集的交與並的確切表達，改進了以往文獻的結果；其次，提出了兩種粗糙集的擴展模型，並對這兩種模型的性質進行了討論；最後，得出了屬性集增加或刪除屬性後集合的上下近似的變化關系。
  11. This paper discusses the application of rough set theory on algebra system - group, introduces such concepts as the lower and upper approximation on group and on group of quotient, points out and gives proof of several related properties

    摘要通過討論粗糙集理論在代數系統群上的應用，引入了群中的上、下近似和商群中的上、下近似等概念，提出並證明了與此相關的性質。
  12. From the mapping relationship between information vector matrix and relative vectors, rough approximation, attribute relative reductions and selecting optimal attribute reductions set algorithms based on binary vector matrix were proposed

    摘要根據向量矩陣與向量之間的映射關系，研究了基於二元向量矩陣演算法的粗糙近似、屬性約簡以及最優屬性約簡集的獲取。
  13. Multiple scattering from two - dimensional rough surface with large surface root mean square ( rms ) slope is studied with kirchhoff approximation

    摘要利用基爾霍夫近似研究了表面均方根料率較大的二維粗糙面的多次散射問題。
  14. Rough approximation operators based on mappings

    基於映射的粗糙近似運算元
  15. Fuzzy rough approximation operator based on inclusion degree

    基於包含度的模糊粗糙近似運算元
  16. On the rough approximation of non - convex set

    關于非凸集的粗糙近似
  17. The independence of the axioms characterizing fuzzy rough approximation operators

    模糊粗糙近似運算元公理集的獨立性
  18. Modifications of definitions for two pairs of dual rough approximation operators

    關于兩類對偶粗糙近似運算元定義的修正
  19. Without testing they cannot be accuratly set. they are there as a guide to give a rough approximation of the skill

    只有通過測試才能設置合理。這些技能的粗略的近似值只是一些指引而已。
  20. This method takes advantage of the lower approximation in rough sets to do the first data packing, and then, according to the value - taking probability of the attribute value, finds the result to do the second packing, thus accomplishes the completion of incomplete information system

    該方法利用粗糙集中下近似集的性質進行初次數據填補，然後根據屬性數據的取值概率函數求出的結果進行二次填補，從而完成對不完備信息系統的完備化處理。
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