近似值度量 的英文怎麼說

中文拼音 [jìnsìzhídùliáng]
近似值度量 英文
approximate value measure
  • 近 : Ⅰ形容詞1 （空間或時間距離短） near; close 2 （接近） approaching; approximately; close to 3 （親...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  • 近似 : approximate; similar; approach; approximation; roughness; propinquity
  • 度量 : 1. （計量長短） measure; metric; mensuration 2. （寬容人的限度） tolerance; magnanimity
  1. 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
  2. The approximation analysis result of band dipole model is obtained on the basis of the theory of mfl. the electromagnetic distribution feature of the defect in the steel panel is studied by means of simulation. the leakage magnetic distribution of the two defects and four defects plural and the defects in the column differently in the width are also assayed. conclusions that factors affecting flaw magnetic leakage to the panel also affect the column and magnetic leakage bx should be the feature of the flaw identification to several flaws are drawn

    在對漏磁檢測原理進行詳細介紹的基礎上，得出了帶偶極子模型的近似解析解，並以有限元數值模擬分析為主要手段，以鋼板上缺陷為對象，分析了各因素對缺陷漏磁場產生影響的不同規律，同時模擬分析了板上平行的兩條裂紋，四條裂紋以及柱體上寬度不同時的裂紋的漏磁場分佈特徵，得出結論:影響板上缺陷漏磁場的諸因素會對柱體上缺陷漏磁場產生同樣的影響;對于多條裂紋，宜用漏磁分量bx作為缺陷識別的特徵量。
  3. Based on the lambert - beer ' s law and considering the determination of ultramicro amounts of substances by aas, an approximate linear relationship between the transmittancy and concentration of the measured substance was derived

    摘要對原子吸收光譜法在超微量測試中，給出了朗伯比耳定律的近似公式，建立了測定值和透光度的變化值之間的近似線性關系。
  4. Our treatment shows in the raman effect case, mnls solitons, the same as nls solitons, keeps its energy, initial center and initial phase unchanged. however, the raman effect, not the same as nls solitons. reduces its amplitude, widens its width and under the same conditions, the self - frequency shift of mnls soltions is closer to the result of numerical simulation. in the raman effect together with frequency filters case, mnls solitons, the same as nls solitons, keeps initial center and initial phase unchanged and bandwidth - limited frequency filters can make the mean frequency of mnls soltion stand a steady value at the red side of the initial mean frequency, i. e. suppress the self - frequency shift of mnls soltions. and that, the other physical parameters of mnls soltion last stand a steady value. however under the same conditions, the steady value of the mean frequency of mnls soltions is closer to the initial mean frequency and the result of numerical simulation

    有所不同的是， raman效應雖然不改變孤子能量，但會引起孤子峰值的下降和寬度變寬，且在同一條件下， mnls孤子微擾理論得到的自頻移比nls孤子微擾理論得到的更接近直接數值計算結果。有限帶寬的頻率濾波也不引起mnls孤子初始中心、初始位相的改變，選取適當的頻率濾波器參數值能使孤子的平均頻率穩定在初始平均頻率的紅側一穩定值，抑制了自頻移，而且孤子的各物理量最後都穩定在一穩定值，這些與nls孤子微擾理論都是類似的。有所不同的是，寬度為飛秒量級下， mnls孤子平均頻率的穩定值更接近初始平均頻率，更接近數值計算結果。
  5. In fact, the adherence of young and old concrete belongs to the adherence research work of bimaterial. the simulation calculation shows that in the range of criterion provision of young and old concrete that the formula for calculating the splitting tensile strength of a monolithic concrete specimen can be used to a concrete specimen of young and old concrete when the difference of elastic modulus of young and old concrete is small

    新老混凝土的粘結實際是彈性模量不同的兩種材料? ?即雙材料的結合問題。本文通過數值模擬計算結果表明，在規范規定的修補結構新老混凝土強度等級差值范圍內，新老混凝土彈性模量相差不大的情況下，新老混凝土粘結劈拉強度可近似採用整體混凝土劈拉強度計算公式。
  6. 2 ) systematically introduced parameter estimation of distributed sources on the base of models, including the maximum likelihood estimate, least squares estimator, dspe, dispare, etc. 3 ) studied four low complexity algorithms : one order approximation, two point sources approximation, traditional beamforming and relax of parameter estimation

    2 ）在模型基礎上系統地介紹了已有分散式目標參數估計方法，包括最大似然與最小二乘演算法， dspe和dispare演算法等。 3 ）研究了四種低復雜度演算法：一階近似演算法、兩點近似的演算法、常規波束形成演算法和relax演算法，這些演算法都是次優演算法，但計算量小，具有實用價值。
  7. The results of numerical experiments, using the four - dimensional variational data assimilation system of the nonhydrostatic mesoscale model mm5, show that : the tangent linear model and adjoint model conducted by keeping the " on - off " switches the same as the basic state, can provide a good approximation of the first - order information to the nlm perturbation and a good descent direction for the minimization procedure ; switching on and off at every other time step in the kuo cumulus parameterization scheme do n ' t impact the convergence rate of cost function ; the existence of the switches do n ' t impact improvement to the mm5 model rainfall prediction because that not only specific humidity, but also wind, temperature and pressure are assimilated into the model

    非靜力中尺度數值模式mm5的四維變分資料同化系統進行的數值試驗結果表明： 「開關」變量保持與基態一致，所構造的切向線性模式能夠提供關于非線性模式擾動的一階近似，伴隨模式所計算的梯度值能夠為最小化過程提供較好的下降方向；郭氏降水參數化方案中對流每隔一個積分步的交替發生並不影響目標函數最小化的收斂速度； 「開關」變量的存在也不影響將風、溫度、氣壓和比濕結合起來同化對mm5降水預報準確性的提高。
  8. The best combination of size parameters of supported domain and sub - domain is obtained. upwind scheme is developed to eliminate the instability of solutions obtained by using mlpg approach. 2

    分析了試函數構造的近似方法、節點和輔助點數量、多項式基函數位數和支撐域尺度對數值模擬結果的影響。
  9. 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。
  10. Thirdly, zero energy - error is introduced and used to optimize combined hybrid axisymmetric finite elements through adjusting the combined factor. the influence of combined factor on axisymmetric elements is discussed. finally, the main points of the whole paper are summed up and some further thoughts are put forward

    數值實驗結果表明：能量協調和近似能量協調的軸對稱元都具有高精度、不發生poissonlocking和對網格畸變不敏感的特點；經過優化之後的軸對稱元性能能夠得到進一步改善。
  11. We reconstructed the phase space and calculated the nonlinear parameters such as correlation dimension, the largest lyapunov exponent, approximate entropy, and l - z complexity of the data. it can be conclud from the results that the reconstruction of heart beat rate signal is strange, its correlation dimension is between 5 to 7 and have the character of fractal dimension, its largest lyapunov exponent is larger than zero, its approximate entropy and l - z complexity are obviously differ from noise. we can draw a conclusion from all above : the heart beat rate signal is n ' t simple noise, it is high dimensional chaos obeys certain dynamical law

    我們還對信號進行了相空間重構，計算了信號的關聯維數、最大lyapunov指數、近似熵和復雜度這幾個非線性特徵量，我們發現，心率信號的吸引子是奇怪吸引子，關聯維數介於5到7之間，具有分維的特徵，其最大lyapunov指數大於0 ，其近似熵值和復雜度值明顯區別于噪聲，這說明心率信號不是隨機噪聲，它是服從確定性動力學規律的高維混沌信號。
  12. The second aspect : from qgp kinetic equations with collision integrals, by using the relaxation time approximation, we calculate the distribution functions to the second order correction. we obtain the distribution functions for quarks ( and anti - quarks ) and gluons under perturbation of the fluctuation of the color field. then in the high - temperature - low - density area, we discuss the characteristics of the distribution functions, and use t hem to get the net baryon density and the energy density

    第二，從有碰撞項的qgp動力論方程出發，忽略自旋，在色漲落擾動下，利用弛豫時間近似，得到夸克和膠子分佈函數的二級修正，通過數值分析重點討論了高溫低密情況下qgp中成分粒子分佈函數的特性，並且由分佈函數得到凈重子數密度和能量密度。
  13. Considering that the ferrite core is often made from good permeable material, the dissertation presents the condition that the normal component of the magnetic field strength is zero approximately at the inside surface of good permeable material, i. e. bn = 0 to determine the eigenvalues for the separation constant. during the solving process, the solenoid coil is supposed to be wound closely by infinite symmetrical delta - coils

    考慮到磁芯通常是由導磁性能非常好的軟磁材料構成，本文提出利用靠近良導磁材料內側磁場強度法向分量近似為零，即b _ n 0 ，這一邊界條件，來確定邊值問題中的本徵值。
  14. This algorithm adopts peak error or maximum amplitude error criterion to control the level of distortion in pipeline leak signals, and doesn ’ t change the subsequent location error of adaptive time - delay estimation in the case of a small quantization error, so as to implement the near - lossless compression of pipeline leak signals

    該近無損壓縮演算法設計了基於峰值誤差準則的量化方案對管道泄漏信號的失真度進行控制，在量化誤差較小時並不影響后續自適應時延估計的定位誤差，從而實現對管道泄漏信號的近似無損壓縮。
  15. It is found that : ( 1 ) for linear slope, redistribution of incoming energy flux in modenumber space depends on both the modenumber of incident waves and the ratio of the slope of incident wave ray to slope of topography ; both the transmitted and reflected energy flux ( only for supercritical linear slope ) focus near one or two modenumbers ; for supercritical linear slope, the energy flux scattering to higher modenumbers becomes larger and the energy flux to lower modenumbers becomes smaller as the slope of incident wave ray comes near to slope of topography ; ( 2 ) for convex slope, energy flux is redistributed in wide - range modenumbers and also show peaks on lower - modenubers and higher - modenumbers ; ( 3 ) for concave slope, energy flux is also redistributed in wide - range modenumbers, but does not show peaks on higher - modenumbers as supercritical linear slope and convex slope do ; ( 4 ) the total energy flux scattering to higher modenumbers is approximately equal to the total energy flux to lower modenumbers for internal waves propagating over both convex slope and concave slope, which means the concave slope is the same efficient to convex slope in scattering energy flux to higher modenumbers ; ( 5 ) for convex slope, the wave ray reflected from near - critical topography can extend to deep ocean and shallow shelf, while for concave slope, the wave ray reflected from near - critical topography can only extend to limited distance, then meet the topography and be reflected again ; generally the shear of the internal waves reflected twice from concave slope is not enhanced while the enhanced shear does also appear before second reflection takes place, the enhanced shear can bring about intense mixing, so internal waves reflected from concave slope can also produce marked mixing near critical slope

    3 、內波在凹地形上傳播時，能通量在模態上的分佈范圍也比較寬，但與凸地形和超臨界線性斜坡地形相比，能通量在高模態上的分佈沒有明顯的峰值。 4 、從總的能通量來講，內波在凸地形和凹地形上傳播時，向高模態散射的能通量與向低模態散射的能通若十地形下內波傳播及內潮生成問題的理論解量近似相等，這意味著二者在向高模態散射能通量方面具有同等效率。 5 、凸地形上臨界點附近的反射，反射波的波射線能夠延伸到深海和陸架，凹地形上臨界點附近的反射，反射波的波射線很快遇到地形發生二次反射，一般來講二次反射后回到深海的波動其速度剪切並不很強，但是在進行二次反射之前的區域，速度剪切仍然很強，因而內波在凹地形上的反射依然能夠在地形附近區域，產生強的速度剪切區，誘發混合。
  16. Comparing with traditional successive approximation process algorithm, our method can improve quality of reconstruction result while speeding up convergence. further, proper threshold is adopted to enhance the robustness of the histogram constraint.,

    和傳統的連續近似迭代法相比，該方法在加快收斂速度同時能夠有效地改善重建質量，同時我們採用閾值對先驗直方圖的影響進行動態地控制，有效地增強了直方圖約束的抗干擾性。
  17. Though the desalinized depth was different under different cumulative infiltration, the ratio of desalinized depth and wetting front distance was about 0. 342 and the ratio of desalinized depth and cumulative infiltration was 0. 862

    盡管不同濕潤深度對應脫鹽深度不同，但脫鹽深度與濕潤深度的比值卻近似為0 . 342 。且脫鹽深度與入滲水量的比值也近似為0 . 862 。
  18. Then a new system of nonlinear equations can be formed from the variation gray of same point in multiple images and the optimum solution of the system can be obtained from gauss - newton and levenberg - marquardt algorithms, so that the normal vector at that point of the surface can be defined

    再根據多幅圖像上固定位置一點的灰度值變化列多個非線性方程，以gauss - newton演算法和levenberg - marquardt演算法為基礎求非線性方程組的最優近似解，將選取點的法向量確定下來。
  19. The contrasting analysis is carried out against approximate calculation, numerical simulation and the real measuring result of flow - in direction stress along the die - entrance in the rectangular drawing. it is considered that in the condition of non - uniform solution, part calculation has credibility to some extend

    摘要針對矩形盒拉深中凹模口流人方向應力的近似計算、數值計算和實際測量結果進行了比較分析，認為在尚未得到統一解的情況下，分割計算具有一定的可信度。
  20. Thus ， for instance ， it may come as a shock to mathematicians to learn that the schrodinger equation for the hydrogen atom is not a literally correct description of this atom ， but only an approximation to a somewhat more correct equation taking account of spin ， magnetic dipole ， and relativistic effects ； and that this corrected equation is itself only an imperfect approximation to an infinite set of quantum field - theoretical equations

    因此，舉例來說，對數學家而言，了解到下述情形可能會令其驚愕不已，即薛定諤（ schrodinger ）的氫原子方程式並非是對該原子作出的一種絕然正確的描述，而僅僅是個近似值，趨近於一個在某種程度上更為正確的將自旋、磁性偶極子、以及相對論效應考慮在內的方程式；而這個得以糾正的方程式就其本身而言也只是一個不完美的近似值，趨近於無窮無盡的一整套量子場論方程式。
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