least-square fit造句
例句與造句
- By least - squares fit of the measured data of speckle correlation function to the obtained quantitative expression , parameters of random surfaces can be extracted
采用最小方差擬合的方法，將散斑相關(guān)函數(shù)的測量結(jié)果與所得到的表達式進行擬合，可以提取出隨機表面參量。 - Experimental result , such as excitation potential in frank - hertz experiment , can be quantitatively presented with least - squares fit instead of the average method
通過具有教學(xué)普遍意義的“夫蘭克赫茲實驗”中原子定態(tài)能級分析，指出常用的平均法或“類平均法”的局限性。 - The parameters obtained by the least - square fitting deviate from the relations derived from ab formula , abc formula and harris formula , but are closer to relations deduced from ab formula and abc formula
由最小二乘法擬合計算出參數(shù)，討論參數(shù)之間的關(guān)系，發(fā)現(xiàn)他們對ab公式、 abc公式和harris公式的預(yù)言存在不同程度的偏離。但相對而言， ab公式、 abc公式的預(yù)言較好。 - The least - squares fitting for regular surfaces , such as planes , spheres , cones , tori to 3d data points is researched . the efficiency of computing is improved greatly and the effect of singularities on fitting is avoided
研究了規(guī)則曲面的擬合算法，給出最小二乘法擬合平面、球面、圓柱面、圓錐面、圓環(huán)面等規(guī)則曲面的方法，這些方法的顯著優(yōu)點是提高了計算效率，避免了擬合過程中奇異點的影響。 - 3 j uttler b , felis a . least - squares fitting of algebraic spline surfaces . advances in computational mathematics , 2002 , 17 : 135 - 152 . 4 yang z w , deng j s , chen f l . dynamic implicit curve reconstruction based on approximate geometric distance
其中廣義特征向量擬合模型能較好地反映目標(biāo)形狀的拓?fù)浣Y(jié)構(gòu)，距離函數(shù)則近乎完美地刻畫了目標(biāo)的幾何信息，因此所得初始隱式曲線曲面能很好地適用于動態(tài)重構(gòu)的迭代過程。 - It's difficult to find least-square fit in a sentence. 用least-square fit造句挺難的
- Then , the hilbert transform is applied to each modal response to obtain the instantaneous amplitude and phase angle time histories . a linear least - square fit procedure is proposed to identify the natural frequency , damping ratios , physical mass , damping and stiffness matrices from instantaneous amplitude and phase angle for each modal response
然后對各階模態(tài)響應(yīng)進行hilbert變換，得到瞬態(tài)幅值和相位角的時間歷程，再運用線性最小均方擬合來識別自然頻率、阻尼比、質(zhì)量、剛度和阻尼矩陣。 - Phase - shifting errors have a great influence on the measuring - accuracy . a few of algorithms have been developed to solve linear phase - shifting errors , but ca n ' t solve the problem of random phase - shifting errors . an iterative least - squares fitting method has been proposed by in - bok kang to solve random phase shift errors in each interferogram
在這種方法中相移的誤差對測量結(jié)果的準(zhǔn)確性有較大影響，雖然已經(jīng)出現(xiàn)了不少算法能解決線性相移誤差，但要解決相移過程中的隨機相移誤差問題，還存在一定的困難。 - For h - d scattered data , local weighted least - squares fitting ( llsf ) methods for approximation and interpolation are respectively put forward and the latter is got by adjusting weight function in the former case , and the interpolating method is also used to construct hyper - surface models with the radial function . the problem of choosing weight function during local least square approximation is discussed and two good weight functions are given : one with a parameter , the other with no parameter . based on them
二、對非規(guī)則區(qū)域上分布的h - d數(shù)據(jù)，提出了散亂數(shù)據(jù)超曲面擬合的局部最小二乘逼近法。通過對局部最小二乘逼近的權(quán)因子作適當(dāng)?shù)母倪M，得到了擬合精度較高的局部最小二乘插值法，還用徑向基函數(shù)構(gòu)造了超曲面模型，找到了一種性質(zhì)好帶參數(shù)的權(quán)函數(shù)以及另一種有著普遍精度性質(zhì)的不含參數(shù)的權(quán)函數(shù)，獲得了較好的逼近效果。