最小二法 的英文怎麼說
中文拼音 [zuìxiǎoèrfǎ]
最小二法
英文
least square method-
Abstract : artificial neural networks has been applied to simultaneous determination of fluorene and acenaphthene by ultraviolet spectrophotometry. after compared the results of the synthetic samples obtained from the method above mentioned with those from partial least squares ultraviolet spectrophotometry, it shows that satisfied prediction can be obtained by them
文摘:用人工神經網路-紫外吸光光度法不經分離同時測定芴和苊，並與偏最小二乘-紫外吸光光度法比較.對合成樣品進行分析.結果表明，人工神經網路法同偏最小二乘法一樣能獲得滿意的分析結果In the presented method, the point estimations of the model parameters, aandb in the new model, are given by the least square method. the confidence interval for the parameter b is given as well. an engineering illustration is used to compare the result of the presented method with those of amsaa - bise model and duane model
該模型充分考慮了增長過程中的各種可得信息，採用非參數方法得到多臺系統在各同步停止試驗時刻的可靠度，並利用最小二乘法擬合求得該模型中參數a ， b的點估計值，以及b的置信限。In accordance with the problem that the fcm algorithm is quite time - consuming for search out cluster cancroids and may not be suitable for on - line modeling and control. this dissertation proposed an improved fuzzy identification method based multistage random sampling fuzzy c - means clustering algorithm ( mrfcm ). it has higher approximate precision and the cpu time has slowed down sharply compared with the common fuzzy
Johnyen和liangwang介紹了幾種應用於模糊模型的信息優化準則，本論文在此基礎上對統計信息準則進行一些改進，並與快速模糊聚類和正交最小二乘方法結合，提高了模型的辨識精度和泛化能力。To overcome the disadvantages of the linear calibration methods such as mlr and pls, least - squares support vector machine ( ls - svm ) is introduced to nir quantitative calibration in this thesis. for a set of diesel cetane number ( cn ) samples, the ls - svm model obtains the best performance in the cn prediction, compared with the mlr and pls model
為克服mlr與pls等線性校正方法的局限性，本文將最小二乘支持向量機（ ls - svm ）演算法用於近紅外光譜的定量校正，並以一批柴油十六烷值樣品數據為例對以上方法進行了比較。In the wafer - cycle fitting algorithm, comparing with circumgyration radius approach, track fitting approach, and least square circle fitting approach. in the wafer pre - alignment system, the wafer square fitting algorithm - least square circle fitting approach, based on optical linear ccd sensor, as well as the theoretical error analyze of this algorithm
在晶圓檢測演算法方面，比較回轉半徑法、軌跡擬合法以及最小二乘圓法，選擇光學線陣ccd的晶圓圓心最小二乘圓法作為系統晶圓圓心的檢測方法。2. the creep data were processed and analyzed with mathematical method. based on the experimental results, curve of creep rate versus stress and of creep rate versus temperature were curved
用最小二乘法對蠕變速度與應力及蠕變速度與溫度- t的幾組蠕變數據進行擬合，得到相應的方程。First the sketch / datum plane is fitted by least - square distance, then the extruded direction or axis with the flank points of the cloud is extracted in quadratic paogramming arithmetic, and certain points projected to gain 2d sketched datas. feature points are defined to segment the sketch datas, and the sketch profile is generated by fitting separately the line and circle segment
使用最小二乘方法擬合草圖基準平面，採用二次規劃方法提取拉伸方向和旋轉軸線，然後將數據點投影以獲取草圖數據，通過柵格劃分提取草圖邊界輪廓數據，再對這些邊界數據進行基於特徵點的分割，以直線和圓弧段擬合出草圖輪廓。In digital relay, the percentage of noise will increase rapidly with the increase of sampling rate when derivation calculus is substituted by sampled difference term. to solve this problem, a new method using fragment function integrated with the least square algorithm is proposed in this paper. the influence of white noise is greatly reduced and the accuracy of the dead angle calculation is nicely improved after adopting the new method
在數字式保護中，如果用差分代替求導將導致噪聲的百分比誤差隨著采樣頻率的提高而劇增，本文對此進行了分析並提出了用分段樣條函數最小二乘法來計算電流波形的導數值，以便在提高采樣率的同時降低噪聲誤差的影響，並將其應用於基於32位浮點dsp的新型變壓器保護裝置。The dispersion model, with axial dispersion only was used to describe the liquid flow in the downcomer. the model parameters were fitted by the least - squares method. it was found that the curve of dispersion model fitted the experimental rtd curve well
本文利用一維軸向擴散模型對降液管中液體流動進行了數學描述，用時間域最小二乘法擬合了模型參數，模型方程所作曲線與rtd曲線吻合較好。In this method of measuring temperature, when the measuring results of time - resolved spectrum have been completed, computing the fit spectrum of corresponding planck bold - radiation with least duple multiply theory, the temperature is measured
溫度擬合方法的主要思想：獲得光譜的時間分辨測量結果后，用最小二乘法原理計算熱輻射譜（主要在可見光區）擬合得到相應普朗克黑體輻射加線，並解析其溫度。Analysis of ejector performance using dimensionless parameters
在用偏最小二乘法In the stage of the sun and the moon in sight, azimuth of the sun, the earth and the moon in the spacecraft body coordinate system is simulated. combining the simulated azimuth with the ephemeris of the sun and the moon, the state equation and observation equation are modeled. the initial orbital parameters calculated by least square method are used in orbit state equation to predict spacecraft state and to realize autonomous navigation
在日月可見階段，模擬日、地、月敏感器測量信息，即日、地、月在航天器本體坐標系下的方位信息，結合日月星歷，建立狀態方程及觀測方程，通過最小二乘法得到歷元時刻的軌道狀態初始值，將其代入軌道狀態方程進行自主導航。A rate - dependent damage evolution modified zwt nonlinear constitutive ralation is adopted, an object function of least square was established according to the experimental results. the searching space of each decision variable was foreordained with conventional optimizing method, and all parameters in zwt model for solidified pf resin were determined with generic algorithms
基於實驗曲線構建了最小二乘形式的目標函數，並採用傳統優化方法輔助設計了各個決策變量的搜索空間，進而用遺傳演算法確定了損傷型zwt非線性粘彈性本構關系中的材料參數。The result of experiment validated the mathematical models and simulation methods. on the basis of theoretical models and experimental data, the least square technique was used to identify the indeterminable parameters in torque motor and parameters of magnetic fluid
在理論模型和實驗數據的基礎上，用最小二乘參數辨識的方法對力矩馬達中的不確定參數及磁流體參數進行辨識，從而對添加磁流體的力矩馬達進行了實驗建模。Petrov - galerkin least squares mixed element method for the stationary incompressible magnetohydrodynamics
最小二乘混合元方法For a set of gasoline samples, multivariate linear regression ( mlr ) and partial least squares ( pls ) calibration models are built to predict research octane number ( ron )
針對一批實際生產裝置的汽油樣品，採用近紅外光譜定量分析中常用的多元線性回歸（ mlr ）與偏最小二乘（ pls ）方法，建立了汽油研究法辛烷值nir光譜預測模型。Different algorithms were compared in the numerical simulation and model experiment of concrete velocity inversion the results showed that, compared with the least - square solutions and the damped least - square solutions, the damped and natural weighted least - square solutions reflected the inner defections of the tested object more reliably and exactly due to the usage of correct priori information, which benefited the suppression of noises and made the iterations of inverse stable and convergent
結果表明，相對于最小二乘法和阻尼最小二乘法，基於自然權的加權阻尼最小二乘演算法，由於利用了正確的先驗信息，不但使反演過程收斂，而且具有數值穩定、抗噪能力強的優點，其成像結果能真實有效地反映對象內部缺陷，因此更適用於混凝土的超聲波速度反演。Compared with straight ray tracing, inversion of bending ray tracing is better when data of test are accurate. on the other hand, natural weight is introduced and numerical simulations and experiments of wlm on inversion of velocity and attenuation are also made, which show that wlm, with resistance of noises and convergence of iteration, may get good re - construction images
本文引入了物理意義明確的自然權，對基於自然權的加權阻尼最小二乘反演演算法（ wlm ）在速度反演、衰減反演中進行了數值模擬和試驗研究，結果表明wlm均能獲得良好的重建圖像，迭代收斂，抗噪能力強。The laser radar sub - system determines the heights of the tsp according to the slant height and the oblique angle measured by the laser range finder and the electronic theodolite simultaneously. by lucubrating the motion law of tsp, we decided to compute decent velocities with least - squares procedure & two ranks curve fitting
地面激光雷達跟蹤測量分系統根據測量到的斜距離和俯仰角確定末敏彈傘彈系統的高度，在深入研究末敏彈穩態掃描過程的運動規律后，通過最小二乘法的二階分段曲線擬合，計算出落速。We discussed four common outlier tests in pls regression, included partial f test, residual plot and normal quantile plot, latent variables plot ( tit plot ), contribution plot of variables to latent variables. among these techniques, the first and second are used frequently in ordinal multiple multivariable regression
實例一的資料來自於衛生管理研究，主要用於偏最小二乘回歸與一般最小二乘回歸之間的優劣比較，以及偏最小二乘回歸離群點檢測方法的實際運用。分享友人