查询词典 squares

On this basis,, Least-squares method is adopted to decompose the total current according to applied macro-field strength, and then the equivalent conductivity under AC and relative permittivity of nonlinear composite dielectric are obtained.

在此基础上，利用时域最小二乘法依据外加电场对总电流分解而获得非线性介质的交流等效电导率和相对介电常数。

It is proved that the sum of squared residual of data fitting using TLS is less than that using least squares method.

证明了全最小二乘法解对数据残差平方和小于一般二乘解得残差平方和。

Production function ; parameter estimation ; artificial fish school algorithm ; residual sum of squares

生产函数；参数估计；人工鱼群算法；残差平方和

The simulation studies are carried out for getting the accurate parameters of the production function. The simulation results show that this algorithm has fast optimization speed and which possesses minimum regression residual sum of squares.

以美国马萨诸塞州1820－1926年的产值、资金投入和劳动力投入数据做仿真实验，结果表明，该算法在生产函数参数估计中具有寻优速度快的特点﹐且可得到最小的回归残差平方和。

To examine this relationship on a finer scale, a residual sum of squares analysis was also run to determine whether the two structures suggested different mean lengths at age for one population.

为了研究这种关系的精密范围，利用残差和分析来判断一种种群同一年龄两种结构能推出不同的体长平均值。

In order to overcome the problem that the determination of non-scale interval definite and fractal dimension's computation were affected by human factors, the new method of scale transformation was presented according to the principles of notable regression effect, the smallest residual sum of squares and weak autocorrelation of residual error, which providing reference for the determination of study scale.

本文针对分形理论在描述监测站网分布时易受人为因素影响问题，提出了以回归效果显著，残差平方和最小和残差自相关性小为原则的确定尺度转折点的方法和基于GIS技术的点状数据确定尺度转折点的基本步骤，以期为研究尺度的科学确定提供参考。

The 3D-curves were shown for different factors,root mean square errors of cross validation,and prediction residual sum of squares.Analysis results ...

实验结果表明：校正模型的预测精度在5 452~12 285 cm-1波段范围内，最佳主因子数为7时，雪青梨总酸的预测精度最好，其预测集的相关系数达到了0.79，预测标准偏差为

Model structure is determined according to the principle of minimizing residual sum of squares, model parameters are estimated by optimum instrumental variable method and prediction error method and validation of the model is performed by examining the whiteness of model residuals.

采用最小二乘法估计制动器ARX模型的参数，以损失函数最小为优化准则，判断了制动器模型的阶次。运用最优辅助变量法和预报误差法，对制动器ARMAX模型的参数进行了估计。

Moreover,the residual sum of squares in least-square principle is introduced into the fitness function to enhance the fitting precision of the sensor p...

实验结果表明，该方案应用于土壤信息采集系统，不仅可以达到比粒子群优化(Particle swarm optimization，简称PSO)算法和量子粒子群优化(Quantum-behaved particle swarm optimization，简称QPSO)算法更好的寻优结果，而且具有比遗传算法更理想的位置拟合精度，是一种有效可行的传感器配置方法。

A new method for estimating parameters is proposed due to the characteristics of artificial fish school algorithm such as overcoming the local optimal value and robustness. Firstly, the parameters of production function are constructed into the artificial fish and residual sum of squares is designed into the function of food consistence, secondly, the parameters of production function are estimated by the random behavior, preying behavior, swarming behavior and following behavior.

基于人工鱼群算法能够克服局部极值、鲁棒性强等特点，给出了一种生产函数中参数估计的通用新方法，该方法首先将生产函数模型中的参数构造成人工鱼模型，利用残差平方和设计食物浓度函数，然后通过人工鱼的随机、觅食、聚群、追尾等行为，对生产函数中的参数进行估计。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。