An Interval Combination Forecasting Model of Minimizing Maximum Absolute Error 最大误差绝对值达到最小的区间组合预测模型
The Recursive Identification Algorithm of the Minimum Absolute Error Sum Regression 最小绝对误差和回归的递推辨识算法
Application of Support Vector Machine Regression Algorithm in Robot Absolute Error Compensation 支持向量机回归算法在机器人误差补偿中的应用研究
The method shows good accuracy and precision as the standardized error is less than 2%, while the absolute error to the column chromatograph result is less than 3%. 方法标准偏差小于2%,与柱色谱法所得结果之间的绝对偏差小于3%,具有良好的精密度和准确度。
In comparision with the traditional gray method and the combination forecasting method, the gray-neural network combinatorial model obviously improves the forecasting accuracy, reduces the mean absolute error and the average relative error between actual load values and forecasting values. 通过将传统灰色预测方法与组合预测方法比较,表明灰色&神经网络预测方法使预测精度得到了明显的提高,降低了实际负荷值和预测值之间的平均绝对误差和平均相对误差。
The longitudinal mean absolute error is 0.08 mm approximately. 纵向平均绝对误差约为0.08mm。
This equipment is based on the principle of double grating interferometer, one is simulated by computer and analysed in theory. The test shows the absolute error of this equipment is 0.019 μ m. 基于双光栅干涉仪原理,设计了一种数字式位移传感器,对该装置进行了理论分析和计算机模拟,实验验证:该测量装置的绝对误差不大于0.019μm。
Gives a calculation formula of the absolute error of specific frictional head losses. 给出了湍流区沿程阻力系数绝对误差的计算式。
The average absolute error is 2.29% based on 119 hydrocarbon compounds. 计算了119个烃类化合物的临界温度,总百分误差为2.29%。
The dB absolute error and dB relative error in electronic measurers are introduced. 介绍了电子测量仪器中的分贝绝对误差,分贝相对误差;
Using the prediction model, the ( average) fitting absolute error of the wind velocity is 1.80m/s for the historical samples, and the average predictive absolute error is 1.46m/s for the independent samples. 该预报方法所构造的预报模型对历史样本风速拟合平均绝对误差为1.80m/s,对独立样本风速试报的平均绝对误差为1.46m/s。
This paper presents that a linear weighted average is used to calculate initial soil temperature. Compared calculated values with experimental results, absolute error is 0.136C, and relative error is 0.69%. 介绍了线性加权和法确定土壤的初始地温,与实测值相比,绝对误差为0.136℃,相对误差为0.69%。
A correct configuration of extensometer in electronic universal testing machine is discussed as regards of extensometer structure, gauge length and measuring range, nominal measuring scale, output sensibility, absolute error of indicated value as well as strain error in the paper. 从引伸计的结构、标距和测量范围、标称量程与输出灵敏度、示值的绝对误差和应变误差等几个方面论述电子万能试验机引伸计的正确配置。
Based on the least square principle, an extended SCGM ( 1,1)_ ( a0) model is set up considering the absolute error in an ideal state. Its computation method is also presented. 基于最小二乘原理,考虑理想状态下的绝对误差建立了一种拓广的SCGM(1,1)a0模型,并给出了计算方法。
Using central limit theorem, absolute error and confidence level of risk probability are provided according to simulation running times. 最后,采用中心极限定理,依据模拟的次数,给出截流风险率估计值的绝对误差和置信度。
By numerical simulation, this paper gives the data windows of time response, the absolute error and the effects of harmonics. 通过数值仿真,分析了本改进方法的时间响应数据窗、绝对误差和谐波对本方法的影响。
The realization of minimum mean absolute error estimator in parameter estimation 参数估计中最小绝对值误差估计器的实现
The resolution rate of QRS complex was 99.48% both with relative index and absolute error index. 相关评价指标和绝对误差指标联合应用对QRS波群分辨率高达99.48%。
It has been proved that this algorithm is better than these former algorithms through the contrast of image impersonality criterion ( peak signal to noise ratio, normalized mean square error, normalized mean absolute error). 通过对滤波后图像的一些客观指标(峰值信噪比、归一化均方误差、归一化平均绝对误差)的比较,证明本文算法优于以前的改进算法。
We investigate the overall and the specific error characteristics through two error functions: normalized mean square error function ( NEF) and absolute error function ( AEF), respectively. 通过建立两个误差评价函数&归一化均方误差函数(NEF)和绝对误差函数(AEF),分别对整体和具体的近似误差进行了分析。
For the out-sample forecasting, we use the mean absolute error ( MAE) and root mean square error ( RMSE) to measure and compare, the results show that: the prediction model we use established by the four factors is reasonable and effective. 对于样本外的预测,我们分别使用平均绝对误差(MAE)和均方根误差(RMSE)进行度量比较,结果表明:我们使用四个因子所建立的预测模型是合理、有效的。
Static experiment results demonstrate that the maximum absolute error of void fraction measurement is 6.0%. 4. 静态试验表明,该方法测量空隙率的最大绝对误差为6.0%。
Based on ITAE norm, the integrated time and absolute error of all generators speed in power system is taken as the objective function, so it can reduce the difficulty in modeling as well as consider power system nonlinear parts influence on its dynamic performance. 本文根据系统质量指标ITAE准则,以系统所有发电机转速偏差同时间的乘积作时间积分作为PSS参数优化问题的目标函数,在降低建模难度的同时,考虑了系统非线性部分对系统动态性能的影响。
Experimental results show that the algorithm is better in the mean absolute error against traditional algorithm and the Slope One algorithm. 实验结果表明,本算法较之传统推荐算法和SlopeOne算法在平均绝对误差值上有一定的提高,证明了本算法的可行性与有效性。
Then, on the simulated images the thesis uses absolute error and relative error calculation method. Compared with the least squares algorithm, the presented using L1 norm measure has small error. 同时,论文利用绝对误差和相对误差的计算方式,在模拟图像上,比较了本文算法采用的L1模度量和最小二乘算法,分析表明采用的L1模度量算法误差较小。