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最优反演
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  optimal inversion
     The advantage and disadvantage of the two methods have been compared in theoretics and application. From the view of the freedom, we discussed the resolution of NMR relaxation inversion and the method for the selection of optimal inversion.
     从解的自由度的角度,讨论了解的分辨率,并给出了最优反演模型的选取原则:SVD算法适合于信噪比较高的核磁弛豫数据反演,变换反演算法灵活性较大,适应于较低信噪比的核磁弛豫数据反演。
短句来源
     Using the statistically optimal inversion method 50 sets of simulation microwave radiation data are retrieved. The influence of observational error on the inversion accuracy is discussed.
     运用统计最优反演方法对50组模拟的微波辐射资料进行了反演,并讨论了观测误差对反演精度的影响。
短句来源
  “最优反演”译为未确定词的双语例句
     ESTABLISHMENT OF THE OPTIMUM RETRIVAL EQUATION FOR ATMOSPHERIC REMOTE-SENSING BASED ON PRESS CRITERION AND RIDGE REGRESSION
     利用PRESS准则和岭回归方法建立大气遥感最优反演方程
短句来源
     [1] . has first introduced the PRESS criterion for the optimun subset in modern regression analysis to set up the optimum retrieval equation for atmospheric remote sensings. Furthermore the ridge regression analysis is used in the assessment of the optimum subsets obtained in terms of different different criteria of methods.
     在文献[1]的基础上,首次引用近传回归分析中PRESS准则最优子集法,建立大气温湿遥感最优反演方程,并用岭回归分析评价不同准则或方法所得到的最优子集,同时用实际资料进行了验证。
短句来源
     In this method,NN forward model provides gradient information of inversion error with respect to inputs. This gradient information is used by the inversion method to obtain an optimal result.
     该方法利用神经网络正向模型提供反演误差对输入的梯度信息,利用该梯度信息进行迭代得到最优反演结果。
短句来源
  相似匹配句对
     The Cooperative Optimization of the Signal-noise Ratio and the Resolution in Seismic Inverse
     地震反演中信噪比和分辨率的综合最优
短句来源
     Optimal estimation of parameters inversion for the relationship of permeability-saturation-pressure in water-air phase flow system
     水气两相流系统K-S-P模型参数反演最优估计
短句来源
     Broad-band constrained inversion
     宽带约束反演
短句来源
     Optimal Strategy of Fishing
     最优捕鱼策略
短句来源
     Optimal Fishing Strategy
     最优捕鱼策略
短句来源
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  optimal inversion
The Lagrange principle in the problem of optimal inversion of linear operators in finite-dimensional spaces with a priori inform
      
From the view of the degree of freedom of the inversion solution, we discussed the resolution of the solution of NMR relaxation inversion and the selection of optimal inversion modeling.
      
Optimal inversion time for acquiring flow-sensitive alternating inversion recovery images to quantify regional cerebral blood fl
      
We noted a wide variation in the optimal inversion times among patients.
      


The effect of earth's surface on the kernel functions for microwave remote sensing of the atmospheric temperature profiles is investigated. By means of the optimization technique a set of optimal kernels almost independent of the earth's property is obtained. Using the statistically optimal inversion method 50 sets of simulation microwave radiation data are retrieved. The influence of observational error on the inversion accuracy is discussed.

本文讨论了地表对微波测温核函数的影响,运用最优化技术,得到了一组基本上与地表特征无关的最优核。运用统计最优反演方法对50组模拟的微波辐射资料进行了反演,并讨论了观测误差对反演精度的影响。

On the basis of Ref.[1] .has first introduced the PRESS criterion for the optimun subset in modern regression analysis to set up the optimum retrieval equation for atmospheric remote sensings. Furthermore the ridge regression analysis is used in the assessment of the optimum subsets obtained in terms of different different criteria of methods. And the results are veri-fied by actual data.

在文献[1]的基础上,首次引用近传回归分析中PRESS准则最优子集法,建立大气温湿遥感最优反演方程,并用岭回归分析评价不同准则或方法所得到的最优子集,同时用实际资料进行了验证。

Back analysis of measured displacements has found application in rock engineering, structure detecting, biomechanical diagnosis, etc. The paper addresses the inverse formulation method and the direct formulation method for back analysis of measured displacements, and introduces two algorithmic programs based on the above two methods for identifying initial geostress parameters and rock modulus. Some distinctions of the two method, such as models of geostress, goal parameters, inverse algorithms, and so on, are...

Back analysis of measured displacements has found application in rock engineering, structure detecting, biomechanical diagnosis, etc. The paper addresses the inverse formulation method and the direct formulation method for back analysis of measured displacements, and introduces two algorithmic programs based on the above two methods for identifying initial geostress parameters and rock modulus. Some distinctions of the two method, such as models of geostress, goal parameters, inverse algorithms, and so on, are analyzed and the constrained variable metric algorithm for solving nonlinear programming is highlighted. The methods and programs are applied in construction forecast of rock mechanics. Inverse results of different degree of rationality and precision are achieved, and optimum parameters in a interval are found.

位移测量反演分析已应用于岩石工程、结构检测、生物力学诊断等领域。介绍了位移反演分析的逆定式化方法与正定式化方法,以及基于这两种方法的初始地应力与岩层介质模量识别的两个算法程序,对比分析了两者在地应力模型、目标参数、反演算法等几个方面区别,重点说明了约束变尺度法优化算法能较好地解决非线性规划问题。并应用于岩石力学施工预报,获得了不同合理性和精度的反分析结果,以及区间最优的反演参数。

 
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