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As the modified style of conventional BP neural network,this paper uses the rule of minimizing total square error from initial time to current time as the performance function.
作为常规BP神经网络的改进型,提出以从最初时刻到当前时刻的误差的平方和最小作为性能指标函数。
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This paper presented a method for tracing the intersections of two implicit surfaces.the most obvious advantage of this method is: when tracing the intersections, it could quickly get the next tracing point by intersecting this square plane with the two implicit surfaces.
该方法最主要的优点是:在跟踪隐式曲面的交线时,在前一个跟踪交点已经求得的情况下,利用正方形与两个隐式曲面的交点,即可快速有效地求出下一个跟踪点,而不用涉及迭代收敛的判断。
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In this paper, the maximum likelihood algorithm with process and measurement noise for nonlinear continuous-discrete system given by Jategaonkar and Plaetschke is improved in two aspects: 1 to avoid the disadvantages of sensitivities computation by common finite-difference method, in which the perturbation sizes should be selected optionally, an improved finite-difference method with best perturbations, is presented. 2 to improve the numerical stability of Jategaonkar's algorithm, maximum likelihood algorithm with fast triangular square-root decomposition filter is given.
摘要对Jategaonkar等人给出的同时计及过程及观测噪声的非线性连续-离散系统的极大似然算法从两个方面进行了改进:1给出了计算灵敏度的最佳摄动有限差分算法,避免了普通有限差分法计算灵敏度矩阵时需人为选择参数摄动量大小而带来的缺点;2给出了具有快速三角化平方根滤波的极大似然算法,提高了原算法的数值稳定性。
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ABSTRACT This paper studies the static behavior of uniplanar X-and multiplanar XX-joints made of square hollow steel sections.
本文对方管结构的平面X型和空间XX型相贯节点进行了系统的理论和试验研究。
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This paper firstly proposed some clarity-evaluation-functions of out-of-focus blurred image,they are the sum of square of gray-level gradient vector module,the sum of Roberts-gradients,and the sum of Laplacian operator.
本文首次提出了用图像灰度梯度向量模方和、Roberts梯度和与拉普拉斯(8邻域微分)算子和作为由于离焦产生的模糊图像的评价函数。
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This paper firstly proposed some clarity- evaluation- functions of out- of- focus blurred image,they are the sum of square of gray- level gradient vector module,the sum of Roberts- gradients,and the sum of L apla- cian operator.
本文首次提出了用图像灰度梯度向量模方和、Roberts梯度和与拉普拉斯(8邻域微分)算子和作为由于离焦产生的模糊图像的评价函数。
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In this paper a two-dimension square model of convection heat transfer is adopted and Field Coordination Equation is verified by comparing the heat transfer efficiency of optimal velocity filed and other flow fields.
过增元11,2指出速度矢量与热流之间的夹角是影响对流换热整体性能的一个重要因素,并阐述了对流换热场协同的基本概念:对流换热强化要求速度场和温度场之间相互协同,即彼此存在着最为合理的空间分布。
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Taking the wineshop of the International Business Center of Chinese Light Industrial Good and Textiles Mall as the example, this paper introduces the construction process of pouring concrete into square steel tube column , and advances some suggestions on some key links in the construction.
以中国轻纺城国际商务中心酒店为例,介绍了方钢管柱内浇灌混凝土的施工过程,并对施工中的关键环节提出了建议。
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Taking the wineshop of the International Business Center of Chinese Light Industrial Good and Textiles Mall as the example, this paper introduces the construction process of pouring concrete into square steel tube column, and advances some suggestions on some key links in the construction.
科技情报开发与经济, 2007年 15期以中国轻纺城国际商务中心酒店为例,介绍了方钢管柱内浇灌混凝土的施工过程,并对施工中的关键环节提出了建议。
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On the basis of the definition of matrix traces , this paper discusses their characteristics at first and then according to the norm of the F of square matrix and Cauchy-Schwarz inequality gives how to prove the zero matrix, unsimilar matrix, number cloth matrix, column matrix idempotent matrix and non-equality matrix.
根据矩阵迹的定义,首先给出了矩阵迹的性质,然后依据方阵的F—范数定义Cauchy—Schwarz不等式,给出了零矩阵,不相似矩阵,数幂矩阵,列矩阵,幂等矩阵及矩阵不等式的证法。
- 推荐网络例句
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I didn't watch TV last night, because it .
昨晚我没有看电视,因为电视机坏了。
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Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.
今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。
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I'm running my simile to an extreme.
我比喻得过头了。