关键词 : 井眼轨迹 ; 误差椭球 ; 可视化 [gap=960]Key words: well trajectory; error ellipsoid; visualization
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In this paper, Union Entropy is introduced while new error indexes, entropy error ellipse and entropy error ellipsoid are presented.
本文引入信息论中联合熵的概念 ,提出了二维随机点的熵误差椭圆指标与三维随机点的熵误差椭球指标。
参考来源 - 点位不确定性熵指标的确定·2,447,543篇论文数据，部分数据来源于NoteExpress
本文给出了线性模型中椭球约束下，误差方差非负二次估计可容许的一个必要条件。
This paper gives a necessary condition for the admissibility of a nonnegative, quadratic estimator for error variance in linear model with respect to restricted ellipsoidal parameter space.
实验方法的精确性，先用惯性参数已知的椭球体检验之，误差约在2%左右。
The accuracy of the experimental method was first checked by using ellipsoids, the inertia parameters of which were known, the error being about 2%. Then.
文中给出并证明了在椭球约束条件下线性模型中，误差方差的非负二次估计的可容许性问题的一个必要条件。
The paper raises and proves an essential condition of volumetric property of nonnegative secondary estimation of deviation and variance in linear model.
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