Zijin Mining Group admits responsibility for river contaminations and accepts penalties Following two leakages of acidic copper solution from its copper and gold mine facilities into the Tingjiang
In this paper,we study spatial cross-sectional data models in the form of matrix exponential spatial specification(MESS),where MESS appears in both dependent and error terms.The empirical likelihood(EL)ratio statistic...In this paper,we study spatial cross-sectional data models in the form of matrix exponential spatial specification(MESS),where MESS appears in both dependent and error terms.The empirical likelihood(EL)ratio statistics are established for the parameters of the MESS model.It is shown that the limiting distributions of EL ratio statistics follow chi-square distributions,which are used to construct the confidence regions of model parameters.Simulation experiments are conducted to compare the performances of confidence regions based on EL method and normal approximation method.展开更多
本文介绍了用于多级教育发展规划的决策支持系统MESS(Multi-LevelEducational-Programing Support System)。文中结合人工智能中的知识描述方法,将教育规划中各级教育部门的层次结构、各种辅助决策模型以及决策人的经验、偏好等表达为...本文介绍了用于多级教育发展规划的决策支持系统MESS(Multi-LevelEducational-Programing Support System)。文中结合人工智能中的知识描述方法,将教育规划中各级教育部门的层次结构、各种辅助决策模型以及决策人的经验、偏好等表达为逻辑结构(事实和规则)的形式,并在此基础上进行决策问题求解路径的搜索及问题求题。展开更多
文摘Zijin Mining Group admits responsibility for river contaminations and accepts penalties Following two leakages of acidic copper solution from its copper and gold mine facilities into the Tingjiang
基金Supported by the National Natural Science Foundation of China(12061017,12161009)the Research Fund of Guangxi Key Lab of Multi-source Information Mining&Security(22-A-01-01)。
文摘In this paper,we study spatial cross-sectional data models in the form of matrix exponential spatial specification(MESS),where MESS appears in both dependent and error terms.The empirical likelihood(EL)ratio statistics are established for the parameters of the MESS model.It is shown that the limiting distributions of EL ratio statistics follow chi-square distributions,which are used to construct the confidence regions of model parameters.Simulation experiments are conducted to compare the performances of confidence regions based on EL method and normal approximation method.
文摘本文介绍了用于多级教育发展规划的决策支持系统MESS(Multi-LevelEducational-Programing Support System)。文中结合人工智能中的知识描述方法,将教育规划中各级教育部门的层次结构、各种辅助决策模型以及决策人的经验、偏好等表达为逻辑结构(事实和规则)的形式,并在此基础上进行决策问题求解路径的搜索及问题求题。
