从式2可以看出,SAR、MRSAR、SEM、SDM这些模型必须对待估计参数λ有限制,才能保证模型估计的协方差矩阵是半正定的(semi definite),即要求上式2中的Var(λ)>=0。(请注意:协方差矩阵的半正定性在计量回归中是必须成立的。) 此处补充一点:传统的非空间计量回归其实也无法保证协方差矩阵的半正定性。但是在空间计量...
网络半正定矩阵 网络释义 1. 半正定矩阵 ...itively definite matrix),半正定矩阵(positively semi-definite matrix),主子式(chief factor),顺序主子式(ordinal chief f… sl.qust.edu.cn|基于3个网页
网络复正半定矩阵 网络释义 1. 复正半定矩阵 半定矩阵,quasi... ... ) negative semidefinite matrix 负半定矩阵 )Complex positive semi definite matrix复正半定矩阵... www.dictall.com|基于 1 个网页
semi-definite matrix基本释义 半定阵专业释义 <数学> 半定矩阵词条提问 欢迎你对此术语进行提问>> 行业词表 石油纺织轻工业造纸采矿信息学农业冶金化学医学医药地理地质外贸建筑心理学数学机械核能汽车海事消防物理生物学电力电子金融财会证券法律管理经贸人名药名解剖学胚胎学生理学药学遗传学中医印刷商业商务大气科学天文...
ForestMatrixStabilityIn this paper, a class of nonlinear semi-discrete age-structured model of forest evolution system is discussed, by using the concept of critical proliferation rate and theory of matrix, we discussed the stability of linear and nonlinear forest system, and we obtain the ...
Positive semi-definite matrix constraints arise in a number of optimization problems in which some or all of the elements of a matrix are variables, such as the educational testing and matrix modification problems. The structure of such constraints is developed, including expressions for the normal ...
semi matrix 半矩阵 definite a. 1.清楚的; 明确的; 确切的 2.肯定; 有把握 positive a. 1.确定的;;确实的 2.确信的;有自信的(+of/about)(+that) 3.绝对的 4.积极的,建设性的 5.真实的;实际的;实在的 6.【口】完全的,纯粹的 7.【语 semi n. 【口】=semitrailer semi- pref. 【前缀】...
1) metapositive semi_definite matrix 次半正定矩阵1. The recurrence discrimination method of the metapositive semi_definite matrix is given,and the subcontract standard form of the metapositive semi_definite matrix is discussed. 给出了次半正定矩阵的递归判别法,讨论了次半正定矩阵的次合同标准形。
2) semipositive subdefinite matrix 亚半正定阵 1. The equal condition of semipositive subdefinite matrix and the necessary and sufficient conditions for the solvability of problem I are obtained,the expression of the general solution of problem I is also given. 亚半正定阵的等价条件与亚半正定...
4) Hermitian positive semi definite matrix Hermite正半定矩阵5) positive Hermitian matrix 正定Hermite阵6) Hermite positive semidefinite Hermite半正定 1. The complex matrix solutions with Hermite part positive semidefinite and Hermite positive semidefinite for the matrix equation(A*XA,B*XB)=(C,D...