positive definiteness 中文意思是什麼
positive definiteness
解釋
正定性- positive : adj 1 確實的，明確的；確定的；無條件的 （opp qualified implied inferential）; 絕對的，無疑問的，...
- definiteness : 定指
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On the positive definiteness of the product of matrices
乘積的不等式的討論 -
A criterion for the positive definiteness of a block - matrix and its application
分塊矩陣的正定性準則及其應用 -
There have developed some technique to ensure the positive definiteness of the hessian of the quadratic objective function
迄今為止，已提出了多種保證子問題的目標函數的hessian陣的正定性的方案。 -
Point to above problems, under the financial support of the national natural science foundation ( exploration of high tech and new concept and new conceive ), the excellent young teachers program of ministry of education and national excellent doctoral dissertation special foundation, the static and dynamic real - time computation of elasticity - plastic mechanics, solving method of fuzzy finite element and other problems were studied in this paper. and some achievement was gained as following : ( 1 ) based on the positive definiteness of system stiffness matrix of finite element that was modified and the form of potential energy function of elastic body, the linear system of saturation mode ( lssm ) was introduced into the neural computation of finite element, by which the no - error solving of finite element neural net computation was realized in theory
針對上述問題，在國家自然科學基金（高技術新概念新構思探索） 、教育部優秀青年教師資助計劃、高等學校全國100篇優秀博士學位論文作者專項基金等的資助下，本文對彈塑性力學問題的動靜態的實時計算、模糊有限元的求解方法等問題進行了系統和深入的研究，取得了以下成果： （ 1 ）根據有限元總剛矩陣經修正後具有正定性的特點以及彈性體勢能函數的具體形式，將飽和模式的線性系統（簡稱為lssm系統）引入到有限元的神經網路計算中，在理論上實現了有限元神經網路計算的無誤差求解。 -
Although there have been some suggestions on how to ensure the positive definiteness of the iterative matrices, they are restrictive and is not easy to be implemented
盡管已有一些關于怎樣保證迭代矩陣正定的討論，然而還沒有切實可行的方案。 -
In order to improve the performance of ekf and ukf, the square soot unscented kalman filter ( sr - ukf ) with multiplicative noise is firstly investigated. considering the satellite nonlinear model, the sr - ukf attitude estimator is derived for gyroless satellite attitude estimation to render the state covariance with positive semi - definiteness and exceptional estimation accuracy
對于姿態估計，採用了rao - blackwellization技術將衛星模型狀態向量中的線性狀態部分（陀螺偏差）和非線性狀態部分（衛星姿態）分開處理，線性部分狀態可以由卡爾曼濾波（ kf ）估計得到，非線性部
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