Identifiability ; causal effect ; ancillary information 可識別因果效應輔助信息
Equation method on the determination of identifiability for causal effect 判斷因果效應可識別的方程方法
Sufficiency and necessity for the identifiability of an important type of ancillary information in a causal model 一類重要輔助信息在一類因果模型中可識別的充要條件
Sufficiency and necessity for the identifiability of an important type of ancillary information in a causal model 一類重要輔助信息在一類因果模型中可識別的充要條件
Further , a new definition of identifiability of system model is given in the same sense , and an identifiability gramian matrix with application value is derived 進一步,將相應的結論應用到系統辨識問題上,給出可辨識性定義和具有實用價值的可辨識性判定定理。
According to equilibrium equations , geometric equations and constitutive equations , theoretical derivation of identifiability of back analysis was done when slope is in elastic state 論文還依據卒衡方程、幾何方程和物理方程,對處于彈性狀態的巖質邊坡反分析問題的可辨識性進行了理論推導。
To determined the configuration of excitation system model , the paper studies the identifiability of model , and proposes utilizing the relation among parameters for solving the problem of unidentifiability of model 摘要對于確定的勵磁系統模型結構,研究勵磁系統模型參數的可辨識性,提出利用參數之間存在的關系解決模型的不可辨識問題。
Secondly , the basic methods for parameter identification and the identifiability of parameter identification are dissertated . through the example of the problem of heat emission in one - dimensional infinite slab , the identifiability of thermodynamic parameter of concrete is proved theoretically 論述了參數辨識的基本方法和參數可辨識性的條件,以一維無限大平板的散熱問題為例,從理論上論證了混凝土熱力學參數可辨識性。
Furthermore , the dissertation researches the identifiability of the load by analyzing qualitatively the non - unique characteristic of the load parameter , and gives the numeric zone of the load parameters . the dissertation also investigates the view of the load model from different voltage levels 論文進一步研究了負荷模型的可辨識性,對負荷模型參數不惟一做了定性分析,研究了實際負荷模型的模型參數取值區間,和不同電壓等級電網的負荷模型折算問題。
2 . nonlinear source term identification problem about a quasilinear parabolic heat equation is investigated . for the given function determined , the existence and the uniqueness of the solution of the state equation are proved and the dependence of the solution of the state equation on the identification parameter is discussed ; then the identifiability is verified ; through choosing suitable basic functions , the above identification problem can be transformed into a constant coefficients identification problem ; and an practical iterative algorithm for solving the identification problem is presented , the feasibility and validity of the algorithm is verified by the numerical experiments 2 、研究一擬線性拋物型熱傳導方程非線性未知源項的識別問題;對于給定識別函數,論證了狀態方程解的存在惟一性、方程解與識別函數的依賴關系和可識別性;通過選取適當的基函數,把對非線性源項的識別轉化成常系數識別問題;給出了實現非線性源項識別的迭代算法,通過數值實驗證明了算法的有效性。
In statistics, identifiability is a property which a model must satisfy in order for inference to be possible. We say that the model is identifiable if it is theoretically possible to learn the true value of this model’s underlying parameter after obtaining an infinite number of observations from it.