3 papers
eess.SY2025
Finite Sample Analysis of Open-loop Subspace Identification Methods
Jiabao He, Ingvar Ziemann, Cristian R. Rojas +2
Subspace identification methods (SIMs) are known for their simple parameterization for MIMO systems and robust numerical properties. However, a comprehensive statistical analysis o…
math.FA2025
A Simple Proof of Nehari's Theorem Based on Duality
Cristian R. Rojas
In this technical note we provide a simple proof of Nehari's theorem on the optimal approximation by functions, based on convex duality.
eess.SY2025
Range Space or Null Space: Least-Squares Methods for the Realization Problem
Jiabao He, Yueyue Xu, Yue Ju +2
This contribution revisits the classical approximate realization problem, which involves determining matrices of a state-space model based on estimates of a truncated series of Mar…