1 citations · 1 across the 5 of their papers we have counts for
6 papers
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.
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…
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…
A Weighted Least-Squares Method for Non-Asymptotic Identification of Markov Parameters from Multiple Trajectories
Jiabao He, Cristian R. Rojas, Håkan Hjalmarsson
Markov parameters play a key role in system identification. There exists many algorithms where these parameters are estimated using least-squares in a first, pre-processing, step,…
Weighted Least-Squares PARSIM
Jiabao He, Cristian R. Rojas, Håkan Hjalmarsson
Subspace identification methods (SIMs) have proven very powerful for estimating linear state-space models. To overcome the deficiencies of classical SIMs, a significant number of a…
Finite Sample Analysis for a Class of Subspace Identification Methods
Jiabao He, Ingvar Ziemann, Cristian R. Rojas +1
While subspace identification methods (SIMs) are appealing due to their simple parameterization for MIMO systems and robust numerical realizations, a comprehensive statistical anal…