# Structure Discrimination in Block-Oriented Models Using Linear Approximations: A Theoretic Framework

arXiv: https://arxiv.org/abs/1804.09648 · HTML: https://mlsanity.com/paper/1804.09648/

## Key facts

- Cited by 1 papers in the map (data through 14 Oct 2026).
- First posted on arXiv 25 Apr 2018.

## Built on by (most cited first, 1 of 1)

- [Kernel-Based Sparse Additive Nonlinear Model Structure Detection through a Linearization Approach](https://mlsanity.com/paper/2508.01453/) (2025)

## Abstract (arXiv)

In this paper we show that it is possible to retrieve structural information about complex block-oriented nonlinear systems, starting from linear approximations of the nonlinear system around different setpoints.The key idea is to monitor the movements of the poles and zeros of the linearized models and to reduce the number of candidate models on the basis of these observations. Besides the well known open loop single branch Wiener-, Hammerstein-, and Wiener-Hammerstein systems, we also cover a number of more general structures like parallel (multi branch) Wiener-Hammerstein models, and closed loop block oriented models, including linear fractional representation (LFR) models.