Search Results for author: Zahra Monfared

Found 7 papers, 4 papers with code

Transformation of ReLU-based recurrent neural networks from discrete-time to continuous-time

1 code implementation ICML 2020 Zahra Monfared, Daniel Durstewitz

On the other hand, mathematical analysis of dynamical systems inferred from data is often more convenient and enables additional insights if these are formulated in continuous time, i. e. as systems of ordinary (or partial) differential equations (ODE).

BIG-bench Machine Learning Numerical Integration +3

Out-of-Domain Generalization in Dynamical Systems Reconstruction

no code implementations28 Feb 2024 Niclas Göring, Florian Hess, Manuel Brenner, Zahra Monfared, Daniel Durstewitz

We explain why and how out-of-domain (OOD) generalization (OODG) in DSR profoundly differs from OODG considered elsewhere in machine learning.

Domain Generalization

Generalized Teacher Forcing for Learning Chaotic Dynamics

1 code implementation7 Jun 2023 Florian Hess, Zahra Monfared, Manuel Brenner, Daniel Durstewitz

Here we report that a surprisingly simple modification of teacher forcing leads to provably strictly all-time bounded gradients in training on chaotic systems, and, when paired with a simple architectural rearrangement of a tractable RNN design, piecewise-linear RNNs (PLRNNs), allows for faithful reconstruction in spaces of at most the dimensionality of the observed system.

Tractable Dendritic RNNs for Reconstructing Nonlinear Dynamical Systems

1 code implementation6 Jul 2022 Manuel Brenner, Florian Hess, Jonas M. Mikhaeil, Leonard Bereska, Zahra Monfared, Po-Chen Kuo, Daniel Durstewitz

In many scientific disciplines, we are interested in inferring the nonlinear dynamical system underlying a set of observed time series, a challenging task in the face of chaotic behavior and noise.

Time Series Time Series Analysis +1

On the difficulty of learning chaotic dynamics with RNNs

1 code implementation14 Oct 2021 Jonas M. Mikhaeil, Zahra Monfared, Daniel Durstewitz

Here we offer a comprehensive theoretical treatment of this problem by relating the loss gradients during RNN training to the Lyapunov spectrum of RNN-generated orbits.

Time Series Time Series Analysis

Tractable Dendritic RNNs for Identifying Unknown Nonlinear Dynamical Systems

no code implementations29 Sep 2021 Manuel Brenner, Leonard Bereska, Jonas Magdy Mikhaeil, Florian Hess, Zahra Monfared, Po-Chen Kuo, Daniel Durstewitz

In many scientific disciplines, we are interested in inferring the nonlinear dynamical system underlying a set of observed time series, a challenging task in the face of chaotic behavior and noise.

Time Series Time Series Analysis +1

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