Results 141 to 150 of about 1,082,543 (312)
Tensor network approximation of Koopman operators
We propose a tensor network framework for approximating the evolution of observables of measure-preserving ergodic systems. Our approach is based on a spectrally-convergent approximation of the skew-adjoint Koopman generator by a diagonalizable, skew-adjoint operator $W_τ$ that acts on a reproducing kernel Hilbert space $\mathcal H_τ$ with coalgebra ...
Giannakis, Dimitrios +5 more
openaire +2 more sources
Oxford Bulletin of Economics and Statistics, EarlyView.ABSTRACT We propose a multilevel econometric model with time‐varying spillover parameters that disentangle within‐country from between‐country growth spillovers. Parameter estimation is carried out by the method of maximum likelihood. The finite‐sample properties of the resulting estimates are validated through a Monte Carlo study.
F. Blasques +3 more
wiley +1 more source
Data-Driven Identification of Gas Turbine Engine Dynamics via Koopman Operator Genetic Algorithm
IEEE AccessGas turbine engines (GTEs) are highly nonlinear control-nonaffine systems. Deriving their physics-based models can be challenging, particularly when some critical parameters can be difficult to measure or determine otherwise.
David Grasev
doaj +1 more source
Sharp Spectral Rates for Koopman Operator Learning [PDF]
, 2023 Vladimir R. Kostic +3 more
openalex +1 more source
Deep Koopman Operator-based degradation modelling
Reliability Engineering & System SafetyWith the current trend of increasing complexity of industrial systems, the construction and monitoring of health indicators becomes even more challenging. Given that health indicators are commonly employed to predict the end of life, a crucial criterion for reliable health indicators is their capability to discern a degradation trend. However, trending
Sergei Garmaev, Olga Fink
openaire +2 more sources
The effects of perspective‐taking on multiple dimensions of discrimination: Can one size fit all?
Political Psychology, EarlyView.Abstract Perspective‐taking reduces discrimination, but research has taken a one‐size‐fits‐all approach, focusing on single attributes triggering discrimination, particularly ethnic origin, and has paid insufficient attention to heterogeneous treatment effects.
Carolin Rapp +4 more
wiley +1 more source
Problems and Solutions in the Knowledge Economy: Ideational Power in Slow‐Burning Crises
Regulation &Governance, EarlyView.ABSTRACT Societies are grappling with uncertainty about how to adapt to the emerging knowledge economy. Drawing on the public policy literature, we propose a new approach to studying the politics of ideas during long‐term structural changes. We depart from existing scholarship that focuses on the politics of ideas during episodic crises, and instead ...
Martin B. Carstensen +2 more
wiley +1 more source
Swiss Political Science Review, EarlyView.Abstract Switzerland's federal structure offers a unique context to examine how cantonal integration policies shape citizens' perceptions of migrants. While research has linked integration policies and citizens' attitudes, it often neglects subnational variation.
Cristina El Khoury
wiley +1 more source
Simulation and Dynamic Properties Analysis of the Anaerobic–Anoxic–Oxic Process in a Wastewater Treatment PLANT Based on Koopman Operator and Deep Learning [PDF]
, 2023 Wenchong Tian +6 more
openalex +1 more source
CAAI Transactions on Intelligence TechnologyAlthough previous studies have made some clear leap in learning latent dynamics from high‐dimensional representations, the performances in terms of accuracy and inference time of long‐term model prediction still need to be improved. In this study, a deep
Yongqian Xiao +4 more
doaj +1 more source