TY - GEN
T1 - A Constructive Approach to Function Realization by Neural Stochastic Differential Equations
AU - Veeravalli, Tanya
AU - Raginsky, Maxim
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - The problem of function approximation by neural dynamical systems has typically been approached in a top-down manner: Any continuous function can be approximated to an arbitrary accuracy by a sufficiently complex model with a given architecture. This can lead to high-complexity controls which are impractical in applications. In this paper, we take the opposite, constructive approach: We impose various structural restrictions on system dynamics and consequently characterize the class of functions that can be realized by such a system. The systems are implemented as a cascade interconnection of a neural stochastic differential equation (Neural SDE), a deterministic dynamical system, and a readout map. Both probabilistic and geometric (Lie-theoretic) methods are used to characterize the classes of functions realized by such systems.
AB - The problem of function approximation by neural dynamical systems has typically been approached in a top-down manner: Any continuous function can be approximated to an arbitrary accuracy by a sufficiently complex model with a given architecture. This can lead to high-complexity controls which are impractical in applications. In this paper, we take the opposite, constructive approach: We impose various structural restrictions on system dynamics and consequently characterize the class of functions that can be realized by such a system. The systems are implemented as a cascade interconnection of a neural stochastic differential equation (Neural SDE), a deterministic dynamical system, and a readout map. Both probabilistic and geometric (Lie-theoretic) methods are used to characterize the classes of functions realized by such systems.
KW - geometric control theory
KW - neural dynamical systems
KW - stochastic differential equations
UR - http://www.scopus.com/inward/record.url?scp=85184828076&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85184828076&partnerID=8YFLogxK
U2 - 10.1109/CDC49753.2023.10383274
DO - 10.1109/CDC49753.2023.10383274
M3 - Conference contribution
AN - SCOPUS:85184828076
T3 - Proceedings of the IEEE Conference on Decision and Control
SP - 6364
EP - 6369
BT - 2023 62nd IEEE Conference on Decision and Control, CDC 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 62nd IEEE Conference on Decision and Control, CDC 2023
Y2 - 13 December 2023 through 15 December 2023
ER -