Search Results for author: Yat Tin Chow

Found 5 papers, 1 papers with code

State-Augmented Linear Games with Antagonistic Error for High-Dimensional, Nonlinear Hamilton-Jacobi Reachability

no code implementations25 Mar 2024 Will Sharpless, Yat Tin Chow, Sylvia Herbert

Namely, we show that with a representation of the true dynamics in the SA space, a series of inequalities confirms that the value of a SA linear game with antagonistic error is a conservative envelope of the true value function.

Conservative Linear Envelopes for Nonlinear, High-Dimensional, Hamilton-Jacobi Reachability

no code implementations21 Mar 2024 Will Sharpless, Yat Tin Chow, Sylvia Herbert

One may then solve the dimension-robust generalized Hopf formula for a linear game with this ``antagonistic error" to perform guaranteed conservative reachability analysis and control synthesis of nonlinear systems; this can be done for problem formulations in which no other HJR method is both computationally feasible and guaranteed.

Koopman-Hopf Hamilton-Jacobi Reachability and Control

2 code implementations21 Mar 2023 Will Sharpless, Nikhil Shinde, Matthew Kim, Yat Tin Chow, Sylvia Herbert

We find that it significantly out-competes expectation-minimizing and game-theoretic model predictive controllers with the same Koopman linearization in the presence of bounded stochastic disturbance.

A Direct Sampling Method for the Inversion of the Radon Transform

no code implementations21 Oct 2020 Yat Tin Chow, Fuqun Han, Jun Zou

We propose a novel direct sampling method (DSM) for the effective and stable inversion of the Radon transform.

Numerical Analysis Numerical Analysis 44A12, 65R32, 92C55, 94A08

Cyclic Coordinate Update Algorithms for Fixed-Point Problems: Analysis and Applications

no code implementations8 Nov 2016 Yat Tin Chow, Tianyu Wu, Wotao Yin

To this problem, we apply the coordinate-update algorithms, which update only one or a few components of $x$ at each step.

Optimization and Control Computation 90C06, 90C25, 65K05

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