Search Results for author: Kazumune Hashimoto

Found 11 papers, 2 papers with code

Probabilistic reachable sets of stochastic nonlinear systems with contextual uncertainties

no code implementations19 Mar 2024 Xun Shen, Ye Wang, Kazumune Hashimoto, Yuhu Wu, Sebastien Gros

The existing methods of computing probabilistic reachable sets normally assume that the uncertainties are independent of the state.

Density Estimation

Synthesis of Event-triggered Controllers for SIRS Epidemic Models

no code implementations14 Oct 2023 Lichen Ding, Kazumune Hashimoto, Shigemasa Takai

To synthesize the event-triggered controller, we leverage the notion of a symbolic model, which represents an abstracted expression of the transition system associated with the SIRS model under the event-triggered control strategy.

Bayesian Meta-Learning on Control Barrier Functions with Data from On-Board Sensors

no code implementations10 Aug 2023 Wataru Hashimoto, Kazumune Hashimoto, Akifumi Wachi, Xun Shen, Masako Kishida, Shigemasa Takai

The proposed scheme realizes efficient online synthesis of the controller as shown in the simulation study and provides probabilistic safety guarantees on the resulting controller.

Meta-Learning Navigate

STLCCP: An Efficient Convex Optimization-based Framework for Signal Temporal Logic Specifications

1 code implementation16 May 2023 Yoshinari Takayama, Kazumune Hashimoto, Toshiyuki Ohtsuka

Signal Temporal Logic (STL) is capable of expressing a broad range of temporal properties that controlled dynamical systems must satisfy.

Signal Temporal Logic Meets Convex-Concave Programming: A Structure-Exploiting SQP Algorithm for STL Specifications

1 code implementation4 Apr 2023 Yoshinari Takayama, Kazumune Hashimoto, Toshiyuki Ohtsuka

Our framework includes a new robustness decomposition method that decomposes the robustness function into a set of constraints, resulting in a form of difference of convex (DC) program that can be solved efficiently.

Neural Controller Synthesis for Signal Temporal Logic Specifications Using Encoder-Decoder Structured Networks

no code implementations10 Dec 2022 Wataru Hashimoto, Kazumune Hashimoto, Masako Kishida, Shigemasa Takai

In this paper, we propose a control synthesis method for signal temporal logic (STL) specifications with neural networks (NNs).

Decoder

A Lifting Approach to Learning-Based Self-Triggered Control with Gaussian Processes

no code implementations21 Feb 2022 Wang Zhijun, Kazumune Hashimoto, Wataru Hashimoto, Shigemasa Takai

This paper investigates the design of self-triggered control for networked control systems (NCS), where the dynamics of the plant is unknown apriori.

Gaussian Processes

STL2vec: Signal Temporal Logic Embeddings for Control Synthesis With Recurrent Neural Networks

no code implementations10 Sep 2021 Wataru Hashimoto, Kazumune Hashimoto, Shigemasa Takai

In this paper, a method for learning a recurrent neural network (RNN) controller that maximizes the robustness of signal temporal logic (STL) specifications is presented.

Collaborative rover-copter path planning and exploration with temporal logic specifications based on Bayesian update under uncertain environments

no code implementations20 Jul 2021 Kazumune Hashimoto, Natsuko Tsumagari, Toshimitsu Ushio

An exploration policy for the copter is then synthesized by employing the notion of an entropy that is evaluated based on the environmental beliefs of the atomic propositions, and a path that the rover intends to follow according to the optimal policy.

Learning-based Symbolic Abstractions for Nonlinear Control Systems

no code implementations4 Apr 2020 Kazumune Hashimoto, Adnane Saoud, Masako Kishida, Toshimitsu Ushio, Dimos Dimarogonas

Symbolic models or abstractions are known to be powerful tools for the control design of cyber-physical systems (CPSs) with logic specifications.

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