no code implementations • 3 Mar 2025 • Qiulin Xu, Tatsuya Masada, Hideaki Ishii
This paper investigates the spread of infectious diseases within a networked community by integrating epidemic transmission and public opinion dynamics.
no code implementations • 18 Mar 2024 • Jiaqi Yan, Hideaki Ishii
Specifically, the normal oscillators can either detect the presence of malicious nodes or synchronize in both phases and frequencies.
no code implementations • 7 Nov 2023 • Jiaqi Yan, Hideaki Ishii
In this paper, we consider the problem of distributed parameter estimation in sensor networks.
no code implementations • 3 Jun 2023 • Jiaqi Yan, Kuo Li, Hideaki Ishii
In this paper, we study the problem of parameter estimation in a sensor network, where the measurements and updates of some sensors might be arbitrarily manipulated by adversaries.
no code implementations • 1 Jun 2023 • Shuai Feng, Maopeng Ran, Hideaki Ishii, Shengyuan Xu
This paper deals with dynamic quantized consensus of dynamical agents in a general form under packet losses induced by Denial-of-Service (DoS) attacks.
no code implementations • 21 Mar 2023 • Kosuke Kimura, Hideaki Ishii
We look at two approaches for generating quantized attacks which can keep the error in the output smaller than a specified level by using the knowledge of the system dynamics.
no code implementations • 21 Mar 2023 • Jiaqi Yan, Hideaki Ishii
To this end, we first generalize the so-called dynamic regressor extension and mixing (DREM) algorithm to stochastic systems, with which the problem of estimating a $d$-dimensional vector parameter is transformed to that of $d$ scalar ones: one for each of the unknown parameters.
no code implementations • 26 Jan 2023 • Yurid Nugraha, Ahmet Cetinkaya, Tomohisa Hayakawa, Hideaki Ishii, Quanyan Zhu
Consensus and cluster forming of multiagent systems in the face of jamming attacks along with reactive recovery actions by a defender are discussed.
no code implementations • 9 Jan 2023 • Yurid Nugraha, Ahmet Cetinkaya, Tomohisa Hayakawa, Hideaki Ishii, Quanyan Zhu
A two-player game-theoretic problem on resilient graphs in a multiagent consensus setting is formulated.
no code implementations • 3 Dec 2022 • Yurid Nugraha, Tomohisa Hayakawa, Hideaki Ishii, Ahmet Cetinkaya, Quanyan Zhu
Evolution of agents' dynamics of multiagent systems under consensus protocol in the face of jamming attacks is discussed, where centralized parties are able to influence the control signals of the agents.
no code implementations • 9 Oct 2022 • YuAn Wang, Sebin Gracy, César A. Uribe, Hideaki Ishii, Karl Henrik Johansson
The upshot of devising such a strategy is that it allows health administration officials to ensure that there is sufficient capacity in the healthcare system to treat the most severe cases.
no code implementations • 13 May 2022 • Jiaqi Yan, Yilin Mo, Hideaki Ishii
We propose an event-based control protocol for achieving the synchronization among agents in the mean square sense and theoretically analyze the performance of it by using a stochastic Lyapunov function, where the stability of $c$-martingales is particularly developed to handle the challenges brought by the general model of noises and the event-triggering mechanism.
no code implementations • 7 Apr 2022 • Jiaqi Yan, Yilin Mo, Hideaki Ishii
This paper considers the problem of distributed estimation in a sensor network, where multiple sensors are deployed to infer the state of a linear time-invariant (LTI) Gaussian system.
no code implementations • 6 Apr 2022 • Rui Kato, Hideaki Ishii
Rigorous conditions for cluster synchronization of Kuramoto oscillators are presented.
no code implementations • 31 May 2021 • YuAn Wang, Sebin Gracy, Hideaki Ishii, Karl Henrik Johansson
This paper considers the susceptible-infected-susceptible (SIS) epidemic model with an underlying network structure among subpopulations and focuses on the effect of social distancing to regulate the epidemic level.
no code implementations • 9 Apr 2021 • Mingming Shi, Shuai Feng, Hideaki Ishii
This paper studies the resilient control of networked systems in the presence of cyber attacks.
no code implementations • 13 Jan 2021 • Liwei Yuan, Hideaki Ishii
We propose two distributed schemes for detection of malicious nodes and resilient consensus with different requirements on resources for communication and the structures of the networks.
no code implementations • 26 Dec 2020 • YuAn Wang, Hideaki Ishii, François Bonnet, Xavier Défago
Such a problem setting serves as a model of opinion dynamics in social networks where consensus is to be formed at the time of pandemic and infected individuals may deviate from their true opinions.
no code implementations • 24 Dec 2020 • Hiroki Matsume, YuAn Wang, Hideaki Ishii
The paper considers the problem of multi-agent consensus in the presence of adversarial agents which may try to prevent and introduce undesired influence on the coordination among the regular agents.
no code implementations • 28 Apr 2020 • Shuai Feng, Hideaki Ishii
In this paper, we study multi-agent consensus problems under Denial-of-Service (DoS) attacks with data rate constraints.
no code implementations • 30 Jul 2019 • Xin Wang, Hideaki Ishii, Linkang Du, Peng Cheng, Jiming Chen
With the proliferation of training data, distributed machine learning (DML) is becoming more competent for large-scale learning tasks.
no code implementations • 9 Apr 2019 • Song Fang, Mikael Skoglund, Karl Henrik Johansson, Hideaki Ishii, Quanyan Zhu
In this paper, we obtain generic bounds on the variances of estimation and prediction errors in time series analysis via an information-theoretic approach.