Explanipedia

Predictive Control Strategies for Sustaining Innovation Adoption on Multilayer Social Networks Open

Martina Alutto, Hideaki Ishii · 2025

This paper studies an optimal control problem for an adoption-opinion model that couples innovation adoption with opinion formation on a multilayer network. Adoption spreads through social contagion and perceived benefits, while opinions e…

On the Limits of Robust Control Under Adversarial Disturbances Open

Paul Trodden, J. M. Maestre, Hideaki Ishii · 2025

This paper addresses a fundamental and important question in control: under what conditions does there fail to exist a robust control policy that keeps the state of a constrained linear system within a target set, despite bounded disturban…

Mitigation of Discrete‐Time SIS Networked Epidemics: A Local State Feedback Approach Open

Yuan Wang, Sebin Gracy, Hideaki Ishii, Karl Henrik Johansson · 2025

The paper deals with a discrete‐time susceptible‐infected susceptible (SIS) networked epidemic model. In the model, nodes represent populations and the network links possible transmission pathways of the disease between populations. Our ai…

A rolling horizon game considering network effect in cluster forming for dynamic resilient multiagent systems Open

Yurid Nugraha, Ahmet Cetinkaya, Tomohisa Hayakawa, Hideaki Ishii, Quanyan Zhu · 2025

Data-driven Quantized Control of Unknown Linear Systems with Uncertainties Open

Iori Takaki, Ahmet Cetinkaya, Hideaki Ishii · 2025

Distributed Parameter Estimation with Adversaries via Multi-Hop Relays Open

Liwei Yuan, Hideaki Ishii · 2025

Trade-off in Quantization Between Data-driven Design and Control Inputs Open

Iori Takaki, Ahmet Cetinkaya, Hideaki Ishii · 2025

Optimal Control of Epidemic Dynamics via Opinion Intervention in SIR Models Open

Qiulin Xu, Hideaki Ishii · 2025

Quantization Effects on Zero-Dynamics Attacks to Closed-Loop Sampled-Data Control Systems Open

Xile Kang, Hideaki Ishii · 2024

This paper focuses on cyber-security issues of networked control systems in closed-loop forms from the perspective of quantized sampled-data systems. Quantization of control inputs adds quantization error to the plant input, resulting in c…

Reaching Resilient Leader-Follower Consensus in Time-Varying Networks via Multi-Hop Relays Open

Liwei Yuan, Hideaki Ishii · 2024

We study resilient leader-follower consensus of multi-agent systems (MASs) in the presence of adversarial agents, where agents' communication is modeled by time-varying topologies. The objective is to develop distributed algorithms for the…

Long-Term Outcome Over 15 Years of Prosthesis for Thumb Carpometacarpal Joint Arthritis: A Case Series Open

Takanori Shintaku, Masanori Nakayama, Hideaki Ishii, Mitsuru Yagi, Hiroyasu Ikegami · 2024

This report presents the long-term (over 15 years) results of four Japanese patients who underwent total joint replacement for thumb carpometacarpal (CMC) joint arthritis. Four patients (mean age 60.5 years) underwent prosthesis replacemen…

On a Discrete-Time Networked SIV Epidemic Model With Polar Opinion Dynamics Open

Qiulin Xu, Hideaki Ishii · 2024

Resilient Average Consensus with Adversaries via Distributed Detection and Recovery Open

Liwei Yuan, Hideaki Ishii · 2024

We study the problem of resilient average consensus in multi-agent systems where some of the agents are subject to failures or attacks. The objective of resilient average consensus is for non-faulty/normal agents to converge to the average…

Secure Synchronization of Heterogeneous Pulse-Coupled Oscillators Open

Jiaqi Yan, Hideaki Ishii · 2024

In this paper, we consider the synchronization of heterogeneous pulse-coupled oscillators (PCOs), where some of the oscillators might be faulty or malicious. The oscillators interact through identical pulses at discrete instants and evolve…

Asynchronous Approximate Byzantine Consensus: A Multi-hop Relay Method and Tight Graph Conditions Open

Liwei Yuan, Hideaki Ishii · 2024

We study a multi-agent resilient consensus problem, where some agents are of the Byzantine type and try to prevent the normal ones from reaching consensus. In our setting, normal agents communicate with each other asynchronously over multi…

Residual Deformity of the Trochlea After Non-displaced Supracondylar Fracture in a Child: A Case Report Open

Hideaki Ishii, Takanori Shintaku, Shu Yoshizawa, Takahiro Maeda, Hiroyasu Ikegami · 2024

On a Discrete-Time Networked SIV Epidemic Model with Polar Opinion Dynamics Open

Qiulin Xu, Hideaki Ishii · 2024

This paper studies novel epidemic spreading problems influenced by opinion evolution in social networks, where the opinions reflect the public health concerns. A coupled bilayer network is proposed, where the epidemics spread over several …

Resilient Synchronization of Pulse-Coupled Oscillators Under Stealthy Attacks Open

Yugo Iori, Hideaki Ishii · 2024

This paper studies a clock synchronization problem for wireless sensor networks employing pulse-based communication when some of the nodes are faulty or even adversarial. The objective is to design resilient distributed algorithms for the …

Distributed Parameter Estimation with Gaussian Observation Noises in Time-varying Digraphs Open

Jiaqi Yan, Hideaki Ishii · 2023

In this paper, we consider the problem of distributed parameter estimation in sensor networks. Each sensor makes successive observations of an unknown $d$-dimensional parameter, which might be subject to Gaussian random noises. The sensors…

Erratum: Cooperative distributed state estimation: resilient topologies against smart spoofers Open

Mostafa Safi, Seyed Mehran Dibaji, Hideaki Ishii · 2023

A Framework for Distributed Estimation With Limited Information and Event-Based Communications Open

Jiaqi Yan, Yilin Mo, Hideaki Ishii · 2023

ISSN:0018-9286

Resilient Distributed Parameter Estimation in Sensor Networks Open

Jiaqi Yan, Kuo Li, Hideaki Ishii · 2023

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. Despite the presence of such misbehaviors, normally behavi…

Dynamic Quantized Consensus Under DoS Attacks: Towards a Tight Zooming-Out Factor Open

Shuai Feng, Maopeng Ran, Hideaki Ishii, Shengyuan Xu · 2023

This paper deals with dynamic quantized consensus of dynamical agents in a\ngeneral form under packet losses induced by Denial-of-Service (DoS) attacks.\nThe communication channel has limited bandwidth and hence the transmitted\nsignals ov…

Distributed Parameter Estimation under Gaussian Observation Noises Open

Jiaqi Yan, Hideaki Ishii · 2023

In this paper, we consider the problem of distributed parameter estimation in sensor networks. Each sensor makes successive observations of an unknown $d$-dimensional parameter, which might be subject to Gaussian random noises. They aim to…

Quantized Zero Dynamics Attacks against Sampled-data Control Systems Open

Kosuke Kimura, Hideaki Ishii · 2023

For networked control systems, cyber-security issues have gained much attention in recent years. In this paper, we consider the so-called zero dynamics attacks, which form an important class of false data injection attacks, with a special …

Cluster Forming of Multiagent Systems in Rolling Horizon Games with Non-uniform Horizons Open

Yurid Nugraha, Ahmet Cetinkaya, Tomohisa Hayakawa, Hideaki Ishii, Quanyan Zhu · 2023

Consensus and cluster forming of multiagent systems in the face of jamming attacks along with reactive recovery actions by a defender are discussed. The attacker is capable to disable some of the edges of the network with the objective to …

Special issue on control technology for networked and distributed robotics Open

Masaaki Nagahara, Kaiyong Cai, Debasish Chatterjee, Nikhil Chopra, Takeshi Hatanaka , et al. · 2023

"Special issue on control technology for networked and distributed robotics." Advanced Robotics, 37(1-2), p. 1

A Rolling Horizon Game Considering Network Effect in Cluster Forming for Dynamic Resilient Multiagent Systems Open

Yurid Nugraha, Ahmet Cetinkaya, Tomohisa Hayakawa, Hideaki Ishii, Quanyan Zhu · 2023

A two-player game-theoretic problem on resilient graphs in a multiagent consensus setting is formulated. An attacker is capable to disable some of the edges of the network with the objective to divide the agents into clusters by emitting j…

Distributed Parameter Estimation under Gaussian Observation Noises Open

Jiaqi Yan, Hideaki Ishii · 2023

In this paper, we consider the problem of distributed parameter estimation in sensor networks. Each sensor makes successive observations of an unknown d-dimensional parameter, which might be subject to Gaussian random noises. They aim to i…

Two-Player Incomplete Games of Resilient Multiagent Systems Open

Yurid Nugraha, Tomohisa Hayakawa, Hideaki Ishii, Ahmet Cetinkaya, Quanyan Zhu · 2023

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. In this paper we focus on a game-t…

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