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Li, Qiongxiu (author), Gundersen, Jaron Skovsted (author), Lopuhaa-Zwakenberg, Milan (author), Heusdens, R. (author)Privacy-preserving distributed average consensus has received significant attention recently due to its wide applicability. Based on the achieved performances, existing approaches can be broadly classified into perfect accuracy-prioritized approaches such as secure multiparty computation (SMPC), and worst-case privacy-prioritized approaches...journal article 2024
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Yue, Dongdong (author), Baldi, S. (author), Cao, Jinde (author), De Schutter, B.H.K. (author)This article describes an extension of the well-known model reference adaptive control (MRAC) approach. The extension relies on explicitly involving the tracking error in the feedback control law: it is shown that including this term along with its appropriate extra adaptive gain allows one to handle possibly unstable reference dynamics....journal article 2024
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Guillet, Victor (author)This research addresses the process of task allocation in a heterogeneous multi-agent fleet through the introduction of a novel mechanism in existing decentralised consensus algorithms: bid intercession. Bid intercession refers to the principle of agents biding on behalf of other agents in decision-making architectures leveraging market-based...master thesis 2023
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Foroughi, M. (author)This PhD thesis explores the evolving field of heritage planning, focusing on the cultural significance of heritage properties. It advocates for a value-based approach that recognizes the diverse perspectives of stakeholders, including experts, policymakers, and users. While participatory heritage aims to foster consensus-building, tensions may...doctoral thesis 2023
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Jamadar, Zeeshan (author)Anthropogenic climate change has led to irreversible Sea level rise (SLR), underscoring the urgency to implement adaptation measures. With there being a series of challenges to implement SLR adaptation, international standardisation emerges out to be a solution to address these challenges. In this research, an attempt is made to identify SLR...master thesis 2023
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Zhou, Yanzhuo (author)Byzantine consensus protocols are designed to build resilient systems to achieve consensus under Byzantine settings, maintaining safety guarantees under any network synchrony model and providing liveness in partially or fully synchronous networks.<br/>However, several Byzantine consensus protocols have been shown to violate liveness properties...master thesis 2023
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Priambodo, Bagas Ihsan (author)As demand for clean and renewable energy around the world increases, solar photovoltaic (PV) technology becomes substantially popular, especially in low-voltage (LV) distribution networks. However, the integration of PV in LV distribution networks requires careful planning as it introduces voltage violations. To maintain network voltage,...master thesis 2023
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Bouma, Johan (author)This paper explores different participation methods that could be applied in redeveloping religious heritage. Due to secularisation, religious buildings are threatened with vacancy. Churches in particular are difficult to redevelop due to their ecclesiastical and social values. Active community involvement assists in overcoming the gap in...master thesis 2023
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Winter, Levin N. (author)The testing of consensus systems has received growing attention and recent testing tools generate many faulty executions. However, there is a lack of methods that automatically analyze these outputs to identify the root causes of the bugs they found.<br/>This paper presents Isolation, a statistical bug isolation algorithm that uses message-based...bachelor thesis 2023
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Li, Wenkai (author)Concurrency bugs are easy to introduce but dif- ficult to detect, especially in implementations of distributed algorithms where concurrency non- determinism is an inherent problem. These bugs may only be identified under very specific order- ings of execution events, making them challenging to reproduce. Controlled concurrency testing tech-...bachelor thesis 2023
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Petrov, Martin (author)Consensus algorithms, as well as distributed systems in general, are vulnerable to concurrency bugs due to non-determinism. Such bugs are hard to detect since it is necessary to test using a lot of different scenarios and even then, there is no guarantee to find one. <br/><br/>Controlled concurrency testing is a proposed solution to that problem...bachelor thesis 2023
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Zwetsloot, Eva (author)In multi-agent systems reaching consensus has been a long-standing problem. A considerable amount of research has been focused on how event-triggered consensus can be used to limit the energy consumption of the communication system while still ensuring convergence to the neighbourhood of a point or a formation. These algorithms rely on having...master thesis 2023
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Couwenberg, Ruben (author)The Internet of Things (IoT) consists out of billions of devices. This vast size magnifies the security and efficiency challenges the IoT faces. Blockchain (BC) features like decentralisation, immutability and smart contracts can negate these IoT challenges. <br/>In this paper we discuss how BC based solutions can significantly increase the...bachelor thesis 2023
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Winter, Levin N. (author), Buşe, Florena (author), de Graaf, Daan (author), von Gleissenthall, Klaus (author), Kulahcioglu Ozkan, Burcu (author)Byzantine fault-tolerant algorithms promise agreement on a correct value, even if a subset of processes can deviate from the algorithm arbitrarily. While these algorithms provide strong guarantees in theory, in practice, protocol bugs and implementation mistakes may still cause them to go wrong. This paper introduces ByzzFuzz, a simple yet...journal article 2023
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Wang, Shimin (author), Zhang, Hongwei (author), Baldi, S. (author), Zhong, Renxin (author)This article studies the leaderless consensus problem of heterogeneous multiple networked Euler-Lagrange systems subject to persistent disturbances with unknown constant biases, amplitudes, initial phases, and frequencies. The main characteristic of this study is that none of the agents has information of a common reference model or of a...journal article 2023
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Sibeijn, M.W. (author), Pequito, S. (author)Proper monitoring of large complex spatially critical infrastructures often requires a sensor network capable of inferring the state of the system. Such networks enable the design of distributed estimators considering only local (partial) measurements, local communication capabilities with nearby sensors, as well as the system model....journal article 2023
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Yue, Dongdong (author), Baldi, S. (author), Cao, Jinde (author)We revisit distributed sampled-data consensus problems from a scalability point of view. Existing solutions in the literature for estimating the maximum sampling interval that preserves stability rely on the Lyapunov functional method. With this method, the overall closed-loop system (i.e. the overall network of agents) is treated as a time...journal article 2023
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Tian, Yongding (author), Guo, Zhuoran (author), Zhang, Jiaxuan (author), Al-Ars, Z. (author)Many researchers have proposed replacing the aggregation server in federated learning with a blockchain system to improve privacy, robustness, and scalability. In this approach, clients would upload their updated models to the blockchain ledger and use a smart contract to perform model averaging. However, the significant delay and limited...journal article 2023
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Decouchant, Jérémie (author), Kulahcioglu Ozkan, Burcu (author), Zhou, Yanzhuo (author)Byzantine consensus protocols aim at maintaining safety guarantees under any network synchrony model and at providing liveness in partially or fully synchronous networks. However, several Byzantine consensus protocols have been shown to violate liveness properties under certain scenarios. Existing testing methods for checking the liveness of...conference paper 2023
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Foroughi, M. (author), de Andrade, Bruno (author), Pereira Roders, A. (author), Wang, T. (author)Public participation has been growing in both theory and practice of urban planning, including heritage planning. The reasoning is to facilitate the involvement of a broader group of stakeholders, beyond experts. More specifically, for heritage planning, participation could enable consensus-building on defining the significance of heritage,...journal article 2023