Searched for: subject%3A%22reputation%22
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Stokkink, Q.A. (author)
The digital world is evolving toward representing - and serving the interconnection of - natural persons. Instead of depending on the intrastructure of Big Tech companies and governments, users can cooperate and use their hardware to form public infrastructure. Instead of existing by virtue of a reference in some institution's database, users...
doctoral thesis 2024
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Blanco, Adrian Fuertes (author), Shi, Z. (author), Roy, Debraj (author), Zhao, Zhiming (author)
The emergence of blockchain technologies has created the possibility of transforming business processes in the form of immutable agreements called smart contracts. Smart contracts suffer from a major limitation; they cannot authenticate the trustworthiness of real-world data sources, creating the need for intermediaries called oracles....
conference paper 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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Yan, Hannah (author)
Since China's open door policy and with its rapid urbanisation process, modern China has been known as the “testing ground” for foreign architects, including Dutch architecture firms. The architecture practices that firms did in China have enriched their company portfolio as well as increased their international reputation. For years, being a...
master thesis 2022
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Stokkink, Q.A. (author), Ileri, Can Umut (author), Pouwelse, J.A. (author)
Web3 networks are emerging to replace centrally-governed networking infrastructure. The integrity of the shared public infrastructure of Web3 networks is guaranteed through data sharing between nodes. However, due to the unstructured and highly partitioned nature of Web3 networks, data sharing between nodes in different partitions is a...
conference paper 2022
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Nasrulin, B. (author), Ishmaev, G. (author), Pouwelse, J.A. (author)
Decentralized reputation schemes present a promising area of experimentation in blockchain applications. These solutions aim to overcome the shortcomings of simple monetary incentive mechanisms of naive tokenomics. However, there is a significant research gap regarding the limitations and benefits of such solutions. We formulate these trade-offs...
conference paper 2022
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Knops, Per (author)
In the Iterated Prisoner’s Dilemma players can take advantage of other players. This has no drawbacks for the player after that game, since it is assumed that the players have no memory. When reputation is introduced however, a single game of the Prisoner’s Dilemma can influence other games. In this paper research is done on how reputation can...
bachelor thesis 2021
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Stannat, A.W. (author), Ileri, Can Umut (author), Gijswijt, Dion (author), Pouwelse, J.A. (author)
In a multi-agent system where agents provide quantifiable work for each other on a voluntary basis, reputation mechanisms are incorporated to induce cooperation. Hereby agents assign their peers numerical scores based on their reported transaction histories. In such systems, adversaries can launch an attack by creating fake identities called...
conference paper 2021
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Stokkink, Q.A. (author), Stannat, A.W. (author), Pouwelse, J.A. (author)
Successful classification of good or bad behavior in the digital domain is limited to central governance, as can be seen with trading platforms, search engines and news feeds. We explore and consolidate existing work on decentralized reputation systems to form a common denominator for what makes a reputation system successful when applied...
conference paper 2020
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Otte, P.J. (author), de Vos, M.A. (author), Pouwelse, J.A. (author)
TrustChain is capable of creating trusted transactions among strangers without central control. This enables new areas of blockchain use with a focus on building trust between individuals. Our innovative approach offers scalability, openness and Sybil-resistance while replacing proof-of-work with a mechanism to establish the validity and...
journal article 2020
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Ratnasari Hidayat, A. (author), de Reuver, Mark (author)
Selling handmade and artistic goods online is challenging since buyers need to be able to assess product quality before purchase. This study aims to explore how control mechanisms aid the assessment of the product quality of handmade and artistic goods. We do so by extracting control mechanisms for e-marketplace platforms from existing...
conference paper 2020
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de Vos, M.A. (author), Olsthoorn, Mitchell (author), Pouwelse, J.A. (author)
Decentralized applications, also known as dApps, are the new paradigm for writing business-critical software. Recruiting developers with appropriate qualifications and skills for this activity is key, yet challenging. The main problem is that the portfolio of developers is usually scattered across centralized platforms like GitHub and LinkedIn,...
conference paper 2019
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Shi, Q. (author), Zhu, Jianbo (author), Hertogh, M.J.C.M. (author), Sheng, Zhaohan (author)
As one of the most important sustainability project management practices, prefabrication has been drawing increasing attention to project construction practitioners. However, due to the needs of high technology and large capital investment, there is a great challenge for suppliers to adopt prefabrication in mega project construction....
journal article 2018
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Alvarez, A. (author)
A great number of studies documented bidder merger losses around the merger announcement date. The majority of the determinants documented are considered rational, however, a great line of literature has increasingly focused on the effect of past stock prices on decision makers e.g. 52-week high. This implies that there is a notion of...
master thesis 2017
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Alfano, M.R. (author), Robinson, Brian (author)
Gossip is often serious business, not idle chitchat. Gossip allows those oppressed to privately name their oppressors as a warning to others. Of course, gossip can be in error. The speaker may be lying or merely have lacked sufficient evidence. Bias can also make those who hear the gossip more or less likely to believe the gossip. By...
journal article 2017
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Norberhuis, S.D. (author)
Peer-to-peer networks are often large, collaborative networks where peers can join openly. The essence of a collaborative, distributed system is that every node performs tasks for other nodes. The peers often help in singular interactions and without direct reciprocity. Malicious peers can abuse and freeride the public goods. The network without...
master thesis 2015
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Vervoorn, R.R.E. (author), Dekker, H.R.E. (author)
Rijkswaterstaat has recently stated that the use of GeoRM is obligatory for projects with major geotechnical risks. Underground construction of freeway's in high-profile areas, such as the business district Zuidas in Amsterdam or railway links in densely populated areas, always introduce major geotechnical risks. It is not uncommon for these...
conference paper 2015
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Spruit, E.J.F. (author)
Cyber-crime is a large problem for society. OftenA botnet is used to for cybercrime. An infected machine is infected with a bot, this bot communicates with its controller. Other machines are infected with the same bot, which communicates with the same controller. These infected machines together form a zombie army of machines: the botnet. It is...
master thesis 2014
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Gkorou, D. (author)
In online communities, users frequently interact with strangers in order to buy and sell products, watch videos, educating themselves, and playing games. Establishing trust among strangers is essential for the functionality of these communities but challenging, as well. Online reputation systems effectively establish trust among strangers by...
doctoral thesis 2014
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Baaij, R.J.R. (author)
Problem statement The Dutch food processing and packaging machinery industry (food systems industry) is a very important sector considering its benefits to Dutch economy. The sector has a total annual turnover of approximately 2 billion euro’s and furthermore provides employment to more than 8600 people (GMV, n.d.). This sector, and entire Agro...
master thesis 2014
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