Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"reputation systems"”.
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Systematic Measurement of Centralized Online Reputation Systems
Background: Centralized online reputation systems, which collect users' opinions on products, transactions and events as reputation information then aggregate and publish it, have been widely adopted by Internet companies. These systems can help users build trust, reduce information asymmetry and …
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Understanding and defending against internet infrastructures supporting cybecrime operations
… cybercriminal infrastructures are Autonomous Systems (AS) reputation systems. Past research efforts have developed several AS reputation systems that monitor the traffic for illicit activities. Unfortunately, these systems have severe limitations; (1) they cannot distinguish between malicious …
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Trust Management for Complex Agent Groups
In Multi-agent Systems, there are complex problems that cannot be solved by a single agent. Therefore, agent groups are formed to deal with the problems more effectively. These groups can have various types, structures, and complex behaviours. Meanwhile, the openness characteristic of multi-agent …
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Essays on reputation
In the dissertation, we study the value of reputation in a market prone to adverse selection and also the incentives of the individuals in that market to participate in the reputation mechanism. Ever since [Akerlof, 1970], it is known that adverse selection can hinder trade. Reputation can be used …
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On Reputation and Data-centric Misbehavior Detection Mechanisms for VANET
… changing and moving in and out of range. Current reputation systems for VANET try to establish trust between entities, which might not be required for practical scenarios. Due to the ephemeral nature of VANET, reputation schemes for mobile ad hoc networks (MANETs) cannot be applied to VANET. In …
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On the Determinants of Generalised Trust: An Investigation of the Institution-Centred and Society-Centred Perspectives
… overall density of social ties, network-based reputation systems foster trusting behaviours with strangers. Evidence supports the validity of the Spillover effect, encouraging further research on the topic.
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Essays on Network Coalition, Online Price Signaling, and E-commerce Effects on Offline Stores
… and coalition formation, price signaling and reputation building on online platforms, and the effect of online business on offline stores. The first paper examines the conditions under which collusion may or may not occur among agents when a principal cannot directly punish or reward them, …
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Efficient and Robust Methods for Computing Trust in Multi-Agent Systems
In systems with multiple potentially deceptive agents, any single agent may have to assess the trustworthiness of other agents in order to decide with which agents to interact. To evaluate the trustworthiness of an agent in a multi-agent system, one often combines two types of trust information: …
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Public Interest Computing: a Pluralistic Design Language Foundation for Societal-Machine Alignment
The proliferation of algorithmic systems, including artificial intelligence (AI), in decision-making contexts necessitates a critical examination of their alignment with societal and environmental values. The reciprocal relationship between these norms and emerging AI technologies calls for a …
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Trust management schemes for peer-to-peer networks
… especially in P2P network security. For many P2P systems, including ad hoc networks and online markets, reputation systems have been considered as a solution for mitigating the affects of malicious peers. However, a sybil attack, wherein forging identities is performed to unfairly and arbitrarily …
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Adaptive trust and reputation system as a security service in group communications
… a number of vulnerabilities against trust and reputation systems, and proposes a threat model to predict attack behaviors. This work also considers scenarios in which multiple attacking agents actively and collaboratively attack the whole network as well as a specific individual node. The …
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Context-Aware Worker Selection For Efficient Quality Control In Crowdsourcing
… aggregation, worker selection, context-specific reputation systems, and multi-step workflows, suffer from fairly high time and budget overheads and from their dependency on prior knowledge about individual workers. In this thesis, we address this challenge by leveraging the similarity between …
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Essays on Regulations in Peer-To-Peer Markets
… by removing information asymmetry through reputation systems. Despite increasing efficiency in the markets of traditional goods and services, many P2P businesses and their markets face scourge from lawmakers because of two reasons. First, the P2P markets enable many users to operate where …
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FACTORS INFLUENCING CONSUMERS' TRUST PERCEPTIONS OF ONLINE PRODUCT REVIEWS: A STUDY OF THE TOURISM AND HOSPITALITY ONLINE PRODUCT REVIEW SYSTEMS
… terms such as online communities, feedback systems, peer reputation systems, or consumer generated media. Such systems provide a global platform for customers to share their experiences, and also rate service providers. WOM systems are burgeoning on the Internet for products such as music …
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Toward Autonomic Web Services Trust and Selection
Emerging standards in Web services enable the development of large-scale applications in open environments. In particular, they enable services to be dynamically bound. However, current techniques fail to address the critical problem of selecting the right service instances to bind. The right …
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Unsupervised intrusion detection for wireless sensor networks based on artificial intelligence techniques
… forth, the system of agents is coupled with a reputation system, in a way the output of an agent assigns lower reputation to the nodes where it detects adversarial activities and vice versa. It is further advocated to avoid any contact with low reputation nodes, which provides implicit response …