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P2P e-commerce systems are commonly perceived as an environment offering both opportunities and threats. The existence of malicious peers could damage the correctness and availability of them. One way to minimize such threats is to use trust model to evaluate the trustworthiness of peers. This paper presents a dynamic self-adaptive trust model for p2p e-commerce system - AdaptTrust model, which involves...
Trust is a very significant commodity in distributed networks the same as in social network. The dynamic and ephemeral nature of distributed networks environments is especially important to compute the peer trustworthy. So, the decision whether or not to trust a peer can depend on many contextual factors. We outline a context-based dynamics of trust for considering the impact of context information...
With the development of grid computing, economy models are invented and increasingly applied, however, that is under the assumption of both transaction parties are honest and trustworthy. In reality there is serious information asymmetry between the transaction participators. Information asymmetry may cause resource providers opportunistically exploit the information gap for resource consumers on...
Trust-based solutions provide some form of payment to peers to encourage good behavior. The problem with trust management systems is that they require prior knowledge to work. In other words, peers are vulnerable to attack if they do not have knowledge or correct knowledge of other peers in a trust management system. Therefore, considering only trust is inadequate when a decision is made to identify...
Educational resources is very rich, but the utilization rate is very low. There is a lot of redundancy and waste., To the whole education it would be a big step forward if We can integrate educational resources with the Internet to achieve the sharing of resources. peer-to-peer technology to share resources solves the problem. But some of the shortcomings of its own bring a number of other issues...
In recent years, the study of the grid economy is becoming a new hot spot with the grid technology development. Lots of models and middleware have been proposed by scholars to improve the application of grid economy. In our previous research work we have proposed the resource pricing fluctuation module (RPFM) as a part of grid architecture for computational economy (GRACE). However, as nodes in the...
Peer-to-peer (P2P) eCommerce are commonly perceived as an environment offering both opportunities and threats. For peers to be effective they need some mechanism for managing this risk of failure. One way to minimize threats in such an open environment is to exploit reputation to help evaluate the trustworthiness of what and predict the future behaviors of peers. In this study, a set of parameters...
To solve security problems of E-commerce system, this paper proposed a new trust model APR which is based on anticipative perceived risk. The concept of perceived risk was introduced into APR, many kinds of trust factor were taken to calculate the trust value among nodes, and an origination method was provided to integrate direct trust and recommendation trust. Comparing with other trust models, APR...
The characteristics, such as non-centralized structure, good autonomy and fault tolerance and so on, cause peer-to-peer network to be an effective resources sharing model on the Internet. However, the resource-located problem and the free-riding phenomenon of P2P are the most primary challenges. In this paper, semantic similarity, trust degree and active strength of the peer are fully considered,...
Construct a peer-to-peer (P2P) e-commerce trust model based on group-recommend. It divides P2P network into several functional peer group, computes direct trust value and the recommended trust value separately, and gets the total trust value. Experimental results demonstrate that this model can deal with the malicious attacks and help the users to find trading partner who can be trusted.
This paper proposes a model based on both direct reciprocity and the use of social network structures to incentive cooperation in human societies. The absence of third-party reputation assures that very few opportunities are left for lying and misreporting of information by the members of the community. Social relationships are built according to the criterion that nodes seek to interact with others...
In current peer-to-peer systems users interact with unknown services and users for the purpose of online transactions such as file sharing and trading of commodities. Peer-to-Peer reputation systems allow users to assess the trustworthiness of unknown entities based on subjective feedback from the other peers. However, this cannot constitute sufficient proof for many transactions like service composition,...
Successful uptake of digital ecosystems requires trust in the underlying platform and in the users of that platform. Accountability mechanisms provide a basis for creating, monitoring and evolving trust. This work analyses the requirements for accountability in digital ecosystems and proposes an accountability model for deployment of digital ecosystems in peer-to-peer networks.
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