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E-commerce occurs in the P2P(peer-to-peer)
E-commerce. The peer-to-peer (P2P) systems and
applications employ distributed resources to perform
critical functions in a decentralized manner. Peer-to-peer
computing is the sharing of computer resources and
services through direct communication between systems.
a P2P-based architecture doesn’t require extra costs to
set up separate servers, but once a requesting peer needs
to know a service provider’s trust status, in general, it
must broadcast a request to other peers. Thus, this
architecture is costly in terms of network communication.
Person-to-person online auction sites such as eBay
and many business-to-business (B2B) services such as
supply-chain-management networks are examples of P2P
communities built on top of a client-server architecture.
In E-Commerce settings, P2P communities are often
established dynamically with peers(transction parties)
that are unrelated and unknown to each other. Peers have
to manage the risk involved with the transactions without
prior experience and knowledge about each other’s
reputation. One way to address this uncertainty problem
is to develop strategies for establishing trust and develop
systems that can assist peers in assessing the level of trust
they should place on an E-Commerce transaction. [8]
C. Distributed Trust Management
Different from either of these architectures is a
distributed architecture, which comprises a set of trust
management brokers that partition the data among
themselves. This method also helps partition the trust
computation workload and provides a more reliable
environment because it can ensure a relatively complete
data set. However, the collaboration among brokers and
the cost to set them up might be concerns.
Researchers have also actively studied trust issues in
multiagent environments. A software agent is
autonomous and self-interested, expected to complete the
tasks its owner or other agents specified. In addition to
evaluating trust in agent interactions (such as transactions
in an e-commerce context or services in an SOC one),
studies looking at multiagent environments must consider
other issues, such as agents ’ motivations and the
influence and dependency relationships among them.[9]
III. CLOUD TRUST MODEL IN EC
Recently, cloud computing has emerged as an
important technology that has received attention from
both the research community and service industry. Cloud
computing is a recent trend in IT that moves computing
and data away from desktop and portable PCs into large
data centers. Within the cloud,Consumers purchase such
services in the form of infrastructure-as-a-service (IaaS),
platform-as-a-service (PaaS), or software-as-a-service
(SaaS) and sell value-added services(such as utility
services) to users. We can apply cloud computing
technology to the trust management in E-commerce.And
then,a Cloud Trust Model (CTM) is prospersed in the
article concerning the applications of cloud computing at
persent.
A. Applications of Clouds
We can distinguish two different architectural
models for clouds: the first one is designed to scale out
by providing additional computing instances on demand.
Clouds can use these instances to supply services in the
form of SaaS and PaaS. The second architectural model
is designed to provide data and compute-intensive
applications via scaling capacity.[10]
B. the Framework of Cloud Trust Model in E-commerce
As showed by the figure 1,the CTM comprises
Cloud Trust Services
increasing the
capacity of
computing
Cloud Computing
applications
multi-Dementional analysis in
special trasation
general evaluation analysis in
history trasations
noise elimination in trust
evaluation managem
trust
management
server/the third
party
peer(trasaction
party) trust
management
Centralized
Trust
Decentraized
Trust
the paltform of
computing
recommender’s role analysis in
the role hierarchy
attributes trust
brokes/
multiagent
Distributed
Trust
Social network analysis
ID system
Data Mining
Figure 1. the Framework of Cloud Trust Model in E-commerce
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