Research On Service Recommendation Model Based On Trustworthy Evaluation In Cloud Computing Environment

Cloud computing is an emerging commercial computing paradigm which is an important milestone in the development of computer technology. Under the cloud computing environment, huge amounts of resources are abstract into pool and sealed as service. At the request of cloud end users, there are different execution paths for the same service request. Evenly there exist different physical implementation for the same services which are different in processing speed, stability, trustworthy, maintainability and security. Therefore, it has become a hot topic in how to evaluate the trustworthy of cloud services so as to choose the high-quality of cloud service. And the research on the cloud service recommendation has some theoretical and application value. The main work and innovation of this paper are as follows:Firstly, the author analyses the characteristics of cloud computing, gives the definition of cloud droplet、cloud block、cloud layer、cloud cluster. Whtat’s more, introduces the definition of service trustworthy and service recommendation of cloud environment which pave the way for the research on the cloud service recommendationSecondly, a trustworthy evaluation mechanism for cloud service which can be divided into strong trustworthy evaluation and weak trustworthy evaluation from the perspective of system and end users has been proposed in this paper. In the part of strong trustworthy evaluation, on the basis of credible certification, the author proposes the strong trustworthy authentication algorithm which based on the logical reasoning. In the part of weak trustworthy evaluation, on the basis of the trust, the author proposes an identification mechanisms based on user feedback information, and gives the definition of two factorw based on time and the length of recommended path which is testified through simulation experiment, and analysises the completeness and performance of trustworthy recommendation respectively.Thirdly, a service recommendation model on the basis of trustworthy evaluation under cloud computing has been proposed. At first, the author describes users’ demands using the technology of cloud service compostion and defines the reliability of computing tasks. And then provids a single service recommendation model and mixed service recommendation model, gives the definitions of service recommendation factor within these two models. At last set the simulation experiment to testify that the service recommendation factor meeting the tendentious of service recommendation and the qualitative analysis is carried out by comparing with other similar models.Finally the author puts the proposed service recommendation model into the integrated business system of industrial and commercial cloud, analysises the application paradigm of the model.