An Analysis on Differential Query Services in Cost–Efficient Clouds
Journal Title: International Journal of Science Engineering and Advance Technology - Year 2015, Vol 3, Issue 10
Abstract
In the simplest terms, cloud computing means storing and accessing data and programs over the Internet instead of your computer's hard drive. The cloud is just a metaphor for the Internet. Now a days Cloud computing as an emerging technology trend is expected to reshape the advances in information technology. In a cost-efficient cloud environment, a user can tolerate a certain degree of delay while retrieving information from the cloud to reduce costs. In this paper, i am address two fundamental issues in such an environment: privacy and efficiency. My first review a private keyword-based file retrieval scheme that was originally proposed by Ostrovsky. Their scheme allows a user to retrieve files of interest from an untrusted server without leaking any information. The main drawback is that it will cause a heavy querying overhead incurred on the cloud and thus goes against the original intention of cost efficiency. In this paper, present three efficient information retrieval for ranked query (EIRQ) schemes to reduce querying overhead incurred on the cloud. In EIRQ, queries are classified into multiple ranks, where a higher ranked query can retrieve a higher percentage of matched files. A user can retrieve files on demand by choosing queries of different ranks. This feature is useful when there are a large number of matched files, but the user only needs a small subset of them. Under different parameter settings, extensive evaluations have been conducted on both analytical models and on a real cloud environment, in order to examine the effectiveness of our schemes.
Authors and Affiliations
Shaik Noorjahan| M.Tech (IT), Nimra College of Engineering & Technology, A.P., India, G Minni| Asst. Professor, Dept. of Computer Science & Information and Technology, Nimra College of Engineering & Technology, A.P., India, Sayeed Yasin| Head of the Department, Dept. of Computer Science & Engineering, Nimra College of Engineering & Technology, A.P., India
Keywords
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