Contact at mumbai.academics@gmail.com or 8097636691/9323040215
Responsive Ads Here

Thursday, 22 February 2018

CCD: A Distributed Publish/Subscribe Framework for Rich Content Formats(2012)


CCD: A Distributed Publish/Subscribe Framework for Rich Content Formats(2012)

Abstract:
In this paper, we propose a content-based publish/subscribe (pub/sub) framework that delivers matching content to subscribers in their desired format. Such a framework enables the pub/sub system to accommodate richer content formats including multimedia publications with image and video content. In our proposed framework, users (consumers) in addition to specifying their information needs (subscription queries), also specify their profile which includes the information about their receiving context which includes characteristics of the device used to receive the content (e.g., resolution of a PDA used by a consumer). The pub/sub system besides being responsible for matching and routing the published content, also becomes responsible for converting the content into the suitable format for each user. Content conversion is achieved through a set of content adaptation operators (e.g., image transcoder, document translator, etc.). We study algorithms for placement of such operators in heterogeneous pub/sub broker overlay in order to minimize the communication and computation resource consumption. Our experimental results show that careful placement of operators in pub/sub overlay network results in significant cost reduction.
Existing System:
Existing pub/sub systems have concentrated on providing efficient dissemination service for simple publication formats such as numerical content.
The receivers unable receive the content, if it is other format which is not supporting to them. Therefore the file content download rating will be decreased.
Disadvantages of Existing:
·         In the previous project, the user able to download the content, which is supporting to them. If they need any other content which is in another format is difficult to download.
·         The process of content convert is not introduced.
·         The rich content formats are not available in the existing system.
Proposed Systems:
In proposed system, we introduced customized content dissemination system, where content is only delivered to receivers that have requested it and in their desired format.
We proposed operator placement algorithms on top of DHT-based pub/sub framework to customize content format such that dissemination cost, which we defined as a linear function of customization (computing) and transmission (communication) costs, is minimized.
We formally defined the problem proposed approaches to use estimated dissemination tree and take into account broker overlay heterogeneity and concurrent publications effect.
In our proposed framework, users (consumers) in addition to specifying their information needs (subscription queries), also specify their profile which includes the information about their receiving context which includes characteristics of the device used to receive the content (e.g., resolution of a PDA used by a consumer).
Module Description:
1.      Login and redirect
2.      Client Registration
3.      Rendezvous storage
4.      Rendezvous Algorithm
5.      Pub/Sub contents
     a.       Desired formats
     b.      Converted formats
Client Registration:
In this client registration section all the clients, which takes part in the network has to be registered with their nearest rendezvous point. The registration may have the details about the client such as their name, system type, memory capacity, supportable software and other relevant information.
Rendezvous Storage:
In this rendezvous storage section, the information which is received from the client will be stored in the database for information publish and subscriptions. The appropriate id and password will be issued to the client after successful completion of registration with the rendezvous. This rendezvous fetches the data from the server on concerning the information stored about the user and provides to its appropriate formats.
Login and Redirect:
After completion of registration with the rendezvous point, the client can get into the network. This will be done with the id and the password issued by the server. With the help of id and the password the server will loaded with the rendezvous point’s storage data. For example if the id and password matched with the mobile type, then the mobile basic server page will be loaded.
Rendezvous algorithm:
This proposed algorithm performs the operation about the content dissemination. The content will be fetched from the server and then converted if needed on comparing with the database in the rendezvous. The rendezvous converts the content for its desired format due to inconvenience of original format from the server.
pub/sub contents:
This module takes place with the help of rendezvous algorithm. The client can either upload (Publish) or download (Subscribe) with the help of rendezvous algorithm. The uploading content will be checked out in the rendezvous point, whether it is capable to upload this document? And send it to the server page if correct.
The subscription is also checked out to find, whether it is capable of receiving this file? After checking the client the rendezvous will allow the content. If the client needs any file, which is not supportable, the
rendezvous will convert it into its desired format i.e. the client’s supportable format.
Software Requirements:
Operating System                              : Windows Family
Language                                           : J2EE
Back End                                           : MySQL
Hardware Requirements:
Processor                                            : Pentium dual core
RAM                                                  : 1 GB
Hard Disk Drive                                : 80 GB

No comments:

Post a Comment