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Copyright © 2015 LeMeniz Infotech. All rights reserved
Page number 1
LeMeniz Infotech
36, 100 Feet Road, Natesan Nagar, Near Indira Gandhi Statue,
Pondicherry-605 005.
Call: 0413-4205444, +91 9566355386, 99625 88976.
Web : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
Efficient Filtering Algorithms for Location-
Aware Publish/Subscribe
Abstract
Location-based services have been widely adopted in many systems.
Existing works employ a pull model or user-initiated model, where a user issues a
query to a server which replies with location-aware answers. To provide users with
instant replies, a push model or server-initiated model is becoming an inevitable
computing model in the next-generation location-based services. In the push
model, subscribers register spatio-textual subscriptions to capture their interests,
and publishers post spatio-textual messages. This calls for a high-performance
location-aware publish/subscribe system to deliver publishers’ messages to
relevant subscribers. In this paper, we address the research challenges that arise in
designing a location-aware publish/subscribe system. We propose an R-tree based
index by integrating textual descriptions into R-tree nodes. We devise efficient
filtering algorithms and effective pruning techniques to achieve high performance.
Our method can support both conjunctive queries and ranking queries. We discuss
how to support dynamic updates efficiently. Experimental results show our method
achieves high performance which can filter 500 messages in a second for 10
million subscriptions on a commodity computer.
EXISTING SYSTEM
In Existing System, pull model or user-initiated model, where a user issues a
query to a server which replies with location-aware answers.
Do Your Projects With Domain Experts…
Copyright © 2015 LeMeniz Infotech. All rights reserved
Page number 2
LeMeniz Infotech
36, 100 Feet Road, Natesan Nagar, Near Indira Gandhi Statue,
Pondicherry-605 005.
Call: 0413-4205444, +91 9566355386, 99625 88976.
Web : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
DRAWBACK OF EXISTING SYSTEM
Query to a server which responds with location aware answers, which
returns answers based on user’s location and keywords.
PROPOSED SYSTEM
To provide users with instant replies, a push model or server-initiated model
is becoming an inevitable computing model in the next-generation location-based
services.
We propose an R-tree based index by integrating textual descriptions into R-tree
nodes.
ADVANTAGE OF PROPOSED SYSTEM
Support both conjunctive queries and ranking queries.
Instant replies, a push model or server-initiated model.
SYSTEM SPECIFICATION
Hardware Requirements
System : Pentium IV 2.4 GHz
Hard Disk : 40 GB
Floppy Drive : 1.44 Mb
Monitor : 15 VGA Colour
Mouse : Logitech
Do Your Projects With Domain Experts…
Copyright © 2015 LeMeniz Infotech. All rights reserved
Page number 3
LeMeniz Infotech
36, 100 Feet Road, Natesan Nagar, Near Indira Gandhi Statue,
Pondicherry-605 005.
Call: 0413-4205444, +91 9566355386, 99625 88976.
Web : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
Ram : 512 Mb
Software Requirements
Operating system : Windows Family
Tools : eclipse/Netbeans
Technology Used : Java
Backend Used : SQL Server

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Efficient filtering algorithms for location aware publish-subscribe

  • 1. Do Your Projects With Domain Experts… Copyright © 2015 LeMeniz Infotech. All rights reserved Page number 1 LeMeniz Infotech 36, 100 Feet Road, Natesan Nagar, Near Indira Gandhi Statue, Pondicherry-605 005. Call: 0413-4205444, +91 9566355386, 99625 88976. Web : www.lemenizinfotech.com / www.ieeemaster.com Mail : projects@lemenizinfotech.com Efficient Filtering Algorithms for Location- Aware Publish/Subscribe Abstract Location-based services have been widely adopted in many systems. Existing works employ a pull model or user-initiated model, where a user issues a query to a server which replies with location-aware answers. To provide users with instant replies, a push model or server-initiated model is becoming an inevitable computing model in the next-generation location-based services. In the push model, subscribers register spatio-textual subscriptions to capture their interests, and publishers post spatio-textual messages. This calls for a high-performance location-aware publish/subscribe system to deliver publishers’ messages to relevant subscribers. In this paper, we address the research challenges that arise in designing a location-aware publish/subscribe system. We propose an R-tree based index by integrating textual descriptions into R-tree nodes. We devise efficient filtering algorithms and effective pruning techniques to achieve high performance. Our method can support both conjunctive queries and ranking queries. We discuss how to support dynamic updates efficiently. Experimental results show our method achieves high performance which can filter 500 messages in a second for 10 million subscriptions on a commodity computer. EXISTING SYSTEM In Existing System, pull model or user-initiated model, where a user issues a query to a server which replies with location-aware answers.
  • 2. Do Your Projects With Domain Experts… Copyright © 2015 LeMeniz Infotech. All rights reserved Page number 2 LeMeniz Infotech 36, 100 Feet Road, Natesan Nagar, Near Indira Gandhi Statue, Pondicherry-605 005. Call: 0413-4205444, +91 9566355386, 99625 88976. Web : www.lemenizinfotech.com / www.ieeemaster.com Mail : projects@lemenizinfotech.com DRAWBACK OF EXISTING SYSTEM Query to a server which responds with location aware answers, which returns answers based on user’s location and keywords. PROPOSED SYSTEM To provide users with instant replies, a push model or server-initiated model is becoming an inevitable computing model in the next-generation location-based services. We propose an R-tree based index by integrating textual descriptions into R-tree nodes. ADVANTAGE OF PROPOSED SYSTEM Support both conjunctive queries and ranking queries. Instant replies, a push model or server-initiated model. SYSTEM SPECIFICATION Hardware Requirements System : Pentium IV 2.4 GHz Hard Disk : 40 GB Floppy Drive : 1.44 Mb Monitor : 15 VGA Colour Mouse : Logitech
  • 3. Do Your Projects With Domain Experts… Copyright © 2015 LeMeniz Infotech. All rights reserved Page number 3 LeMeniz Infotech 36, 100 Feet Road, Natesan Nagar, Near Indira Gandhi Statue, Pondicherry-605 005. Call: 0413-4205444, +91 9566355386, 99625 88976. Web : www.lemenizinfotech.com / www.ieeemaster.com Mail : projects@lemenizinfotech.com Ram : 512 Mb Software Requirements Operating system : Windows Family Tools : eclipse/Netbeans Technology Used : Java Backend Used : SQL Server