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ACM Transactions on Database Systems (TODS)
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Communications of the ACM
Chord: A scalable peer-to-peer lookup service for internet applications
Proceedings of the 2001 conference on Applications, technologies, architectures, and protocols for computer communications
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Proceedings of the 2001 conference on Applications, technologies, architectures, and protocols for computer communications
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ICS '02 Proceedings of the 16th international conference on Supercomputing
Scalable Management and Data Mining Using Astrolabe
IPTPS '01 Revised Papers from the First International Workshop on Peer-to-Peer Systems
Pastry: Scalable, Decentralized Object Location, and Routing for Large-Scale Peer-to-Peer Systems
Middleware '01 Proceedings of the IFIP/ACM International Conference on Distributed Systems Platforms Heidelberg
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The VLDB Journal — The International Journal on Very Large Data Bases
Peer-to-peer information retrieval using self-organizing semantic overlay networks
Proceedings of the 2003 conference on Applications, technologies, architectures, and protocols for computer communications
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Proceedings of the 2003 conference on Applications, technologies, architectures, and protocols for computer communications
Tapestry: An Infrastructure for Fault-tolerant Wide-area Location and
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ICDCS '05 Proceedings of the 25th IEEE International Conference on Distributed Computing Systems
Tag Indexed DHT for Scalable Search Infrastructure in Social NetworkApplications
P2P '06 Proceedings of the Sixth IEEE International Conference on Peer-to-Peer Computing
IrisNet: An Architecture for a Worldwide Sensor Web
IEEE Pervasive Computing
An optimal overlay topology for routing peer-to-peer searches
Proceedings of the ACM/IFIP/USENIX 2005 International Conference on Middleware
Efficient peer-to-peer keyword searching
Proceedings of the ACM/IFIP/USENIX 2003 International Conference on Middleware
INFOCOM'96 Proceedings of the Fifteenth annual joint conference of the IEEE computer and communications societies conference on The conference on computer communications - Volume 2
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Emerging social network applications for sharing and collaboration need a way to publish and search a big amount of social objects. Currently, social applications allow the association of a set of user defined keywords, named tags, when publishing these objects, in order to allow searching for them later using a subset of these tags. Commercial systems and recent research community proposals preclude a wide Internet deployment due to the emergence of scalability and hot spot problems in the nodes. We propose T-DHT, an innovative hybrid unstructured-structured DHT based approach, to cope with these high demanding requirements, in a fully scalable, distributed and balanced way. The storage process allows attaching a set of user tags to the stored object and takes at most O(Log(N)) node hops. The tag information attached to the object is stored in a compact way into the node links using a bloom filter, in order to be used later in the search process. The search process allows searching for previously stored objects by means of a tag conjunction and also takes at most O(Log(N)) node hops. The search process is based on DHT typical search combined with an unstructured search algorithm using the tag information previously stored into bloom filters of node links. The simulation results show T-DHT performs in a fully balanced and scalable way, without generating typical hot spot problems even if unbalanced distributions of popular tags are used. Although T-DHT has been devised to build a scalable infrastructure for social applications, it can be applied to solve the more general Peer-to-Peer keyword search problems.