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Support for Concept Hierarchies in DHTs

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4 Author(s)
Asiki, A. ; Sch. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Athens ; Doka, K. ; Tsoumakos, D. ; Koziris, N.

Concept hierarchies greatly help in the organization and reuse of information and are widely used in a variety of applications, such as data warehouses. In this paper, we describe a method for efficiently storing and querying data organized into concept hierarchies and dispersed over a DHT. In our method, peers individually decide on the level of indexing according to the incoming queries. Roll-up and drill-down operations are performed on a per-node basis in order to minimize the number of floods for answering queries on varying levels of granularity. Initial experimental results support this argument on a variety of workloads.

Published in:

Peer-to-Peer Computing , 2008. P2P '08. Eighth International Conference on

Date of Conference:

8-11 Sept. 2008