TY - GEN
T1 - Minimum maximum degree publish-subscribe overlay network design
AU - Onus, Melih
AU - Richa, Andrea
PY - 2009
Y1 - 2009
N2 - Designing an overlay network for publish/subscribe communication in a system where nodes may subscribe to many different topics of interest is of fundamental importance. For scalability and efficiency, it is important to keep the degree of the nodes in the publish/subscribe system low. It is only natural then to formalize the following problem: Given a collection of nodes and their topic subscriptions connect the nodes into a graph which has least possible maximum degree and in such a way that for each topict, the graph induced by the nodes interested in t is connected. We present the first polynomial time logarithmic approximation algorithm for this problem and prove an almost tight lower bound on the approximation ratio. Our experimental results show that our algorithm drastically improves the maximum degree of publish/subscribe overlay systems. We also propose a variation of the problem by enforcing that each topic-connected overlay network be of constant diameter, while keeping the average degree low. We present a heuristic for this problem which guarantees that each topic-connected overlay network will be of diameter 2 and which aims at keeping the overall average node degree low. Our experimental results validate our algorithm showing that our algorithm is able to achieve very low diameter without increasing the average degree by much.
AB - Designing an overlay network for publish/subscribe communication in a system where nodes may subscribe to many different topics of interest is of fundamental importance. For scalability and efficiency, it is important to keep the degree of the nodes in the publish/subscribe system low. It is only natural then to formalize the following problem: Given a collection of nodes and their topic subscriptions connect the nodes into a graph which has least possible maximum degree and in such a way that for each topict, the graph induced by the nodes interested in t is connected. We present the first polynomial time logarithmic approximation algorithm for this problem and prove an almost tight lower bound on the approximation ratio. Our experimental results show that our algorithm drastically improves the maximum degree of publish/subscribe overlay systems. We also propose a variation of the problem by enforcing that each topic-connected overlay network be of constant diameter, while keeping the average degree low. We present a heuristic for this problem which guarantees that each topic-connected overlay network will be of diameter 2 and which aims at keeping the overall average node degree low. Our experimental results validate our algorithm showing that our algorithm is able to achieve very low diameter without increasing the average degree by much.
UR - http://www.scopus.com/inward/record.url?scp=70349705540&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349705540&partnerID=8YFLogxK
U2 - 10.1109/INFCOM.2009.5061998
DO - 10.1109/INFCOM.2009.5061998
M3 - Conference contribution
AN - SCOPUS:70349705540
SN - 9781424435135
T3 - Proceedings - IEEE INFOCOM
SP - 882
EP - 890
BT - IEEE INFOCOM 2009 - The 28th Conference on Computer Communications
T2 - 28th Conference on Computer Communications, IEEE INFOCOM 2009
Y2 - 19 April 2009 through 25 April 2009
ER -