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ECEASST
2010
15 years 4 months ago
Checking Graph-Transformation Systems for Confluence
d Abstract) Detlef Plump Abstract. In general, it is undecidable whether a terminating graphtransformation system is confluent or not. We introduce the class of coverable hypergrap...
Detlef Plump
KDD
2008
ACM
147views Data Mining» more  KDD 2008»
16 years 7 months ago
Mobile call graphs: beyond power-law and lognormal distributions
We analyze a massive social network, gathered from the records of a large mobile phone operator, with more than a million users and tens of millions of calls. We examine the distr...
Mukund Seshadri, Sridhar Machiraju, Ashwin Sridhar...
FOCS
2009
IEEE
16 years 1 months ago
Approximation Algorithms for Multicommodity-Type Problems with Guarantees Independent of the Graph Size
— Linial, London and Rabinovich [16] and Aumann and Rabani [3] proved that the min-cut max-flow ratio for general maximum concurrent flow problems (when there are k commodities...
Ankur Moitra
AI
1998
Springer
15 years 6 months ago
Utility-Based On-Line Exploration for Repeated Navigation in an Embedded Graph
In this paper, we address the tradeo between exploration and exploitation for agents which need to learn more about the structure of their environment in order to perform more e e...
Shlomo Argamon-Engelson, Sarit Kraus, Sigalit Sina
CIKM
2009
Springer
16 years 1 months ago
Independent informative subgraph mining for graph information retrieval
In order to enable scalable querying of graph databases, intelligent selection of subgraphs to index is essential. An improved index can reduce response times for graph queries si...
Bingjun Sun, Prasenjit Mitra, C. Lee Giles