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AIRWEB
2009
Springer
16 years 28 days ago
Tag spam creates large non-giant connected components
Spammers in social bookmarking systems try to mimick bookmarking behaviour of real users to gain the attention of other users or search engines. Several methods have been proposed...
Nicolas Neubauer, Robert Wetzker, Klaus Obermayer
AAAI
2006
15 years 7 months ago
CUI Networks: A Graphical Representation for Conditional Utility Independence
We introduce CUI networks, a compact graphical representation of utility functions over multiple attributes. CUI networks model multiattribute utility functions using the well stu...
Yagil Engel, Michael P. Wellman
ICALP
2009
Springer
16 years 6 months ago
SDP-Based Algorithms for Maximum Independent Set Problems on Hypergraphs
Abstract. This paper deals with approximations of maximum independent sets in non-uniform hypergraphs of low degree. We obtain the first performance ratio that is sublinear in term...
Elena Losievskaja, Geir Agnarsson, Magnús M...
DM
2010
129views more  DM 2010»
15 years 6 months ago
Interpolating between bounds on the independence number
For a non-negative integer T, we prove that the independence number of a graph G = (V, E) in which every vertex belongs to at most T triangles is at least uV f(d(u), T) where d(u)...
Anett Boßecker, Dieter Rautenbach
COCOON
2007
Springer
16 years 15 days ago
Generating Minimal k-Vertex Connected Spanning Subgraphs
Abstract. We show that minimal k-vertex connected spanning subgraphs of a given graph can be generated in incremental polynomial time for any fixed k.
Endre Boros, Konrad Borys, Khaled M. Elbassioni, V...