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JCT
2007
111views more  JCT 2007»
15 years 6 months ago
Removing even crossings
An edge in a drawing of a graph is called even if it intersects every other edge of the graph an even number of times. Pach and T´oth proved that a graph can always be redrawn so...
Michael J. Pelsmajer, Marcus Schaefer, Daniel Stef...
WG
2009
Springer
16 years 1 months ago
Exact and Parameterized Algorithms for Max Internal Spanning Tree
We consider the NP-hard problem of finding a spanning tree with a maximum number of internal vertices. This problem is a generalization of the famous Hamiltonian Path problem. Our...
Henning Fernau, Serge Gaspers, Daniel Raible
PRICAI
1998
Springer
15 years 10 months ago
Point-Based Approaches to Qualitative Temporal Reasoning
Weaddress the general problemof finding algorithms for efficient, qualitative, point-basedtemporalreasoning over a set of operations. Weconsider general reasonerstailored for temp...
Tim Van Allen, James P. Delgrande, Arvind Gupta
STOC
2009
ACM
171views Algorithms» more  STOC 2009»
16 years 7 months ago
On the geometry of graphs with a forbidden minor
We study the topological simplification of graphs via random embeddings, leading ultimately to a reduction of the Gupta-Newman-Rabinovich-Sinclair (GNRS) L1 embedding conjecture t...
James R. Lee, Anastasios Sidiropoulos
CIKM
2008
Springer
15 years 8 months ago
The query-flow graph: model and applications
Query logs record the queries and the actions of the users of search engines, and as such they contain valuable information about the interests, the preferences, and the behavior ...
Paolo Boldi, Francesco Bonchi, Carlos Castillo, De...