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133
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SCHEDULING
2010
137views more  SCHEDULING 2010»
15 years 1 months ago
Criticality analysis of activity networks under interval uncertainty
This paper reconsiders the PERT scheduling problem when information about task duration is incomplete. We model uncertainty on task durations by intervals. With this problem formu...
Jérôme Fortin, Pawel Zielinski, Didie...
ISAAC
2003
Springer
75views Algorithms» more  ISAAC 2003»
15 years 8 months ago
On the Existence and Determination of Satisfactory Partitions in a Graph
The Satisfactory Partition problem consists in deciding if a given graph has a partition of its vertex set into two nonempty sets V1, V2 such that for each vertex v, if v ∈ Vi th...
Cristina Bazgan, Zsolt Tuza, Daniel Vanderpooten
IPL
2010
115views more  IPL 2010»
15 years 1 months ago
Hardness and approximation of minimum distortion embeddings
We show that the problem of computing a minimum distortion embedding of a given graph into a path remains NP-hard when the input graph is restricted to a bipartite, cobipartite, o...
Pinar Heggernes, Daniel Meister
ICDE
2010
IEEE
193views Database» more  ICDE 2010»
15 years 10 months ago
Schema covering: a step towards enabling reuse in information integration
Abstract—We introduce schema covering, the problem of identifying easily understandable common objects for describing large and complex schemas. Defining transformations between...
Barna Saha, Ioana Stanoi, Kenneth L. Clarkson
128
Voted
COMPGEOM
2006
ACM
15 years 9 months ago
Vines and vineyards by updating persistence in linear time
Persistent homology is the mathematical core of recent work on shape, including reconstruction, recognition, and matching. Its pertinent information is encapsulated by a pairing o...
David Cohen-Steiner, Herbert Edelsbrunner, Dmitriy...