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IPCO
2008
91views Optimization» more  IPCO 2008»
15 years 3 months ago
New Geometry-Inspired Relaxations and Algorithms for the Metric Steiner Tree Problem
Abstract. Determining the integrality gap of the bidirected cut relaxation for the metric Steiner tree problem, and exploiting it algorithmically, is a long-standing open problem. ...
Deeparnab Chakrabarty, Nikhil R. Devanur, Vijay V....
NETWORKS
2008
15 years 2 months ago
Lagrangian relaxation and enumeration for solving constrained shortest-path problems
Recently published research indicates that a vertex-labeling algorithm based on dynamic-programming concepts is the most efficient procedure available for solving constrained shor...
W. Matthew Carlyle, Johannes O. Royset, R. Kevin W...
JCO
2007
80views more  JCO 2007»
15 years 2 months ago
The wireless network jamming problem
In adversarial environments, disabling the communication capabilities of the enemy is a high priority. We introduce the problem of determining the optimal number and locations for ...
Clayton W. Commander, Panos M. Pardalos, Valeriy R...
135
Voted
TRANSCI
2010
169views more  TRANSCI 2010»
14 years 9 months ago
A Model and Algorithm for the Courier Delivery Problem with Uncertainty
We consider the Courier Delivery Problem, a variant of the Vehicle Routing Problem with time windows in which customers appear probabilistically and their service times are uncert...
Ilgaz Sungur, Yingtao Ren, Fernando Ordó&nt...
95
Voted
AIED
2009
Springer
15 years 9 months ago
The Extensible Problem-Specific Tutor (xPST): Evaluation of an API for Tutoring on Existing Interfaces
The Extensible Problem-Specific Tutor (xPST) system was created to facilitate the creation of intelligent tutoring systems (ITSs) on existing software and web-based interfaces. Thi...
Stephen B. Gilbert, Stephen Blessing, Sateesh Koda...