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APIN
2005
98views more  APIN 2005»
13 years 9 months ago
3-D Container Packing Heuristics
In this paper, we study the 3-D container packing problem. The problem is divided into box selection, space selection, box orientation and new space generation sub-problems. As a f...
Andrew Lim, Brian Rodrigues, Y. Yang
PODS
2003
ACM
142views Database» more  PODS 2003»
14 years 10 months ago
Query containment and rewriting using views for regular path queries under constraints
In this paper we consider general path constraints for semistructured databases. Our general constraints do not suffer from the limitations of the path constraints previously stud...
Gösta Grahne, Alex Thomo
ICGA
1997
153views Optimization» more  ICGA 1997»
13 years 11 months ago
Optimization of Large Scale Parcel Distribution Systems by the Breeder Genetic Algorithm (BGA)
The routing and scheduling of vehicles and their crews is an area of increasing importance. In this paper, we describe a large scale vehicle scheduling and routing problem which i...
Ulrich Bartling, Heinz Mühlenbein
SEBD
2007
148views Database» more  SEBD 2007»
13 years 11 months ago
Containment of Conjunctive Object Meta-Queries
We consider the problem of query containment over an object data model derived from F-logic. F-logic has generated considerable interest commercially, in the academia, and within ...
Andrea Calì, Michael Kifer
ICDT
2003
ACM
125views Database» more  ICDT 2003»
14 years 3 months ago
XPath Containment in the Presence of Disjunction, DTDs, and Variables
XPath is a simple language for navigating an XML tree and returning a set of answer nodes. The focus in this paper is on the complexity of the containment problem for various fragm...
Frank Neven, Thomas Schwentick