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ATMOS
2010
183views Optimization» more  ATMOS 2010»
13 years 8 months ago
The Complexity of Integrating Routing Decisions in Public Transportation Models
To model and solve optimization problems arising in public transportation, data about the passengers is necessary and has to be included in the models in any phase of the planning...
Marie Schmidt, Anita Schöbel
SSD
2005
Springer
108views Database» more  SSD 2005»
14 years 3 months ago
On Trip Planning Queries in Spatial Databases
In this paper we discuss a new type of query in Spatial Databases, called the Trip Planning Query (TPQ). Given a set of points of interest P in space, where each point belongs to ...
Feifei Li, Dihan Cheng, Marios Hadjieleftheriou, G...
ESA
2009
Springer
124views Algorithms» more  ESA 2009»
14 years 4 months ago
Minimum Makespan Multi-vehicle Dial-a-Ride
Dial-a-Ride problems consist of a set V of n vertices in a metric space (denoting travel time between vertices) and a set of m objects represented as source-destination pairs {(si,...
Inge Li Gørtz, Viswanath Nagarajan, R. Ravi
IROS
2009
IEEE
159views Robotics» more  IROS 2009»
14 years 4 months ago
Data gathering tours for mobile robots
— We study a path planning problem which arises when multiple robots are used to gather data from stationary devices with wireless communication capabilities. Each device has a g...
Deepak Bhadauria, Volkan Isler
SODA
2003
ACM
119views Algorithms» more  SODA 2003»
13 years 11 months ago
Simultaneous optimization for concave costs: single sink aggregation or single source buy-at-bulk
We consider the problem of finding efficient trees to send information from k sources to a single sink in a network where information can be aggregated at intermediate nodes in t...
Ashish Goel, Deborah Estrin