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- Irina Dumitrescu, Natashia Boland
- Networks
- 2003

Much has been written on shortest path problems with weight, or resource, constraints. However, relatively little of it has provided systematic computational comparisons for a representativeâ€¦ (More)

- Natashia Boland, John Dethridge, Irina Dumitrescu
- Oper. Res. Lett.
- 2006

A label setting algorithm for solving the Elementary Resource Constrained Shortest Path Problem, using node resources to forbid repetition of nodes on the path, is implemented. A state-spaceâ€¦ (More)

- Irina Dumitrescu, Stefan Ropke, Jean-FranÃ§ois Cordeau, Gilbert Laporte
- Math. Program.
- 2010

The Traveling Salesman Problem with Pickup and Delivery (TSPPD) is defined on a graph containing pickup and delivery vertices between which there exists a one-toone relationship. The problem consistsâ€¦ (More)

- Thomas StÃ¼tzle, Irina Dumitrescu, Marco Chiarandini
- Handbook of Approximation Algorithms andâ€¦
- 2007

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- Irina Dumitrescu, Thomas StÃ¼tzle
- EvoWorkshops
- 2003

In this paper we describe the advantadges and disadvantages of local search and exact methods of solving NP-hard problems and see why combining the two approaches is highly desirable. We review someâ€¦ (More)

Given a directed graph whose arcs have an associated cost, and associated weight, the weight constrained shortest path problem (WCSPP) consists of Â®nding a least-cost path between two speciÂ®ed nodes,â€¦ (More)

- Lucas Lessing, Irina Dumitrescu, Thomas StÃ¼tzle
- ANTS Workshop
- 2004

In this paper we present a study of several Ant Colony Optimization (ACO) algorithms for the Set Covering Problem. In our computational study we emphasize the influence of different ways of definingâ€¦ (More)

- Natashia Boland, Irina Dumitrescu, Gary Froyland, Ambros M. Gleixner
- Computers & OR
- 2009

Given a discretisation of an orebody as a block model, the open pit mining production scheduling problem (OPMPSP) consists of finding the sequence in which the blocks should be removed from the pit,â€¦ (More)

The Open Pit Mine Production Scheduling Problem (OPMPSP) studied in recent years is usually based on a single geological estimate of material to be excavated and processed over a number of decades.â€¦ (More)

- Irina Dumitrescu, Thomas StÃ¼tzle
- Matheuristics
- 2010

Exact mathematical programming techniques such as branch-andbound or dynamic programming and stochastic local search techniques have traditionally been seen as being two general but distinctâ€¦ (More)