Sunday, February 7, 2016



Soy un nuevo usuario

Olvidé mi contraseña

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rss_1.0 Recursos de colección

ORBi Open Repository and Bibliography (241,238 recursos)
In may 2007, the ULg's Administrative Board (joined in June 2007 by the FUSAGx) decided to create an institutional repository and defined a strong institutional self-archiving policy to increase the visibility, accessibility and impact of the University's publications (Board's decision). This decision led to the official launch, in November 2008, of the ORBi platform including both the Academic Bibliography and the Institutional Repository of the Wallonia-Europe University Academy.

Business & economic sciences => Quantitative methods in economics & management

Mostrando recursos 1 - 20 de 306

1. Tightening linearizations of non-linear binary optimization problems - Rodriguez Heck, Elisabeth; Crama, Yves

2. Continuous Departure Time of Day Preferences for Continental U.S. Airline Markets Segmented by Distance, Direction of Travel, Number of Time Zones, Day of Week and Itinerary Type - Lurkin, Virginie; Garrow, Laurie; Higgins, Matthew; Newman, Jeffrey; Schyns, Michael
Airlines use itinerary choice models to allocate the total number of passengers in a city pair to specific itineraries. In a related paper, we estimated a multinomial logit (MNL) itinerary choice model using database of more than 3 million tickets for Continental U.S. markets provided by the Airlines Reporting Corporation that accounted for price endogeneity. The size and comprehensiveness of our database allowed us to estimate highly refined continuous departure time of day preference curves that account for distance, direction of travel, the number of time zones traversed, departure day of week and itinerary type (outbound, inbound or one-way). This...

3. Accounting for Price Endogeneity in Airline Itinerary Choice Models: An Application to Continental U.S. Markets - Lurkin, Virginie; Garrow, Laurie; Higgins, Matthew; Newman, Jeffrey; Schyns, Michael
Peer reviewed

4. A Comparison of Departure Time of Day Formulations - Lurkin, Virginie; Garrow, Laurie; Higgins, Matthew; Newman, Jeffrey; Schyns, Michael
Peer reviewed

5. Monitoring Delivery Networks in supply chains - Faraz, Alireza
Peer reviewed

6. Monitoring distribution networks in supply chains - Faraz, Alireza
Peer reviewed

7. Monitoring partnership networks- A graph theory approach - Faraz, Alireza; Treiblmaier, Horst; Gerschberger, Markus
Peer reviewed

8. Linearization and quadratization approaches for non-linear 0-1 optimization - Rodriguez Heck, Elisabeth; Crama, Yves

9. PDIRPTW Instances - Limbourg, Sabine

10. Comment réduire l'impact environnemental pour le transport de marchandises ? - Limbourg, Sabine
Avec l'internationalisation des activités économiques, la demande de transport a considérablement augmenté suite à l’allongement des distances et à la multiplication des fréquences d’envois. Pour répondre aux exigences du e-commerce et des livraisons à domicile, de nouveaux schémas logistiques sont indispensables. Ces défis doivent être relevés tout en minimisant les nuisances environnementales. A l'occasion de ce lunch-conférence, Sabine Limbourg exposera le résultat de ses recherches, basées sur des méthodes quantitatives, explorant trois options permettant de réduire l'impact environnemental pour le transport des marchandises. Ces options sont le transport intermodal qui combine efficacement plusieurs modes de transport, l'intégration de véhicules électriques...

11. Several constructive heuristics for the three dimensional Multiple Bin Size Bin Packing Problem with air transportation constraints - Paquay, Célia; Limbourg, Sabine; Oliveira, José Fernando; Schyns, Michael

12. A best fit decreasing algorithm for the three dimensional bin packing problem - Paquay, Célia; Schyns, Michael; Limbourg, Sabine

13. Large neighborhood search for multi-trip vehicle routing - François, Véronique; Arda, Yasemin; Crama, Yves; Laporte, Gilbert
Version 30/11/2015

14. Quadratizations of pseudo-Boolean functions - Crama, Yves
A pseudo-Boolean function is a real-valued function of 0-1 variables. Every pseudo-Boolean function can be represented by various analytical expressions, e.g., as a polynomial in its variables, or as a polynomial in its variables and in their Boolean complements, or as a disjunctive form, or as pointwise minimum of a family of affine functions, and so forth. Motivated by the problem of minimizing pseudo-Boolean functions, we consider yet another class of representations. Namely, we say that g(x,y) is a quadratization of the pseudo-Boolean function f(x) if g(x,y) is a quadratic pseudo-Boolean function of x and of m auxiliary binary variables y...

15. Revealed preference tests of collectively rational consumption behavior - Crama, Yves
To verify the empirical adequacy of a particular household consumption model, it is important to develop efficient tests did can be applied to real-world data. These tests check whether the observed household behavior is "rational" in the sense that it is consistent with the predictions of the model. In this talk, we present different approaches based on revealed preferences to test collective models of household consumption. Testing collective rationality is computationally difficult (NP-hard). In order to overcome this negative result, we introduce mixed-integer programming formulations which can be used for medium-sized datasets. Next, we propose simulated annealing heuristics, which allow...

16. Estimating the out-of-sample predictive ability of trading rules: a robust bootstrap approach - Hambuckers, julien; Heuchenne, Cédric
Peer reviewed

17. Exact and Heuristic Solution Methods for a VRP with Time Windows and Variable Service Start Time - Michelini, Stefano; Arda, Yasemin; Crama, Yves; Küçükaydin, Hande
Peer reviewed

18. Intermodal network design: a mixed-integer nonlinear model for costs and emissions minimization - Mostert, Martine; Limbourg, Sabine; Caris, An
Peer reviewed

19. Modeling the dependence between extreme operational losses and economic factors: a conditional semi-parametric Generalized Pareto approach - Hambuckers, julien; Heuchenne, Cédric; Lopez, Olivier
Peer reviewed

20. Estimation of Airline Itinerary Choice Models Using Disaggregate Ticket Data - Lurkin, Virginie; Garrow, Laurie A.; Higgins, Matthew J.; Schyns, Michael
Peer reviewed

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