Showing 1 - 10 of 65
We address the problem of scheduling a multiclass $M/M/m$ queue with Bernoulli feedback on $m$ parallel servers to minimize time-average linear holding costs. We analyze the performance of a heuristic priority-index rule, which extends Klimov's optimal solution to the single-server case: servers...
Persistent link: https://www.econbiz.de/10005771994
We show that if performance measures in a stochastic scheduling problem satisfy a set of so-called partial conservation laws (PCL), which extend previously studied generalized conservation laws (GCL), then the problem is solved optimally by a priority-index policy for an appropriate range of...
Persistent link: https://www.econbiz.de/10005772040
We argue the importance both of developing simple sufficient conditions for the stability of general multiclass queueing networks and also of assessing such conditions under a range of assumptions on the weight of the traffic flowing between service stations. To achieve the former, we review a...
Persistent link: https://www.econbiz.de/10005772144
Most research on single machine scheduling has assumed the linearity of job holding costs, which is arguably not appropriate in some applications. This motivates our study of a model for scheduling $n$ classes of stochastic jobs on a single machine, with the objective of minimizing the total...
Persistent link: https://www.econbiz.de/10005772394
The Drivers Scheduling Problem (DSP) consists of selecting a set of duties for vehicle drivers, for example buses, trains, plane or boat drivers or pilots, for the transportation of passengers or goods. This is a complex problem because it involves several constraints related to labour and...
Persistent link: https://www.econbiz.de/10005772475
The achievable region approach seeks solutions to stochastic optimisation problems by: (i) characterising the space of all possible performances (the achievable region) of the system of interest, and (ii) optimising the overall system-wide performance objective over this space. This is radically...
Persistent link: https://www.econbiz.de/10005772495
(the so-called achievable region approach) in dynamic and stochastic optimization. …
Persistent link: https://www.econbiz.de/10005772592
optimization. We introduce a hierarchy of n (where n is the number of bandits) increasingly stronger linear programming relaxations …
Persistent link: https://www.econbiz.de/10005772596
, distribution centers and recovery plants. To solve the model we have combined optimization and simulation procedures. …
Persistent link: https://www.econbiz.de/10005772139
In this paper I explore the issue of nonlinearity (both in the data generation process and in the functional form that establishes the relationship between the parameters and the data) regarding the poor performance of the Generalized Method of Moments (GMM) in small samples. To this purpose I...
Persistent link: https://www.econbiz.de/10005772026