Browsing Heuristic Optimization by Title
Now showing items 4867 of 71

On the Creation of Diverse Ensembles for Nonstationary Environments using Bioinspired Heuristics
(2017)Recently the relevance of adaptive models for dynamic data environments has turned into a hot topic due to the vast number of sce narios generating nonstationary data streams. When a change (concept drift) in data ... 
On the Gittins index in the M/G/1 queue
(20091231)For an M/G/1 queue with the objective of minimizing the mean number of jobs in the system, the Gittins index rule is known to be optimal among the set of nonanticipating policies. We develop properties of the Gittins ... 
On the Interplay between Scheduling Interval and Beamwidth Selection for LowLatency and Reliable V2V mmWave Communications
(2017)The interest in mmWave communications has risen sharply in the last years motivated by their widespread con sideration as a technological solution capable of dealing with the stringent rate requirements currently demanded ... 
Opportunistic schedulers for optimal scheduling of flows in wireless systems with ARQ feedback
(20121231)In this paper we study three opportunistic schedulers for the problem of optimal multiclass flowlevel scheduling in wireless downlink and uplink systems. For user channels we employ the GilbertElliot model of good and ... 
Optimal anticipative congestion control of flows with timevarying input stream
(20121231)This paper is concerned with a new type of congestion control method that we call anticipative congestion control, which exploits probabilistic information available at a network node about congestion at other nodes. ... 
Optimal congestion control of TCP flows for internet routers
(20121231)In this work we address the problem of fast and fair transmission of flows in a router, which is a fundamental issue in networks like the Internet. We model the interaction between a TCP source and a bottleneck queue with ... 
Optimal Phase Swapping in Low Voltage Distribution Networks based on Smart Meter Data and Optimization Heuristics
(2017)In this paper a modified version of the Harmony Search al gorithm is proposed as a novel tool for phase swapping in Low Voltage Distribution Networks where the objective is to determine to which phase each load should be ... 
Optimal planning of slowramping power production in energy systems with renewables forecasts and limited storage
(20141231)We address the costefficient operation of an energy production system under renewables uncertainty. We develop an MDP model for an idealized system with the following features: (1) perfectly predictable power demand, (2) ... 
Optimal policy for multiclass scheduling in a single server queue
(20091231)In this paper we apply the Gittins optimality result to characterize the optimal scheduling discipline in a multiclass M/G/1 queue. We apply the general result to several cases of practical interest where the service time ... 
Optimal routing in parallel, nonobservable queues and the price of anarchy revisited
(20101231)We consider a network of parallel, nonobservable queues and analyze the "price of anarchy", an index measuring the worstcase performance loss of a decentralized system with respect to its centralized counterpart in ... 
A parallel BranchandFix Coordination based matheuristic algorithm for solving large sized multistage stochastic mixed 01 problems
(20160826)A parallel matheuristic algorithm is presented as a spinoff from the exact BranchandFix Coordination (BFC) algorithm for solving multistage stochastic mixed 01 problems. Some steps to guarantee the solution’s optimality ... 
Price of anarchy in noncooperative load balancing games
(20111231)We investigate the price of anarchy of a load balancing game with K dispatchers. The service rates and holding costs are assumed to depend on the server, and the service discipline is assumed to be processorsharing at ... 
Properties of the gittins index with application to optimal scheduling
(20111231)We consider the optimal scheduling problem for a singleserver queue without arrivals. We allow preemptions, and our purpose is to minimize the expected flow time. The optimal nonanticipating discipline is known to be the ... 
Quantitative Analysis and Performance Study of Ant Colony Optimization Models Applied to MultiMode Resource Constraint Project Scheduling Problem
(2017)Constraint Satisfaction Problems (CSP) belongs to this kind of traditional NPhard problems with a high impact in both, research and industrial domains. However, due to the complexity that CSP problems exhibit, researchers ... 
Regularized optimization methods for convex MINLP problems
(20160101)We propose regularized cuttingplane methods for solving mixedinteger nonlinear programming problems with nonsmooth convex objective and constraint functions. The given methods iteratively search for trial points in certain ... 
Resourcesharing in a single server with timevarying capacity
(20111231)We investigate the problem of sharing the resources of a single server with timevarying capacity with the objective of minimizing the mean delay. We formulate the resource allocation problem as a Markov Decision Process. ... 
The Role of Local Urban Traffic and Meteorological Conditions in Air Pollution: A Databased Case Study in Madrid, Spainc
(2016)Urban air pollution is a matter of growing concern for both public adminis trations and citizens. Road traffic is one of the main sources of air pollutants, though topography characteristics and meteorological conditions ... 
Scheduling of users with Markovian timevarying transmission rates
(20131231)We address the problem of developing a wellperforming and implementable scheduler of users with wireless connection to the base station. The main feature of such reallife systems is that the quality conditions of the ... 
Secondorder semiimplicit projection methods for micromagnetics simulations
(2019)Micromagnetics simulations require accurate approximation of the magnetiza tion dynamics described by the LandauLifshitzGilbert equation, which is non linear, nonlocal, and has a nonconvex constraint, posing interesting ... 
Stability and asymptotic optimality of opportunistic schedulers in wireless systems
(20111231)We investigate the scheduling of a common resource between several concurrent users when the feasible transmission rate of each user varies randomly over time. Time is slotted and users arrive and depart upon service ...