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146
Taming the computational complexity of combinatorial auctions: Optimal and approximate approaches
, 1999
"... In combinatorial auctions, multiple goods are sold simultaneously and bidders may bid for arbitrary combinations of goods. Determining the outcome of such an auction is an optimization problem that is NP-complete in the general case. We propose two methods of overcoming this apparent intractability. ..."
Abstract
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Cited by 288 (9 self)
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. The first method, which is guaranteed to be optimal, reduces running time by structuring the search space so that a modified depth-first search usually avoids even considering allocations that contain conflicting bids. Caching and pruning are also used to speed searching. Our second method is a heuristic
Materials for an exploratory theory of the network society.
- The British Journal of Sociology
, 2000
"... ABSTRACT This article aims at proposing some elements for a grounded theor y of the network society. The network society is the social structure characteristic of the Information Age, as tentatively identi ed by empirical, cross-cultural investigation. It permeates most societies in the world, in v ..."
Abstract
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Cited by 122 (0 self)
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of value. Third, the new economy is networked. At the heart of the connectivity of the global economy and of the exibility of informational production, there is a new form of economic organization, the network enterprise. This is not a network of enterprises. It is a network made from either rms
Temporal Bandwidth-Intensive Virtual Network Allocation Optimization in a Data Center Network
"... Abstract—In this paper, we consider bandwidth-intensive services for customers that want virtual networks (VN) in a data center environment. In particular, we consider this problem in a temporal context where bandwidth-intensive requests from each VN may arrive randomly at a review point, which may ..."
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last for a certain duration. Thus, at each review point, the data center network provider must optimally allocate resources for the demand requests. For this problem, we present a mixed-integer programming (MIP) problem formulation where any request from a VN customer may be assigned to any virtual
Automated Allocation of ESA Ground Station Network Services
"... The ESTRACK Planning System (EPS) operationally plans the use of the ESAs ESTRACK ground station network. It uses an incremental planning approach to successively build up the ESTRACK Management Plan using feedback provided by its user missions. The system is configured with a specification of the u ..."
Abstract
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Cited by 1 (0 self)
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configuration. The network is built incrementally exploiting the periodic nature of the communication request timings required by the user missions. The resulting CSP contains temporal binary constraints, linear constraints and disjunctions of binary constraints. Its consistency is checked in two steps: first
Efficient Management of Data Center Resources for Massively Multiplayer
"... (MMOGs) can include millions of concurrent players spread across the world. To keep these highly-interactive virtual environments online, a MMOG operator may need to provision tens of thousands of computing resources from various data centers. Faced with large resource demand variability, and with m ..."
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(MMOGs) can include millions of concurrent players spread across the world. To keep these highly-interactive virtual environments online, a MMOG operator may need to provision tens of thousands of computing resources from various data centers. Faced with large resource demand variability
Spatial-Temporal Compressed Sensing Based Traffic Prediction in Cellular Networks
"... Abstract—In conventional cellular networks, base stations (B-Ss) usually suffer from severe power consumption since they are working to guarantee the coverage and QoS (quality-of-service) requirement according to the peak traffic load generated by the mobile cellular users Accordingly, how to precis ..."
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to precisely forecast the future traffic load to promote network cooperation and adaptive energy resource allocation in complying with the variation of spatial-temporal traffic load has been an emerged issue due to the significant energy exhaustion of BSs. In this paper, we propose a spatial-temporal
Traffic Control for Network Protection Against Spreading Processes
"... Epidemic outbreaks in human populations are facili-tated by the underlying transportation network. We consider strategies for containing a viral spreading pro-cess by optimally allocating a limited budget to three types of protection resources: (i) Traffic control re-sources, (ii), preventative reso ..."
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Epidemic outbreaks in human populations are facili-tated by the underlying transportation network. We consider strategies for containing a viral spreading pro-cess by optimally allocating a limited budget to three types of protection resources: (i) Traffic control re-sources, (ii), preventative
Statistical validation and spatio-temporal modelling of river monitoring networks
, 2007
"... The European Water Framework Directive (WFD)(EC, 2000) is one of the driving forces in environmental policy in the European Union (EU). The WFD's overall environmental objective is the achievement of a 'good status' for all of Europe's surface- and ground waters within a 15-year ..."
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be used for these purposes because data originating from environmental monitoring networks are clearly not independent. They are sampled from a dynamic process that evolves over space and time. Therefore, the methodology should incorporate this spatio-temporal dependence structure in order to provide
Efficiency of Operations in Container Terminals: A Frontier Method
"... Nowadays transporting cargo via containers are significant for every shipment. The movement of container involves multi modes to reach destination. In Malaysia, efficient transport networking systems are catalyst for container terminal in providing excellent services to their client. The paper focus ..."
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frontier method is used to analyse panel data from 2003 to 2010 in relation with container terminal equipments and throughput. Result of the analysis shows no significant relationship between container terminal size and efficiency. Thus, efficiency is determined from allocation of resources efficiently
A Virtual Time System for Linux-container-based Emulation of Software-defined Networks
"... ABSTRACT Realistic and scalable testing systems are critical to evaluate network applications and protocols to ensure successful real system deployments. Container-based network emulation is attractive because of the combination of many desired features of network simulators and physical testbeds . ..."
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with system resources via precisely scaling the time of interactions between containers and physical devices by a factor of n, hence, making an emulated network appear to be n times faster from the viewpoints of applications in the container. In this paper, we develop a lightweight Linux-container
Results 1 - 10
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146