Filters








935,111 Hits in 6.8 sec

Utility-Based Policy Management System for Virtual Organization

Anas J.A. Husai, Chan Huah Yong
2009 Journal of Computer Science  
It outperforms the related system by 9.99% for acceptance function and 5.77% for conflict resolution and 4.65% for policy merging.  ...  Results: The evaluation results demonstrated that the proposed approach was able to manage VO policies and achieve higher utility for VO participant through its management functions.  ...  Utility level metric: We proposed the level of utility that is preserved by VO participants as a metric to be used for system performance evaluation.  ... 
doi:10.3844/jcssp.2009.635.645 fatcat:wvcn3wc4xbaitdgfywckaln5um

Mobility assisted device-to-device communications underlaying cellular networks

Chuhan Gao, Yong Li, Depeng Jin
2016 2016 International Conference on Computing, Networking and Communications (ICNC)  
Through extensive simulations, we demonstrate MAD2D greatly enhanced the system performance compared with the state-of-the-art solutions.  ...  By formulating the above process-oriented optimization problems, we introduce a utility function and contention graph based approaches, termed MAD2D (Mobility assisted D2D), to heuristically solve them  ...  PERFORMANCE EVALUATION In this section, we give extensive performance evaluation for MAD2D under various traffic patterns.  ... 
doi:10.1109/iccnc.2016.7440571 dblp:conf/iccnc/Gao0J16 fatcat:63w4oznjr5g2jd366s34z7v4vm

Neural-Network-Based Dynamic Distribution Model of Parking Space Under Sharing and Non-Sharing Modes

Ziyao Zhao, Yi Zhang, Yi Zhang, Kaifeng Ji, He Qi
2020 Sustainability  
At the experimental stage, a simulation case and a real-time case were performed to evaluate the developed models.  ...  The performance score of the dynamic parking distribution model for a time interval of 2–20 min was maintained above 80%.  ...  Utility Function and Distribution Modes Utility Functions for Parking Lot Assessment Parking lots are assessed using a utility function, which was established according to discrete choice theory.  ... 
doi:10.3390/su12124864 fatcat:gbakt4akmvgdjgem4udwardiuq

Utility-based resource allocation for virtual machines in Cloud computing

Dorian Minarolli, Bernd Freisleben
2011 2011 IEEE Symposium on Computers and Communications (ISCC)  
a local node utility function and a global controller that initiates live migrations of virtual machines to other physical nodes to maximize a global system utility function.  ...  In this paper, a two-tier resource management approach based on adequate utility functions is presented, consisting of local controllers that dynamically allocate CPU shares to virtual machines to maximize  ...  Maximizing the global system utility function through optimized local CPU share settings and global live migrations means finding a proper tradeoff between cost and performance.  ... 
doi:10.1109/iscc.2011.5983872 dblp:conf/iscc/MinarolliF11 fatcat:3cx76nyltndgxj5b2zolmh4eii

Interdomain I/O Optimization in Virtualized Sensor Networks

Congfeng Jiang, Tiantian Fan, Yeliang Qiu, Hongyuan Wu, Jilin Zhang, Neal Xiong, Jian Wan
2018 Sensors  
For performance optimization, we use state flags in a circular buffer to reduce wait-and-notify operations and system calls during communications.  ...  In virtualized sensor networks, virtual machines (VMs) share the same hardware for sensing service consolidation and saving power.  ...  This command evaluation sets the update time to 1 s and the number of iterations to 200, then it prints the collected CPU utilization data through awk.  ... 
doi:10.3390/s18124395 fatcat:fsjvkj3wcrft5pujzaymrqzyyi

Performance evaluation of a distributed application performance monitor [chapter]

R. J. Friedrich, J. A. Rolia
1996 Distributed Platforms  
The Distributed Measurement System (DMS) is a software-based measurement infrastructure for monitoring the performance of distributed application systems.  ...  In this paper we evaluate DMS in two configurations: a monitor for quality of service and a collector for model building parameters.  ...  University for helping to document and explore early versions of the model.  ... 
doi:10.1007/978-0-387-34947-3_20 fatcat:ppp6asr7nbhjrlf3dpcyo3dsny

Evaluation of Educational Content Sharing Solutions Challenges of the mEducator Best Practice Network

I. Nicolaidou, D. Giordano, C. Spampinato, C.S. Pattichis, P. Bamidis, A. Antoniades
2011 Zenodo  
for medical educational content sharing.  ...  There is currently no standardized way of evaluating these solutions; however there are other systems and Web2.0 platforms that have commonalities with the mEducator solutions and as such can share aspects  ...  Acknowledgements: This work was supported by the project mEducator (Multi-type Content Sharing and Repurposing in Medical Education), funded by the eContentplus Programme, a multiannual Community programme  ... 
doi:10.5281/zenodo.2574971 fatcat:ulwuhegvu5hrjghqgbakgmf2om

Providing Effective Access to Shared Resources: A COIN Approach [chapter]

Stéphane Airiau, Sandip Sen, David H. Wolpert, Kagan Tumer
2004 Lecture Notes in Computer Science  
In turn, each such agent's function should be both relatively easy for the agent to learn to optimize, and "aligned" with the overall utility function of the system manager -an overall function that is  ...  Managers of systems of shared resources typically have many separate goals.  ...  De£nition of the World Utility Function G The world utility function measures the performance of the overall system. It is the responsibility of the system designer to set this function.  ... 
doi:10.1007/978-3-540-24701-2_17 fatcat:bqdqgg4am5fkdmiieca4uqto5u

Utility-Based Scheduling for Bulk Data Transfers between Distributed Computing Facilities

Xin Wang, Wei Tang, Rajkumar Kettimuttu, Zhiling Lan
2015 2015 44th International Conference on Parallel Processing Workshops  
Uncoordinated scheduling of competing data transfers over shared network links results in suboptimal system performance and poor user experiences.  ...  Specifically, the scheduler prioritizes and allocates resources to data transfer requests based on user-centric utility functions in order to achieve maximum overall user satisfaction.  ...  We give our special thanks to Drs John Jenkins and Misbah Mubarak from Argonne's CODES project team (led by Dr Robert Ross) for their support and consultant in network simulation.  ... 
doi:10.1109/icppw.2015.37 dblp:conf/icppw/WangTKL15 fatcat:ziyrl7m2ufa7da22fbapjvd5zi

Evolving system bottlenecks in the as a service cloud [article]

Shaun C. D'Souza
2018 arXiv   pre-print
This will allow the customer to understand the performance bottleneck and tune the system and application parameters.  ...  Additionally, Linux based designs allow for a system wide profiling of application characteristics. The customer is an OEM who provides Linux based servers for telecom solutions.  ...  We use the report implementation to view a percentage utilization of the shared libraries and functions in the application -Listing 2. >> perf report Network drivers We evaluate the performance of  ... 
arXiv:1809.07794v1 fatcat:7lt3pcqpnva7thowtdyxtzfrg4

Non-intrusive Performance Management for Computer Services [chapter]

Magnus Karlsson, Christos Karamanolis
2006 Lecture Notes in Computer Science  
Thus, some form of resource control is required to ensure contractual performance targets for service customers under dynamic workload and system conditions.  ...  This paper evaluates Proteus, a prototype implementation of the proposed approach, on two different services: a 3-tier e-commerce system and a networked file service.  ...  Fortunately, we can derive a function relating shares to utility, as utility (U ) is a given function of performance and RLS estimates a model correlating performance with shares inside the share controller  ... 
doi:10.1007/11925071_2 fatcat:ugiiisggzzh47hz6m7azbk7xpi

Experimental Analysis of Reinforcement Learning Techniques for Spectrum Sharing Radar [article]

Charles E. Thornton, R. Michael Buehrer, Anthony F. Martone, Kelly D. Sherbondy
2020 arXiv   pre-print
Each RL technique is evaluated in terms of convergence, radar detection performance achieved in a congested spectral environment, and the ability to share 100MHz spectrum with an uncooperative communications  ...  as Deep RL techniques, which utilize a form of Q-Learning to approximate a parameterized function that is used by the radar to select optimal actions.  ...  Thus, there is a significant need for radar systems capable of dynamic spectrum sharing.  ... 
arXiv:2001.01799v2 fatcat:rosuqkut55bshagg7qja5dzm64

Mitigating Free Riding in Peer-To-Peer Networks: Game Theory Approach

MO Yahaya
2015 Nigerian Journal of Technology  
The performance of peer The performance of peer The performance of peer The performance of peer----to to to to----peer systems is based on the quality and quantity of resource contributions from peer systems  ...  In most systems, users are assumed to be cooperative, but in reality, sharing in peer peers. In most systems, users are assumed to be cooperative, but in reality, sharing in peer peers.  ...  Performance Performance Performance Performance Evaluation Evaluation Evaluation Evaluation In the next two subsections, we describe the performance metrics used to evaluate the proposed model and  ... 
doi:10.4314/njt.v34i2.23 fatcat:ogdfffzemnemtfdka4tfibub6i

A methodology for database system performance evaluation

Haran Boral, David J DeWitt
1984 Proceedings of the 1984 ACM SIGMOD international conference on Management of data - SIGMOD '84  
This paper presents a methodology for evaluating the performance of database management systems and database machines in a multiuser environment.  ...  We demonstrate that only four basic query types are needed to construct a benchmark that will evaluate the performance of a system under a wide variety of workloads.  ...  The first experiments explore system performance as a function of multiprogramming level and degree of data sharing for each of the four query types.  ... 
doi:10.1145/602282.602283 fatcat:dyzi45dmcfe6tpzv32tx2fbuwa

A methodology for database system performance evaluation

Haran Boral, David J DeWitt
1984 Proceedings of the 1984 ACM SIGMOD international conference on Management of data - SIGMOD '84  
This paper presents a methodology for evaluating the performance of database management systems and database machines in a multiuser environment.  ...  We demonstrate that only four basic query types are needed to construct a benchmark that will evaluate the performance of a system under a wide variety of workloads.  ...  The first experiments explore system performance as a function of multiprogramming level and degree of data sharing for each of the four query types.  ... 
doi:10.1145/602259.602283 dblp:conf/sigmod/BoralD84 fatcat:cydddnkcfzbyzhgwllt24ub4ka
« Previous Showing results 1 — 15 out of 935,111 results