Search results for "centers"

Hits ?▲	Authors	Title	Venue	Year	Link	Author keywords
56	Ashraf Saad, Deborah Boisvert	National science foundation advanced technological education projects and centers of excellence for information technology education: an overview.	SIGITE Conference	2005	DBLP DOI BibTeX RDF	NSF ATE projects and centers of excellence, advanced technological education, information technology education
50	Rich Friedrich, Jerome A. Rolia	Next generation data centers: trends and implications.	WOSP	2007	DBLP DOI BibTeX RDF	data centers, enterprise applications, IT infrastructure, enterprise management
48	Patricia Wyatt	The Proctoring Center: Software and Hardware Needs for the Disabled Student.	SIGUCCS	2008	DBLP DOI BibTeX RDF	proctoring centers, students with disabilities, testing centers, tutoring centers, administration
48	Marijn Janssen	Managing the development of shared service centers: stakeholder considerations.	ICEC	2005	DBLP DOI BibTeX RDF	centralization/decentralization, stakeholder theory, e-government, data centers, shared service centers
46	Alberto Guillén, Ignacio Rojas, Jesús González 0001, Héctor Pomares, Luis Javier Herrera, Olga Valenzuela, Fernando Rojas 0001	Output value-based initialization for radial basis function neural networks.	Neural Process. Lett.	2007	DBLP DOI BibTeX RDF	Radii, Neural networks, RBF, Function approximation, Initialization, RBFNN, Centers
46	Nikolaos Laoutaris, Pablo Rodriguez 0001, Laurent Massoulié	ECHOS: edge capacity hosting overlays of nano data centers.	Comput. Commun. Rev.	2008	DBLP DOI BibTeX RDF	peer-to-peer, data center, set-top-box
46	Jun Miao, Laiyun Qing, Lijuan Duan, Wen Gao 0001	Searching Eye Centers Using a Context-Based Neural Network.	ISNN (2)	2007	DBLP DOI BibTeX RDF
46	Huanjing Wang, Guangbin Fan, Jingyuan Zhang	Performance Comparison of Location Areas and Reporting Centers Under Aggregate Movement Behavior Mobility Models.	ICPP	2002	DBLP DOI BibTeX RDF
46	Xunfei Jiang, Ji Zhang 0002, Xiao Qin 0001, Meikang Qiu, Minghua Jiang, Jifu Zhang	Thermal Modeling and Management of Storage Systems in Data Centers.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
46	Sébastien Varrette, Pascal Bouvry, Mateusz Jarus, Ariel Oleksiak	Energy Efficiency in HPC Data Centers: Latest Advances to Build the Path to Exascale.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
46	Robert Birke, Lydia Y. Chen, Evgenia Smirni	Usage Patterns in Multi-tenant Data Centers: a Large-Case Field Study.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
46	Jorge Maestre Vidal, Ana Lucila Sandoval Orozco, Luis Javier García-Villalba	Network Intrusion Detection Systems in Data Centers.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
46	Madhurima Pore, Zahra Abbasi, Sandeep K. S. Gupta, Georgios Varsamopoulos	Techniques to Achieve Energy Proportionality in Data Centers: A Survey.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
46	Chengdong Wu, Jun Guo	Software Monitoring in Data Centers.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
46	Mohammed el Mehdi Diouri, Olivier Glück, Laurent Lefèvre, Jean-Christophe Mignot	Providing Green Services in HPC Data Centers: A Methodology Based on Energy Estimation.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
46	Ravi Jhawar, Vincenzo Piuri	Dependability-Oriented Resource Management Schemes for Cloud Computing Data Centers.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
46	Sabrina De Capitani di Vimercati, Sara Foresti, Giovanni Livraga, Pierangela Samarati	Selective and Private Access to Outsourced Data Centers.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
46	Luis Javier García-Villalba, Alejandra Guadalupe Silva Trujillo, Javier Portela	Privacy in Data Centers: A Survey of Attacks and Countermeasures.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
46	Keqin Li 0001	Energy-Efficient and High-Performance Processing of Large-Scale Parallel Applications in Data Centers.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
46	Weirong Jiang, Viktor K. Prasanna	Network Virtualization in Data Centers: A Data Plane Perspective.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
46	Ritu Arora	Data Management: State-of-the-Practice at Open-Science Data Centers.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
46	Shuai Mu 0001, Maomeng Su, Pin Gao, Yongwei Wu, Keqin Li 0001, Albert Y. Zomaya	Cloud Storage over Multiple Data Centers.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
46	JingZheng Wu, Yanjun Wu, Bei Guan, Yuqi Lin, Samee U. Khan, Nasro Min-Allah, Yongji Wang 0002	C2Hunter: Detection and Mitigation of Covert Channels in Data Centers.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
46	Cláudia Jacy Barenco Abbas, Ana Lucila Sandoval Orozco, Luis Javier García-Villalba	Monitoring of Data Centers using Wireless Sensor Networks.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
46	Fernando Turrado García, Ana Lucila Sandoval Orozco, Luis Javier García-Villalba	Building Scalable Software for Data Centers: An Approach to Distributed Computing at Enterprise Level.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
44	Dilip D. Kandlur, Tom W. Keller	Green data centers and hot chips.	DAC	2009	DBLP DOI BibTeX RDF	architecture, data centers, energy management
44	Weidong Zhao, Weihui Dai, Chunbin Tang	K-Centers Algorithm for Clustering Mixed Type Data.	PAKDD	2007	DBLP DOI BibTeX RDF	K-centers algorithm, mixed type data, Cluster analysis, centroid
44	Monique H. Jansen-Vullers, Mariska Netjes, Hajo A. Reijers, M. J. Stegeman	A Redesign Framework for Call Centers.	Business Process Management	2006	DBLP DOI BibTeX RDF	Simulation, Petri nets, Call centers, Business Process Redesign
43	Jungsik Lee, Charles D. Beach, Nazif Tepedelenlioglu	A practical radial basis function equalizer.	IEEE Trans. Neural Networks	1999	DBLP DOI BibTeX RDF
43	Sheri L. Prupis	The importance of a proactive approach to education at an educational/academic computer center.	SIGUCCS	1987	DBLP DOI BibTeX RDF
41	David S. Butcher, Christian J. Brigham, James Berhalter, Abigail L. Centers, William M. Hunkapiller, Timothy P. Murphy, Eric C. Palm, Julia H. Smith	Cybersecurity in a Large-Scale Research Facility - One Institution's Approach.	J. Cybersecur. Priv.	2023	DBLP DOI BibTeX RDF
41	Jessica Centers, Jeffrey L. Krolik	Multi-User Methods for Vibrational Radar Backscatter Communications.	ICASSP	2023	DBLP DOI BibTeX RDF
41	Jessica Centers, Jeffrey L. Krolik	A Vibrational Radar Backscatter Communication Experimental Testbed.	ACSSC	2023	DBLP DOI BibTeX RDF
41	Jessica Centers, Jeffrey L. Krolik	Vibrational Radar Backscatter Communication using Resonant Transponding Surfaces.	SAM	2022	DBLP DOI BibTeX RDF
41	Jessica Centers, Xinyu Tan, Ahmed H. Hareedy, A. Robert Calderbank	Power Spectra of Constrained Codes With Level-Based Signaling: Overcoming Finite-Length Challenges.	IEEE Trans. Commun.	2021	DBLP DOI BibTeX RDF
41	Jessica Centers, Jeffrey L. Krolik	Vibrational Radar Backscatter Communications.	ACSCC	2021	DBLP DOI BibTeX RDF
41	Jessica Centers, Xinyu Tan, Ahmed H. Hareedy, A. Robert Calderbank	Power Spectra of Constrained Codes with Level-Based Signaling: Overcoming Finite-Length Challenges.	CoRR	2020	DBLP BibTeX RDF
41	Alex A. T. Bui, John Darrell Van Horn, N. I. H. BD2K Centers Consortium	Envisioning the future of 'big data' biomedicine.	J. Biomed. Informatics	2017	DBLP DOI BibTeX RDF
40	Alexander Holland 0001	Modeling Uncertainty in Decision Support Systems for Customer Call Center.	Fuzzy Days	2004	DBLP DOI BibTeX RDF	bayesian networks, probabilities, uncertainties, decision support systems, decision making, fuzzy sets, Call centers
40	Jungsik Lee, Ravi Sankar, Jae-Jeong Hwang	Reduced RBF Centers Based Multi-user Detection in DS-CDMA Systems.	ICHIT	2006	DBLP DOI BibTeX RDF
40	Pavan Balaji, Karthikeyan Vaidyanathan, Sundeep Narravula, Hyun-Wook Jin, Dhabaleswar K. Panda 0001	Designing next generation data-centers with advanced communication protocols and systems services.	IPDPS	2006	DBLP DOI BibTeX RDF
38	Marijn Janssen	Centralized or decentralized organization?	DG.O	2005	DBLP BibTeX RDF	centralization/decentralization, decision-making, data centers, success factors, shared service centers
38	Nahum Shimkin, Avishai Mandelbaum	Rational Abandonment from Tele-Queues: Nonlinear Waiting Costs with Heterogeneous Preferences.	Queueing Syst. Theory Appl.	2004	DBLP DOI BibTeX RDF	tele-queues or invisible queues, abandonment, telephone call centers, Nash equilibrium, multi-server queues, impatient customers, contact centers
38	Hussam Abu-Libdeh, Paolo Costa, Antony I. T. Rowstron, Greg O'Shea, Austin Donnelly	Symbiotic routing in future data centers.	SIGCOMM	2010	DBLP DOI BibTeX RDF	key-value stores, routing protocols, data centers
38	Cullen E. Bash	Sustainable IT ecosystems and data centers.	ISLPED	2009	DBLP DOI BibTeX RDF	energy efficiency, sustainability, data centers
38	Efstratios F. Georgopoulos, Sotiris M. Giannaropoulos	Solving Resource Management Optimization Problems in Contact Centers with Artificial Neural Networks.	ICTAI (2)	2007	DBLP DOI BibTeX RDF	debt collection, neural networks, resource management, recoveries, score, contact centers
38	René W. Wagenaar	Governance of shared service centers in public administration: dilemmas and trade-offs.	ICEC	2006	DBLP DOI BibTeX RDF	IT design, e-government, governance, public administration, human resource management, organizational design, shared service centers, process innovation
38	Ger Koole, Avishai Mandelbaum	Queueing Models of Call Centers: An Introduction.	Ann. Oper. Res.	2002	DBLP DOI BibTeX RDF	queueing models, call centers
38	Alexander B. Bordetsky, Daniel R. Dolk	Knowledge Management for Wireless Grid Operations Centers.	HICSS	2002	DBLP DOI BibTeX RDF	network operation centers, management feedback, collaborative gateway, knowledge management, intelligent agents, MIBs, wireless grid
38	David V. Gibson, G. Thomas Harlan	Inter-organizational technology transfer: the case of the NSF science and technology centers.	HICSS (4)	1995	DBLP DOI BibTeX RDF	inter-organizational technology transfer, NSF science and technology centers, industry participants, technology implementation, technology utilization, technology transfer, technology acceptance, research and development, research and development management
36	Adi Ben-Israel, Cem Iyigun	Probabilistic D-Clustering.	J. Classif.	2008	DBLP DOI BibTeX RDF	Joint distance function, Weiszfeld method, Similarity matrix, Clustering, Mahalanobis distance, Probabilistic clustering, Harmonic mean
36	Josip Lukenda	Influence of the 1991-1995 war on Croatian publications in the MEDLINE database.	Scientometrics	2006	DBLP DOI BibTeX RDF
36	Michael J. Laszlo, Sumitra Mukherjee	A Genetic Algorithm Using Hyper-Quadtrees for Low-Dimensional K-means Clustering.	IEEE Trans. Pattern Anal. Mach. Intell.	2006	DBLP DOI BibTeX RDF	center selection, genetic algorithms, clustering, quadtrees, k-means algorithm, optimal partition
36	Rajat Mehrotra, Ioana Banicescu, Srishti Srivastava, Sherif Abdelwahed	A Power-Aware Autonomic Approach for Performance Management of Scientific Applications in a Data Center Environment.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Jungsoo Kim, Mohamed M. Sabry, Martino Ruggiero, David Atienza	Power-Thermal Modeling and Control of Energy-Efficient Servers and Datacenters.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Aleksandr Khasymski, M. Mustafa Rafique, Ali Raza Butt, Sudharshan S. Vazhkudai, Dimitrios S. Nikolopoulos	Realizing Accelerated Cost-Effective Distributed RAID.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Osman Khalid, Samee Ullah Khan, Sajjad Ahmad Madani, Khizar Hayat 0002, Lizhe Wang 0001, Dan Chen 0001, Rajiv Ranjan 0001	Opportunistic Databank: A context Aware on-the-fly Data Center for Mobile Networks.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Rohit P. Tahiliani, Mohit P. Tahiliani, K. Chandra Sekaran	TCP Congestion Control in Data Center Networks.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Yun Rock Qu, Shijie Zhou 0001, Viktor K. Prasanna	Packet Classification on Multi-core Platforms.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Ryan E. Grant, Mohammad J. Rashti, Pavan Balaji, Ahmad Afsahi	Scalable Network Communication Using Unreliable RDMA.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Yanlong Yin, Hui Jin 0001, Xian-He Sun	I/O and File Systems for Data-Intensive Applications.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Muhammad Usman Shahid Khan, Samee Ullah Khan	Smart Data Center.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Shaista Habib, Fawaz S. Bokhari, Samee U. Khan	Routing Techniques in Data Center Networks.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Asad Waqar Malik, Samee U. Khan	Data Center Modeling and Simulation Using OMNeT++.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Erik Saule, Hasan Metin Aktulga, Chao Yang 0001, Esmond G. Ng, Ümit V. Çatalyürek	An Out-of-Core Task-based Middleware for Data-Intensive Scientific Computing.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	José L. Abellán, Juan Fernández 0001, Manuel E. Acacio	Efficient Hardware-Supported Synchronization Mechanisms for Manycores.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Guillaume Aupy, Anne Benoit, Paul Renaud-Goud, Yves Robert	Energy-Aware Algorithms for Task Graph Scheduling, Replica Placement and Checkpoint Strategies.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Khurram Aziz, Mohsin Fayyaz	Optical Interconnects for Data Center Networks.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Kashif Bilal, Samee U. Khan, Marc Manzano, Eusebi Calle, Sajjad Ahmad Madani, Khizar Hayat 0002, Dan Chen 0001, Lizhe Wang 0001, Rajiv Ranjan 0001	Modeling and Simulation of Data Center Networks.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Yuichi Ohsita, Masayuki Murata 0001	Optical Data Center Networks: Architecture, Performance, and Energy Efficiency.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Chang Liu 0001, Rajiv Ranjan 0001, Xuyun Zhang, Chi Yang, Jinjun Chen	A Big Picture of Integrity Verification of Big Data in Cloud Computing.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Zujie Ren, Xiaohong Zhang, Weisong Shi	Resource Scheduling in Data-Centric Systems.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Junwhan Kim, Roberto Palmieri, Binoy Ravindran	On Scheduling in Distributed Transactional Memory: Techniques and Tradeoffs.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Wei Liu 0016, Alberto Nannarelli	Power and Thermal Efficient Numerical Processing.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Kishwar Ahmed, Shaolei Ren, Yuxiong He, Athanasios V. Vasilakos	Online Resource Management for Carbon-Neutral Cloud Computing.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Micha vor dem Berge, Jochen Buchholz, Leandro F. Cupertino, Georges Da Costa, Andrew Donoghue, Georgina Gallizo, Mateusz Jarus, Lara Lopez, Ariel Oleksiak, Enric Pages, Wojciech Piatek, Jean-Marc Pierson, Tomasz Piontek, Daniel Rathgeb, Jaume Salom, Laura Sisó, Eugen Volk, Uwe Wössner, Thomas Zilio	CoolEmAll: Models and Tools for Planning and Operating Energy Efficient Data Centres.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Babar Zahoor, Bibrak Qamar, Raihan Ur Rasool	Central Management of Datacenters.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	J. Rubén Titos Gil, Manuel E. Acacio	Hardware Approaches to Transactional Memory in Chip Multiprocessors.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Paolo Bellavista, Antonio Corradi, Andrea Reale	Quality-of-Service in Data Center Stream Processing for Smart City Applications.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Xin Jin, Yu-Kwong Kwok	Cloud Resource Pricing Under Tenant Rationality.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Zhinoos Razavi Hesabi, Zahir Tari, Andrzej M. Goscinski, Adil Fahad, Ibrahim Khalil, Carlos Queiroz	Data Summarization Techniques for Big Data - A Survey.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
36	Bingwei Liu, Yu Chen 0002	Auditing for Data Integrity and Reliability in Cloud Storage.	Handbook on Data Centers	2015	DBLP DOI BibTeX RDF
34	Walter Binder, Niranjan Suri	Green Computing: Energy Consumption Optimized Service Hosting.	SOFSEM	2009	DBLP DOI BibTeX RDF	service hosting, service dispatch, energy efficiency, service-level agreements, energy conservation, data centers, Green computing
34	Madhukar R. Korupolu, Aameek Singh, Bhuvan Bamba	Coupled placement in modern data centers.	IPDPS	2009	DBLP DOI BibTeX RDF
34	Jakita Owensby Thomas, Yolanda A. Rankin, Neil H. Boyette	Self service technologies: eliminating pain points of traditional call centers.	CHIMIT	2009	DBLP DOI BibTeX RDF	self service technologies, traditional call center, customer support
34	Swoyambhu Man Amatya	Functioning of rural tele-centers in Nepal: a case study of Kavre tele-centre.	ICEGOV	2009	DBLP DOI BibTeX RDF	rural tele-center, management, sustainability, Nepal
34	Natalie Granado, Gregory White 0001	Cyber Security and Government Fusion Centers.	HICSS	2008	DBLP DOI BibTeX RDF
34	Kun Niu, Shubo Zhang, Junliang Chen	An Initializing Cluster Centers Algorithm Based on Pointer Ring.	ISDA (1)	2006	DBLP DOI BibTeX RDF
34	Sundeep Narravula, Hyun-Wook Jin, Karthikeyan Vaidyanathan, Dhabaleswar K. Panda 0001	Designing Efficient Cooperative Caching Schemes for Multi-Tier Data-Centers over RDMA-enabled Networks.	CCGRID	2006	DBLP DOI BibTeX RDF
34	Alberto Guillén, Ignacio Rojas, Jesús González 0001, Héctor Pomares, Luis Javier Herrera, Alberto Prieto	Supervised RBFNN Centers and Radii Initialization for Function Approximation Problems.	IJCNN	2006	DBLP DOI BibTeX RDF
34	Yunming Ye, Joshua Zhexue Huang, Xiaojun Chen 0006, Shuigeng Zhou, Graham J. Williams, Xiaofei Xu	Neighborhood Density Method for Selecting Initial Cluster Centers in K-Means Clustering.	PAKDD	2006	DBLP DOI BibTeX RDF	Neighborhood-Based Clustering, Initial Cluster Center Selection, Clustering, k-means
34	Yiyu Chen 0001, Amitayu Das, Wubi Qin, Anand Sivasubramaniam, Qian Wang, Natarajan Gautam	Managing server energy and operational costs in hosting centers.	SIGMETRICS	2005	DBLP DOI BibTeX RDF	server provisioning, performance modeling, feedback control, energy management
34	Yun Bae Kim, Heesang Lee, Hoo-Gon Choi	A Discrete Event Simulation Study for Incoming Call Centers of a Telecommunication Service Company.	AIS	2004	DBLP DOI BibTeX RDF
34	Changzhou Wang, Xiaoyang Sean Wang	High-Dimensional Nearest Neighbor Search with Remote Data Centers.	Knowl. Inf. Syst.	2002	DBLP DOI BibTeX RDF	Online algorithm, High-dimensional data, Nearest neighbor search
34	Sven Graupner, Vadim E. Kotov, Holger Trinks	Resource-Sharing and Service Deployment in Virtual Data Centers.	ICDCS Workshops	2002	DBLP DOI BibTeX RDF
34	Sergei Bespamyatnikh, Michael Segal 0001	Fast Maintenance of Rectilinear Centers.	International Conference on Computational Science (1)	2001	DBLP DOI BibTeX RDF
32	Aaron Finerman	Computing capabilities at Argentine and Chilean universities.	Commun. ACM	1969	DBLP DOI BibTeX RDF	Argentine universities, Chilean universities, South American universities, computing science academic programs, developing nations, surveys of computing centers, university computing capabilities, university computing centers, university-student relationship, university education
32	Manish Marwah, Ratnesh K. Sharma, Rocky Shih, Chandrakant D. Patel, Vaibhav Bhatia, Mohandas Mekanapurath, Rajkumar Velumani, Sankaragopal Velayudhan	Data analysis, visualization and knowledge discovery in sustainable data centers.	Bangalore Compute Conf.	2009	DBLP DOI BibTeX RDF	visualization, knowledge discovery, compute, power, data analysis, sustainability, data centers, cooling
32	Prith Banerjee, Chandrakant D. Patel, Cullen E. Bash, Parthasarathy Ranganathan	Sustainable data centers: enabled by supply and demand side management.	DAC	2009	DBLP DOI BibTeX RDF	sustainability, data centers, exascale
32	Jing Xu 0012, Ming Zhao 0002, José A. B. Fortes, Robert Carpenter, Mazin S. Yousif	Autonomic resource management in virtualized data centers using fuzzy logic-based approaches.	Clust. Comput.	2008	DBLP DOI BibTeX RDF	Two-level control, Virtualization, Resource management, Autonomic computing, Data centers, Fuzzy modeling