CURRICULUM VITAE Dr. ELENI STAI

Education •

Email: [email protected]

Oct. 2009 ∼ Jan. 2015

National Technical University of Athens (NTUA), Athens, Greece Ph.D., School of Electrical and Computer Engineering (ECE)

Ph.D. Thesis Title: Cross-layer Design and Optimization of Wireless Multihop Networks" Advisor: Prof. Symeon Papavassiliou Cumulative GPA: 10.0/10.0



University of Maryland (UMD), College Park, USA Visiting Scholar for Ph.D. studies, Institute for Systems Research (ISR)

June 2011 ∼ May 2012

Advisor: Prof. John S. Baras

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Oct. 2012 ∼ June 2014

National Technical University of Athens, Athens, Greece Master of Science (M.Sc.) in Applied Mathematical Sciences Cumulative GPA: 9.45/10.0 Excellent (Ranked

1st /19)

Major: Probability and Statistics Master Thesis Title: Stochastic Optimal Control with Applications in Wireless Communications Networks" Advisor: Assistant Prof. Michail Loulakis

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National and Kapodistrian University of Athens (NKUA), Athens, Greece Bachelor's degree (Ptychion) in Mathematics (4 years degree) Cumulative GPA: 7.93/10.0 (Ranked

Oct. 2009 ∼ Feb. 2013

7th /95)

Major: Applied Mathematics

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Sept. 2004 ∼ Oct. 2009

National Technical University of Athens, Athens, Greece Diploma in Electrical and Computer Engineering (5 years degree) Cumulative GPA: 9.3/10.0 Excellent (Top

3%)

Major: Networks/Telecommunications, Minor: Energy Systems/Computer Architecture Diploma Thesis Title: Mechanisms for Improving Network Performance, Based on Node Degree, with Applications in Ad hoc and Social Networks

Awards And Honors

Recipient of the Dimitris N. Chorafas Foundation award for NTUA (best Ph.D. thesis award) Awarded Scholarship for graduate studies (M.Sc., NTUA) from the Greek State Scholarship Foun-

2015 2012 - 2014

dation Awarded Scholarship for graduate studies (Ph.D., NTUA) & academic excellence from the Foun-

2011 - 2014

dation of Education and European Civilization (IPEP) Awarded Scholarship for graduate studies (Ph.D., NTUA) & academic excellence from the A.G.

2012 - 2013

Leventis Foundation Thomaides Foundation publication award (Ph.D., NTUA) Awarded the Onassis Foundation Scholarship to attend Onassis Foundation lectures on Network

2010, 2011, 2012, 2013 2010

and Information Security (Summer School) undergraduate stud-

2007

Award from EFG Eurobank for highest ranked student in class in the Panhellenic University

2006 2004

Greek State Scholarship Foundation Award for academic distinction (top

1%,

ies, NTUA) Chris Papakiriakopoulos Award for academic excellence in mathematics Entrance Examinations Award from the General Secretariat for Youth (participation in the program Youth Getting to Know Europe) for ranked in the top

300

2003

high school students of Greece

Awards for Excellence and Distinction in High School,

12

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in total, Greek Ministry of Education

1998 − 2004

Research Interests •

Wireless Ad hoc Networks, Cross-layer Network Design and Optimization, Scheduling, Routing, Power Control and Congestion Control for Wireless Networks, Network Utility Maximization (NUM), Topology Control for Wireless Networks.

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Social & Complex Networks, Social Network Analysis, Interactions between Wireless Networks and Social Networks, Information Diusion in Complex Networks, Personalization, Recommendation.

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Optimization Techniques (Stochastic & Deterministic), Graph Theoretic Models, Network Modeling & Simulation, Cooperative & Evolutionary Game Theory, Hyperbolic Geometry and Applications in Networks, Stochastic Processes, Statistics & Data Analysis, Markov Random Fields, Optimal Control (Stochastic & Deterministic), Queueing Theory.

Academic Experience •

Jan. 2015 ∼ today

Postdoctoral Research Associate

NETwork Management and Optimal DEsign Laboratory (Netmode), NTUA, Athens, Greece



Conducting research mainly focused on the topics of cross-layer design and optimization of wireless networks, information diusion in complex networks, interplay between social and wireless networks, big data analytics, personalization and recommendation.

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Working in research projects. Teaching assistance in undergraduate/graduate courses. Preparation of funding request proposals.

Oct. 2009 ∼ May 2011 & June 2012 ∼ Jan. 2015

Research Associate

NETwork Management and Optimal DEsign Laboratory (Netmode), NTUA, Athens, Greece



Performed research on cross-layer design and optimization of wireless networks, topology control of wireless networks and interplay between social and wireless networks.

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Participated in research projects. Teaching assistance in undergraduate/graduate courses. Participated in the preparation of funding request proposals.

Graduate Research Assistant Institute for Systems Research, University of Maryland, College Park, USA



June 2011 ∼ May 2012

Conducted research on optimal scheduling and routing in wireless ad hoc networks using properties of hyperbolic geometric space.

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Oct. 2009 ∼ May 2011 & June 2012 ∼ today

Teaching Assistant National Technical University of Athens, Greece

Assisted in teaching graduate and undergraduate electrical engineering courses.

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Self-organizing Ad Hoc Networks (633: Graduate level, School of ECE, NTUA) Queueing Systems (3.5.19.6: Junior year, School of ECE, NTUA) Stochastic Systems & Communications (3.5.11.5: Junior year, School of ECE, NTUA)

Diploma Thesis (Senior Year Project) Supervisor 1. Antonia Mpitsaki Thesis: Information Diusion Strategy Evolution under Time-Varying User Behavior in Generalized Networks" (Expected December 2015) 2. Adamantia Chletsou Thesis: Information Diusion in Generalized Networks while Considering Users' Interests and Social Network Analysis Metrics", July 2015, http://artemis.cslab.ntua.gr/Dienst/UI/1.0/Display/artemis.ntua.ece/DT2015-0195 (in Greek)

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3. Eirini Milaiou Thesis: Information Diusion Models and Techniques over Online Social Networks: the Case of Twitter", March 2015, http://artemis.cslab.ntua.gr:80/Dienst/UI/1.0/Display/artemis.ntua.ece/DT2015-0085 (in Greek)

Research Projects

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Jan. 2015∼ today

Project MECANEX" (H2020 ICT project)

Title: Multimedia Content Annotations for Rapid Exploitation in Multi-Screen Environments".

MECANEX devises innovative tools for automatic annotation of multimedia content, extraction of personalized information and adaption in multi-screen environments. Working on the design and development of the Social and Personalization Tool to provide personalized services and recommendations of multimedia content to the users of multi-screen environments.

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Feb. 2013 ∼ today

Project FAN-of-NUM" (GSRT-1260-ARISTEIA)

Title: Foundations of Advanced Networking by means of Network Utility Maximization".

FAN-of-NUM project aims at establishing and evolving a common network engineering mathematical language", based on advanced network utility maximization (NUM) theory, to build a solid foundation for the design of modularized and distributed control of networks, as well as for the analysis and treatment of the available resources and corresponding network resource allocation mechanisms. It will dene principles and methodologies for designing proper utilities, setting the corresponding NUMs and solving them. It will set the basis for a new era of protocols and architectures exploiting cross layering, modularization, and autonomicity, and will facilitate the reengineering of old ones. I am involved in all of its tasks, with focus on the wireless multihop networks.

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2009 ∼ 2011

Project EFIPSANS" (FP7- INFSO-ICT-215549)

Title: Exposing the Features in IP version six Protocols that can be Exploited for the Purposes of Designing/Building Autonomic Networks and Services (EFIPSANS)".

Participated in the design of trust models in autonomic (self-*) environments by addressing inter and intracomponent trust.

Professional Services •

Technical Program Committee (TPC) Membership

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International Conference on Mobile Ad-hoc and Sensor Networks (MSN) 2013 International Conference on Communications (ICC) 2015 Workshop on Dynamic SOcial Networks (DySON) ICC 2015 Ad-Hoc Now 2015

Peer Reviewer



Journal Reviewer (Indicative List):

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IEEE Transactions on Vehicular Technology (TVT) IEEE Communications Letters (LCOMM) IEEE Network Magazine IEEE Wireless Communications Magazine (WCM) Computer Communications Elsevier (COMCOM) International Journal of Sensor Networks Future Generation Computer Systems Elsevier ACM Transactions on Information Systems

Conference Reviewer (Indicative List):

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IEEE Transactions on Parallel and Distributed Systems (TPDS)

GLOBECOM, ICC, WCNC, PIMRC, ISCC, MASS, Ad Hoc Now, GC, SoftCOM

Local Arrangements Co-Chair Ad-Hoc Now 2015, June 29 - July 02, 2015, Athens, Greece

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Professional Aliations • •

Member of the Technical Chamber of Greece (TEE), March

2010

Institute of Electrical and Electronics Engineers (IEEE), October

- today

2009

- today

Indicative Graduate Courses' List Probability Theory, Stochastic Processes, Numerical Analysis, Stochastic Dierential Equations, Quality Control, Survival Analysis, Stochastic and Deterministic Optimization, Network Optimization, Wireless Ad hoc Networks, Mobile Telecommunications, Randomized Algorithms, Computational Statistics and Stochastic Optimization

Computer Skills Programming:

MATLAB, C, JAVA, R, Tcl, LaTeX, Assembly (8085/8086-88, AVR)

Web Technologies:

HTML, XML, JSP, Servlets, Tomcat

Databases:

MySQL

Operating Systems:

Windows, Linux

Networks:

Ethereal, NS2

Statistics:

Minitab, R

Microsoft Oce:

ECDL Certication

Languages • •

Greek (Mother Tongue) English - Fluent (Full professional prociency, Certicate of Prociency, University of Cambridge, University of Michigan)

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French - Advanced (Full working prociency, DALF C1)

Publications Journal Articles

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E. Stai, V. Karyotis and S. Papavassiliou, A Hyperbolic Analytics Framework for Big Network Data and their Applications, under major revision in the IEEE Network Magazine, May 2015.

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E. Stai, V. Karyotis and S. Papavassiliou, Analysis and Control of Information Diusion Dictated by User Interest in Generalized Networks, under minor revision in the Journal of Computational Social Networks,

Springer.

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E. Stai, M. Loulakis and S. Papavassiliou, Cross-Layer Design of Wireless Multihop Networks over Stochastic Channels with Time-Varying Statistics", IEEE Transactions on Wireless Communications, DOI: 10.1109/TWC.2015.2462845, July 2015.

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E. Stai, S. Papavassiliou and J. S. Baras, Performance-Aware Cross-Layer Design in Wireless Multihop Networks via a Weighted Backpressure Approach, IEEE/ACM Transactions on Networking, DOI: 10.1109/TNET.2014.2360942, October 2014.

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E. Stai and S. Papavassiliou, User Optimal Throughput-Delay Trade-o in Multihop Networks under NUM Framework, IEEE Communications Letters, Vol. 18, No. 11, pp. 1999-2002, November 2014.

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E. Anifantis, E. Stai, V. Karyotis and S. Papavassiliou, Exploiting Social Features for Improving Cognitive Radio Infrastructures and Social Services via Combined MRF and Back-pressure Cross-layer Resource Allocation", Journal of Computational Social Networks, Springer, Vol. 1, No. 1, pp. 1-27, October 2014.

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E. Stai, V. Karyotis and S. Papavassiliou, Exploiting Socio-Physical Network Interactions via a Utilitybased Framework for Resource Management in Mobile Social Networks, IEEE Wireless Communications

Magazine, Vol. 21, No. 1, pp. 10-17, February 2014.

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E. Stai, V. Karyotis and S. Papavassiliou, Topology Enhancements in Wireless Multi-hop Networks: A Topdown Approach, IEEE Transactions on Parallel and Distributed Systems, Vol. 23, No. 7, pp. 1344-1357, July 2012.

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E. Stai, V. Karyotis and S. Papavassiliou, A Socially-driven Topology Improvement Framework with Applications in Content Distribution and Trust Management, Journal of Internet Services and Applications, Springer, Vol. 2, No. 2, pp. 113-127, September 2011.

Books

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V. Karyotis, E. Stai and S. Papavassiliou, Evolutionary Dynamics of Complex Communications Networks",

CRC Press - Taylor & Francis Group, Boca Raton, FL, USA, October 2013.

Book Chapters

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E. Stai, V. Karyotis, G. Katsinis, E.E. Tsiropoulou, S. Papavassiliou, A Hyperbolic Big Data Analytics Framework within Complex and Social Networks", Invited Book Chapter in handbook Big Data in Complex

and Social Networks", editors: My T. Thai, Weili Wu, and Hui Xiong, CRC Press, Taylor & Francis Group, (ISBN 9781498726849), 2015.

Conference Proceedings

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E. Stai, V. Karyotis and S. Papavassiliou, On the Impact of Network Evolution on NUM Resource Allocation Problems in Wireless Multihop Networks", in Proc. of the International Conference on Ad-Hoc Networks

and Wireless (ADHOC-NOW), Vol. 9143, Lecture Notes in Computer Science, pp 62-75, Athens, Greece, June 2015.

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E. Stai, V. Karyotis and S. Papavassiliou, User Interest Dictated Information Diusion over Generalized Networks", in Proc. of the IEEE International Conference on Communications (ICC), Workshop on Dynamic

SOcial Networks (DySON), London, UK, June 2015.

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E. Stai, M. Loulakis and S. Papavassiliou, Congestion & Power Control of Wireless Multihop Networks over Stochastic LTF Channels", in Proc. of the IEEE Wireless Communications and Networking Conference

(WCNC), New Orleans, USA, March 2015.

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E. Anifantis, E. Stai, V. Karyotis and S. Papavassiliou, MRF Cross-layer Resource Allocation Approach with Back-pressure Features for QoS in Dynamic Social and Cognitive Communications", in Proc. of the

IEEE INFOCOM Workshop on Dynamic SOcial Networks (DySON), pp. 323-328, Toronto, Canada, April 2014.

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E. Stai, S. Papavassiliou and J. S. Baras, A Coalitional Game Based Approach for Multi-Metric Optimal Routing in Wireless Networks, in Proc. of the 24th Annual IEEE Int'l Symposium on Personal, Indoor and

Mobile Radio Communications (PIMRC), pp. 1935-1939, London, UK, September 2013.

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E. Stai, J. S. Baras and S. Papavassiliou, Social Networks over Wireless Networks, in Proc.

of the 51st

IEEE Conference on Decision and Control (CDC), pp. 2696-2703, Maui, Hawaii, December 2012.

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E. Stai, J. S. Baras and S. Papavassiliou, A Class of Backpressure Algorithms for Networks Embedded in Hyperbolic Space With Controllable Delay-Throughput Trade-o , in Proc. of the 15th ACM International

Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWiM), pp. 15-22, Paphos, Cyprus, October 2012.

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E. Stai, J. S. Baras and S. Papavassiliou, Throughput-delay trade-o in Wireless Networks via Greedy Hyperbolic Embedding, in Proc. of the 20th International Symposium on Mathematical Theory of Networks

and Systems (MTNS), University of Melbourne, Australia, July 2012.

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E. Stai, V. Karyotis and S. Papavassiliou, Wireless Multi-hop Network Topology Control Optimization and Trade-o Analysis, in Proc. of the 35th IEEE Sarno Symposium 2012, pp. 1-6, Newark, New Jersey, USA, May 2012.

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E. Stai, V. Karyotis and S. Papavassiliou, Enhancing Trust Establishment in Wireless Multi-hop Networks via Preferential Attachment, in Proc.

of the 16th IEEE Symposium on Computers and Communications

(ISCC), pp. 630-635, Corfu, Greece, June 2011.

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E. Stai, V. Karyotis and S. Papavassiliou, Enhanced Service Provisioning in Wireless Multi-hop Networks via Socially-driven Inverse Topology Control, in Proc. of the 4th IEEE Workshop on Enabling the Future

Service-Oriented Internet: Towards Socially-Aware Networks, of IEEE Global Communications Conference (GLOBECOM), pp. 1378-1382, Miami, Florida, USA, December 2010.

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E. Stai, V. Karyotis and S. Papavassiliou, Socially-inspired Topology Improvements in Wireless Multi-hop Networks, in Proc. of the Social Networks Workshop of IEEE International Conference on Communications

(ICC), pp. 1-6, Cape Town, South Africa, May 2010.

Other Publications

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E. E. Tsiropoulou, V. Karampali, P. van Leeuwen, K. Rapantzikos, S. Kafetzoglou, E. Stai, Multimedia Content Annotations for Rapid Exploitation in Multi-screen Environments - MECANEX", to appear at the

IBC Conference, Amsterdam, Netherlands, September 2015.

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