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Esa Olavi Hyytiä - Professor
–
School of Engineering and Natural Sciences
Esa Olavi Hyytiä
Íslenska
Professor
Location
Gróska / Gr-308
Phone
525-4603
Email
esa [at] hi.is
Unit
Faculty of Industrial Engineering, Mechanical Engineering and Computer Science
Website
http://hi.is/~esa
ORCID site
https://orcid.org/0000-0001-8453-6926
Research portal – Esa Olavi Hyytiä
Under construction throughout the autumn semester 2023
Courses 2023 - 2024
TÖL204F - Seminar for MS-Students
TÖL602G - Computer Science Seminar for Undergraduates
TÖL301G - Formal Languages and Computability
TÖL103M - Programming Projects on Internet of Things
TÖL104M - Network Measurements and Analysis
Education
2004
,
D.Sc. (Tech.)
,
Helsinki University of Technology
,
Electrical Engineering
1998
,
M.Sc. (Tech.)
,
Helsinki University of Technology
,
Engineering Physics
Professional Experience
2018 -
,
Professor,
University of Iceland
2015 -
2018,
Associate Professor,
University of Iceland
2009 -
2015,
Research Fellow,
Aalto University, Finland
2006 -
2009,
Senior Researcher,
Forschungszentrum Telekommunikation Wien (ftw.), Austria
2005 -
2006,
Postdoc Researcher,
Norwegian University of Science and Technology (NTNU), Norway
2001 -
2005,
Senior Research Scientist,
Helsinki University of Technology, Finland
1998 -
2001,
Research Scientist,
Helsinki University of Technology
Published works
2020
Performance Degradation in Parallel-Server Systems with Shared Resources
ACM International Conference Proceeding Series
On value functions for FCFS queues with batch arrivals and general cost structures
Performance Evaluation
Toward designing cost-optimal policies to utilize IaaS clouds with online learning
IEEE Transactions on Parallel and Distributed Systems
2019
A little redundancy goes a long way: Convexity in redundancy systems
Performance Evaluation
Controlling Queues with Constant Interarrival Times
Proceedings of the 31st International Teletraffic Congress, ITC 2019
Last in line
Operations Research Letters
Simulation and performance evaluation of mission critical dispatching systems
Performance Evaluation
2018
Dispatching discrete-size jobs with multiple deadlines to parallel heterogeneous servers
Systems Modeling: Methodologies and Tools
Applying reinforcement learning to basic routing problem
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Evaluating rare events in mission critical dispatching systems
Proceedings of the 30th International Teletraffic Congress, ITC 2018
Practical opportunistic content dissemination performance in dense network segments
Computer Communications
Dynamic Control of Running Servers
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
2017
Towards Designing Cost-Optimal Policies to Utilize IaaS Clouds with Online Learning
Proceedings - 2017 IEEE International Conference on Cloud and Autonomic Computing, ICCAC 2017
Value (Generating) Functions for the M
X
/G/1 Queue
Proceedings of the 29th International Teletraffic Congress, ITC 2017
Beyond shortest queue routing with heterogeneous servers and general cost functions
ACM International Conference Proceeding Series
Dispatching fixed-sized jobs with multiple deadlines to parallel heterogeneous servers
ValueTools 2016 - 10th EAI International Conference on Performance Evaluation Methodologies and Tools
Dispatching fixed-sized jobs with multiple deadlines to parallel heterogeneous servers
Performance Evaluation
Meeting soft deadlines in single- and multi-server systems
Proceedings of the 28th International Teletraffic Congress, ITC 2016
Scheduling for efficiency and fairness in systems with redundancy
Performance Evaluation
On the sensitivity of geo-based content sharing to location errors
2017 13th Annual Conference on Wireless On-Demand Network Systems and Services, WONS 2017 - Proceedings
2016
On Round-Robin routing with FCFS and LCFS scheduling
Performance Evaluation
On search and content availability in opportunistic networks
Computer Communications
Routing jobs with deadlines to heterogeneous parallel servers
Operations Research Letters
Analysis of the indexing gain when searching in spontaneous wireless networks
2016 12th Annual Conference on Wireless On-Demand Network Systems and Services, WONS 2016 - Conference Proceedings
Queueing with redundant requests: exact analysis
Queueing Systems
Opportunistic content dissemination performance in dense network segments
Proceedings of the Annual International Conference on Mobile Computing and Networking, MOBICOM
Search in digital pockets: Retrieving remote content in mobile opportunistic networks
IEEE Wireless Communications
2015
Reducing latency via redundant requests: Exact analysis
Performance Evaluation Review
Offload (only) the right jobs: Robust offloading using the Markov decision processes
Proceedings of the WoWMoM 2015: A World of Wireless Mobile and Multimedia Networks
Fairness through Linearly Increasing Holding Costs in Systems of Parallel Servers with Setup Delays
Proceedings - 2015 27th International Teletraffic Congress, ITC 2015
Analysis of hop limit in opportunistic networks by static and time-aggregated graphs
IEEE International Conference on Communications
Two hops or more: On hop-limited search in opportunistic networks
MSWiM 2015 - Proceedings of the 18th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems
2014
Searching a needle in (linear) opportunistic networks
MSWiM 2014 - Proceedings of the 17th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems
Task assignment in a heterogeneous server farm with switching delays and general energy-aware cost structure
Performance Evaluation
Value driven load balancing
Performance Evaluation
Efficient neighbor discovery in mobile opportunistic networking using mobility awareness
2014 6th International Conference on Communication Systems and Networks, COMSNETS 2014
Energy-aware job assignment in server farms with setup delays under LCFS and PS
2014 26th International Teletraffic Congress, ITC 2014
2013
Characterizing content sharing properties for mobile users in open city squares
2013 10th Annual Conference on Wireless On-Demand Network Systems and Services, WONS 2013
Lookahead actions in dispatching to parallel queues
Performance Evaluation
Criticality condition for information floating with random walk of nodes
Performance Evaluation
To split or not to split: Selecting the right server with batch arrivals
Operations Research Letters
Seeker-assisted information search in mobile clouds
MCC 2013 - Proceedings of the 2nd, 2013 ACM SIGCOMM Workshop on Mobile Cloud Computing
Evaluating (Geo) content sharing with the ONE simulator
MobiWac 2013 - Proceedings of the 11th ACM International Symposium on Mobility Management and Wireless Access, Co-located with ACM MSWiM 2013
Criticality of large delay tolerant networks via directed continuum percolation in space-time
Proceedings - IEEE INFOCOM
Round-Robin routing policy: Value functions and mean performance with job -and server-specific costs
VALUETOOLS 2013 - 7th International Conference on Performance Evaluation Methodologies and Tools
2012
Size- and state-aware dispatching problem with queue-specific job sizes
European Journal of Operational Research
Non-myopic vehicle and route selection in dynamic DARP with travel time and workload objectives
Computers and Operations Research
Floating information with stationary nodes
2012 10th International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks, WiOpt 2012
On the value function of the M/G/1 FCFS and LCFS queues
Journal of Applied Probability
Minimizing slowdown in heterogeneous size-aware dispatching systems
Performance Evaluation Review
Continuum percolation threshold for permeable aligned cylinders and opportunistic networking
IEEE Communications Letters
Continuum Percolation Threshold for Permeable Aligned Cylinders and Opportunistic Networking
Ieee Communications Letters
2011
Floating content for probabilistic information sharing
Pervasive and Mobile Computing
When does content float? Characterizing availability of anchored information in opportunistic content sharing
Proceedings - IEEE INFOCOM
BeachNet: Propagation-based information sharing in mostly static networks
ACM International Conference Proceeding Series
Why urban mass demand responsive transport?
2011 IEEE Forum on Integrated and Sustainable Transportation Systems, FISTS 2011
Energy-aware dispatching in parallel queues with on-off energy consumption
Conference Proceedings of the IEEE International Performance, Computing, and Communications Conference
Dispatching problem with fixed size jobs and processor sharing discipline
Proceedings of the 2011 23rd International Teletraffic Congress, ITC 2011
Floating content: Information sharing in urban areas
2011 IEEE International Conference on Pervasive Computing and Communications, PerCom 2011
M/M/1-PS queue and size-aware task assignment
Performance Evaluation
2010
Key escrow schemes with sliding window for privacy-aware anomaly detection system
ACM International Conference Proceeding Series
Hybrid secret key escrow mechanisms as counters
2009 Proceedings of the 1st International Workshop on Security and Communication Networks, IWSCN 2009
Simulation of a large scale dynamic pickup and delivery problem
SIMUTools 2010 - 3rd International ICST Conference on Simulation Tools and Techniques
Congestive collapse and its avoidance in a dynamic dial-a-ride system with time windows
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
A stochastic model for a vehicle in a dial-a-ride system
Operations Research Letters
2009
On the optimality of field-line routing in massively dense wireless multi-hop networks
Performance Evaluation
Detection and tracking of skype by exploiting cross layer information in a live 3G network
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
2008
Near-optimal load balancing in dense wireless multi-hop networks
4th EURO-NGI Conference on Next Generation Internet Networks - Proceedings
2007
Random waypoint mobility model in cellular networks
Wireless Networks
On optimality of single-path routes in massively dense wireless multi-hop networks
MSWiM'07: Proceedings of the Tenth ACM Symposium on Modeling, Analysis, and Simulation of Wireless and Mobile Systems
On traffic load distribution and load balancing in dense wireless multihop networks
Eurasip Journal on Wireless Communications and Networking
Optimal degree distribution for LT codes with small message length
Proceedings - IEEE INFOCOM
2006
Connectivity properties of random waypoint mobility model for ad hoc networks
IFIP International Federation for Information Processing
Spatial node distribution of the random waypoint mobility model with applications
IEEE Transactions on Mobile Computing
Traffic matrix estimation in a dense multihop wireless network
Proceedings of ISCN'06: 7th International Symosium on Computer Networks
A model for TCP congestion control capturing the correlations in times between the congestion events
2006 2nd Conference on Next Generation Internet Design and Engineering, NGI 2006
A Markovian waypoint mobility model with application to hotspot modeling
IEEE International Conference on Communications
On load balancing in a dense wireless multihop network
2006 2nd Conference on Next Generation Internet Design and Engineering, NGI 2006
2005
Random waypoint model in n-dimensional space
Operations Research Letters
Traffic load in a wireless multihop network
PE-WASUN'05 - Proceedings of the Second ACM International Workshop on Performance Evaluation of Wireless Ad Hoc, Sensor, and Ubiquitous Networks
2004
Linear program formulation for routing problem in OBS networks
Proceedings - International Symposium on Computers and Communications
2003
Maximization of Single Hop traffic with Greedy Heuristics
Proceedings of the IASTED International Conference on Wireless and Optical Communications
2002
Adaptive importance sampling in routing and wavelength assignment problem
European Transactions on Telecommunications
2001
Dynamic routing and wavelength assignment using first policy iteration, inhomogeneous traffic case
Performance and Qos of Next Generation Networking
2000
Dynamic routing and wavelength assignment using first policy iteration
IEEE Symposium on Computers and Communications - Proceedings
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