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I am an Athene Young Investigator (Independent Research Group head) at the Department of Electrical Engineering and Information Technology at the TU Darmstadt. Since Feb. 2016 I also head the Adaptive Overlay Communications group at KOM.
Previously, I was Post-Doctoral Researcher with the Department of Computer Science at the University of Warwick, U.K., and at the University of Massachusetts Amherst, USA.
8 Private Questions (in german)
Research Interests
My research focus lies on stochastic modeling and optimization of networked service systems. To this end, I develop methods and techniques in the areas of Queuing Theory, Network Calculus and Probability. I apply these analytical tools for the design and quantitative analysis and control of various service systems such as communication networks, industrial processes, (general) storage systems, multimedia and IoT. Since 2016, I have been working on the optimization of adaptive communication systems within the collaborative research center MAKI. My work there is related to the application fields of Software-defined Networking, Multimedia and Caching. Recently, I have been also working on Blockchain based distributed applications.
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Selected Publications
- W. R. KhudaBukhsh, B. Alt, S. Kar, A. Rizk, H. Koeppl: Collaborative Uploading in Heterogeneous Networks: Optimal and Adaptive Strategies. IEEE INFOCOM (2018)
- D. Stohr, A. Frömmgen, A. Rizk, M. Zink, R. Steinmetz, W. Efelsberg: Where are the Sweet Spots? A Systematic Approach to Reproducible DASH Player Comparisons. ACM Multimedia (2017)
- A. Frömmgen, A. Rizk, T. Erbshäußer, M. Weller, B. Koldehofe, A. Buchmann, R. Steinmetz: A Programming Model for Application-defined Multipath TCP Scheduling, ACM/IFIP/USENIX Middleware 2017 - Best paper award
- W. R. KhudaBukhsh, A. Rizk, A. Frömmgen, H. Koeppl: Optimizing Stochastic Scheduling in Fork-Join Queuing Models: Bounds and Applications. IEEE INFOCOM (2017)
- S. Subramanya, A. Rizk, D. E. Irwin: Transient Guarantees: Maximizing the Value of Idle Cloud Capacity. ACM SIGHPC Supercomputing (2016)
- A. Rizk, F. Poloczek, F. Ciucu: Stochastic bounds in Fork-Join queueing systems under full and partial mapping. Queueing Systems 83(3-4): 261-291 (2016)
- Z. Bozakov, A. Rizk, D. Bhat, M.Zink: Measurement-based Flow Characterization in Centrally Controlled Networks. IEEE INFOCOM (2016)
- A. Rizk, F. Poloczek, F. Ciucu: Computable Bounds in Fork-Join Queueing Systems. ACM SIGMETRICS (2015): 335-346
- D. Dietrich, A. Rizk, P. Papadimitriou: Multi-Provider Virtual Network Embedding With Limited Information Disclosure. IEEE Transactions on Network and Service Management 12(2): 188-201 (2015)
- M. Fidler, A. Rizk: A Guide to the Stochastic Network Calculus. IEEE Communications Surveys and Tutorials 17(1): 92-105 (2015)
Full list of publications at:
Publications @ KOM
Research Projects
Current Projects as PI
- SPINE: Stochastic Performance Bounds for Information-Centric Communication Networks, DFG
- SFB MAKI - Model-based Transition Planning and Prediction (Project B4), DFG
- Stochastic Methods for the Analysis of Parallelized Communication Systems (AYI), TU Darmstadt
Current Projects in my group (non-PI)
- SFB MAKI - Personalized Video Composition and Distribution (Project C3), DFG
- SENDATE - Secure Networking for a Data Center Cloud in Europe (Planets), BMBF
- E-Finance Lab at the House of Finance (Layer 1)
Previous Projects
- Joint Power Saving Strategies for Mobile Stations and Multimedia Caches
