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Research

40.    Triangle Evacuation of 2 Agents in the Wireless Model & the Power of Choosing a Starting Point
With Woojin Jang
Journal of Computer and System Sciences (2025
)
Journal version (external link) 

39.    The Fagnano Triangle Patrolling Problem
With Somnath Kundu and Paweł Prałat
Discrete Mathematics & Theoretical Computer Science (2025
)
Journal version (external link) 

38.    Weighted Group Search on the Disk & Improved Lower Bounds for Priority Evacuation
With Xin Wang
Journal of Computer and System Sciences (2025)
Journal version (external link) 

37.    Makespan Trade-offs for Visiting Triangle Edges
With Somnath Kundu and Paweł Prałat
Discrete Mathematics & Theoretical Computer Science (2024)
Journal version (external link) 

36.    Overcoming Probabilistic Faults in Disoriented Linear Search
With Nikos Giachoudis and Evangelos Kranakis
Theoretical Computer Science (2024)
Journal version (external link) 

35.    Improved Collision-Free Multi-Axis Tool-Path for Additive Manufacturing
With Rahnuma Islam Nishat, Yeganeh Bahoo, Robert Hedrick, R. Jill Urbanic
Computer-Aided Design and Applications (2024)
 (PDF file) Journal version (external link) 

34.    Collision-Free Multi-Axis Tool-Path for Additive Manufacturing
With Rahnuma Islam Nishat, Yeganeh Bahoo, Robert Hedrick, R. Jill Urbanic
Computer-Aided Design and Applications (2023)
 (PDF file) Journal version (external link) 

33.    Optimal Circle Search Despite the Presence of Faulty Robots
With Evangelos Kranakis, Nikos Leonardos, Aris Pagourtzis and Ioannis Papaioannou
Information Processing Letters (2023)
Journal version (external link) 

32.    Evacuating from ell-p Unit Disks in the Wireless Model
With Somnath Kundu, Sean Leizerovich and Jesse Lucier
Theoretical Computer Science (2022)
Journal version (external link) 

31.    Algorithms for p-faulty Search on a Half-Line
With Anthony Bonato, Calum MacCury and Paweł Prałat
Algorithmica (2022)
Journal version (external link) 

30.    Weighted Group Search on a Line & Implications to the Priority Evacuation Problem
With Jesse Lucier
Theoretical Computer Science (2022)
Journal version (external link) 

29.    The Unit Acquisition Number of Binomial Random Graphs
With Somnath Kundu and Paweł Prałat
Electronic Journal of Combinatorics (2021)
Journal version (external link)  - Also on arXiv:2006.13294 (external link)  (preprint, 2020)

28.    Photon Beam Energy Dependent Single-Arc Volumetric Modulated Arc Optimization
With Shadab Momin, James L Gräfe and Rao F Khan
Physica Medica (2021)
Journal version (external link) 

27.    Search on a Line by Byzantine Robots
With Jurek Czyzowicz, Evangelos Kranakis, Danny Krizanc, Lata Narayanan, Jurek Opatrny and Sunil Shende
International Journal of Foundations of Computer Science (2021)
Journal version (external link) 

26.    Time-Energy Tradeoffs for Evacuation by Two Robots in the Wireless Model
With Jurek Czyzowicz, Ryan Killick, Evangelos Kranakis, Danny Krizanc, Manuel Lafond, Lata Narayanan, Jaroslav Opatrny and Sunil Shende
Theoretical Computer Science (2020)
Journal version (external link) 

25.    A Multi-Objective Optimization Problem on Evacuating 2 Robots from the Disk in the Face-to-Face Model; Trade-offs Between Worst-Case and Average-Case Analysis
With Huda Chuangpishit and Preeti Sharma
Information, Artificial Intelligence (2020), Special Issue: Distributed Systems and Mobile Computing
Journal version (external link) 

24.    Priority Evacuation from a Disk: The case of at Least 4 Robots
With Jurek Czyzowicz, Ryan Killick, Evangelos Kranakis, Danny Krizanc, Lata Narayanan, Jaroslav Opatrny and Sunil Shende
Theoretical Computer Science (2020)
Journal version (external link) 

23.    Evacuating Robots from a Disk Using Face-to-Face Communication
With Jurek Czyzowicz, Evangelos Kranakis, Lata Narayanan, Jarda Opatrny and Birgit Vogtenhuber
Discrete Mathematics & Theoretical Computer Science (2020)
Journal version (external link) 

22.    Lift & Project Systems Performing on the Partial Vertex Cover Polytope
With Andy (Jia) Jiang, Edward Lee, Astrid A. Olave, Ian Seong and Twesh Upadhyaya
Theoretical Computer Science (2020)
Journal version (external link) 

21.    Priority Evacuation from a Disk: the case of n=1,2,3
With Jurek Czyzowicz, Ryan Killick, Evangelos Kranakis, Danny Krizanc, Lata Narayanan, Jaroslav Opatrny and Sunil Shende
Theoretical Computer Science (2019)
Journal version (external link) 

20.    Symmetric Rendezvous With Advice: How to Rendezvous in a Disk
With Jay Griffiths and Yuval Yakubov
Journal of Parallel and Distributed Computing (2019)
Journal version (external link) 

19.    Simultaneous Optimization of Mixed Photon Energy Beams in Volumetric Modulated Arc Therapy
With Shadab Momin, James L Gräfe and Rao F Khan
Medical Physics (2019)
Journal version (external link) 

18.    Search-and-Fetch with 2 Robots on a Disk: Wireless and Face-to-Face Communication Models
With George Karakostas and Evangelos Kranakis
Discrete Mathematics & Theoretical Computer Science (2019)
Journal version (external link) 

17.    Treasure Evacuation with One Robot on a Disk
With George Karakostas and Evangelos Kranakis
Theoretical Computer Science (2020)
Journal version (external link) 

16.    Lift-and-Project Methods for Set Cover and Knapsack
With Eden Chlamtac and Zac Friggstad
Algorithmica (2018)
Journal version (external link) 

15.    Know When to Persist: Deriving Value from a Stream Buffer
With George Karakostas, Evangelos Kranakis and Danny Krizanc
Theoretical Computer Science (2017)
Journal version (external link) 

14.    Searching with Advice: Robot Fence-Jumping
With Evangelos Kranakis and Alexandra Steau
Journal of Information Processing (2017)
Journal version (external link) 

13.    Better Balance by Being Biased: A 0.8776-Approximation for Max Bisection
With Per Austrin and Siavosh Benabbas
ACM Transactions on Algorithms (TALG), (2016)
Journal version (external link) 

12.    Evacuating Two Robots from Multiple Unknown Exits in a Circle
With Jurek Czyzowicz, Stefan Dobrev, Evangelos Kranakis and Fraser MacQuarrie
Theoretical Computer Science (2016)
Journal version (external link) 

11.    Stable Marriage with General Preferences
With Linda Farczadi and Jochen Könemann
Theory of Computing Systems (2016)
Journal version (external link) 

10.    On Integrality Ratios for Asymmetric TSP in the Sherali-Adams Hierarchy
With Joseph Cheriyan, Zhihan Gao and Sahil Singla
Mathematical Programming Series A (2016)
Journal version (external link) 

9.    The Beachcombers' Problem: Walking and Searching with Mobile Robots
With Jurek Czyzowicz, Leszek Gasieniec, Evangelos Kranakis and Fraser MacQuarrie
Theoretical Computer Science (2015)
Journal version (external link) 

8.    Complexity of Barrier Coverage with Relocatable Sensors in the Plane
With S. Dobrev, S. Durocher, M. Eftekhari, E. Kranakis, D. Krizanc, L. Narayanan, J. Opatrny, S. Shende, J. Urrutia
Theoretical Computer Science (2015)
Journal version (external link) 

7.    Excuse Me! or The Courteous Theatregoers' Problem
With Evangelos Kranakis and Danny Krizanc
Theoretical Computer Science (2015)
Journal version (external link) 

6.    Black-Box Reductions for Cost-Sharing Mechanism Design
With Chaitanya Swamy
Games and Economic Behavior (2013)
Journal version (external link) 

5.    Social Exchange Networks With Distant Bargaining
With George Karakostas, Jochen Könemann and Zuzanna Stamirowska
Theoretical Computer Science (2013)
Journal version (external link) 

4.    SDP Gaps from Pairwise Independence
With Siavosh Benabbas, Avner Magen and Madhur Tulsiani
Theory of Computing (2012)
Journal version (external link) 

3.    Integrality Gaps of 2-o(1) for Vertex Cover SDPs in the Lovasz-Schrijver Hierarchy
With Avner Magen, Toniann Pitassi and Iannis Tourlakis
SIAM Journal on Computing (2010)
Journal version (external link) 

2.    Random Maximal Independent Sets and the Unfriendly Theater Seating Arrangement Problem
With Evangelos Kranakis and Danny Krizanc
Discrete Mathematics (2009)
Journal version (external link) 

1.    Distributed Dynamic Storage in Wireless Networks
With Evangelos Kranakis, Ricardo Marcelin-Jimenez, Sergio Rajsbaum, Jorge Urrutia
International Journal of Distributed Sensor Networks (2005)
Journal version (external link) 

56.    Online Drone Coverage of Targets on a Line
With Stefan Dobrev, Evangelos Kranakis, Danny Krizanc, Lata Narayanan, Jaroslav Opatrny, Denis Pankratov and Sunil Shende
37th International Workshop on Combinatorial Algorithms (IWOCA 2026) 
Also on arXiv:2604.02491 (external link)  (preprint, 2026)

55.    Spirals and Beyond: Competitive Plane Search with Multi-Speed Agents
With Caleb Jones and Matthew Madej
17th Latin American Theoretical Informatics Symposium (LATIN 2026)
Also on arXiv:2508.10793 (external link)  (preprint, 2025)

54.    Optimal Average Disk-Inspection via Fermat's Principle
43rd International Symposium on Theoretical Aspects of Computer Science (STACS 2026)
 (PDF file) Conference version (external link)  - Also on arXiv:2509.06334 (external link)  (preprint, 2025)

53.    Multi-Agent Disk Inspection
With James Conley
32nd International Colloquium On Structural Information and Communications Complexity (SIROCCO 2025)
Conference version (external link)  - Also on arXiv:2411.15391 (external link)  (preprint, 2024)

52.    Multi-Agent Search-Type Problems on Polygons
With Caleb Jones and Jesse Lucier
50th International Conference on Current Trends in Theory and Practice of Computer Science (SOFSEM 2025)
Conference version (external link)  - Also on arXiv:2406.19495 (external link)  (preprint, 2024)

51.    Weighted Group Search on the Disk & Improved Lower Bounds for Priority Evacuation
With Xin Wang
35th International Workshop on Combinatorial Algorithms (IWOCA 2024)
Conference version (external link)  - Also on arXiv:2406.19490 (external link)  (preprint - 2024)

50.    The Fagnano Triangle Patrolling Problem
With Somnath Kundu and Paweł Prałat
25th International Symposium on Stabilization, Safety, and Security of Distributed Systems (SSS 2023)
Track D: Dynamic, Mobile and Nature-Inspired Computing Mobile Agents
Conference version (external link)  - Also on arXiv:2307.13153 (external link)  (preprint, 2023)

49.    Overcoming Probabilistic Faults in Disoriented Linear Search
With Nikos Giachoudis and Evangelos Kranakis
30th International Colloquium on Structural Information and Communication Complexity (SIROCCO 2023)
Conference version (external link, opens in new window)  - Also on arXiv:2303.15608 (external link, opens in new window)  (preprint, 2023)

48.    Improved Collision-Free Multi-Axis Tool-Path for Additive Manufacturing
With Rahnuma Islam Nishat, Yeganeh Bahoo, Robert Hedrick, R. Jill Urbanic.
20th Annual International Computer-Aided Design Conference (CAD 2023)
 (PDF file) Conference version (external link) 

47.    Evacuation from a Disk for Robots with Asymmetric Communication
With Nikos Giachoudis and Evangelos Kranakis
33rd International Symposium on Algorithms and Computation (ISAAC 2022)
Conference version (external link) 

46.    Triangle Evacuation of 2 Agents in the Wireless Model
With Woojin Jang
18th International Symposium on Algorithms and Experiments for Wireless Sensor Networks (ALGOSENSORS 2022)
Conference version (external link)  - Also on arXiv:2209.08544 (external link)  (preprint, 2022)

45.    Collision-Free Multi-Axis Tool-Path for Additive Manufacturing
With Rahnuma Islam Nishat, Yeganeh Bahoo, Robert Hedrick, R. Jill Urbanic
19th Annual International Computer-Aided Design Conference (CAD 2022)
 (PDF file) Conference version (external link) 

44.    Evacuating from ell-p Unit Disks in the Wireless Model
With Somnath Kundu, Sean Leizerovich, and Jesse Lucier
17th International Symposium on Algorithms and Experiments for Wireless Sensor Networks (ALGOSENSORS 2021)
Conference version (external link)  - Also on arXiv:2108.02367 (external link)  (preprint 2021)

43.    Makespan Trade-offs for Visiting Triangle Edges
With Somnath Kundu and Paweł Prałat
32nd International Workshop on Combinatorial Algorithms (IWOCA 2021)
Conference version (external link)  - Also on arXiv:2105.01191 (external link)  (preprint, 2021)

42.    The Bike Sharing Problem
With Jurek Czyzowicz, Ryan Killick, Evangelos Kranakis, Danny Krizanc, Lata Narayanan, Jaroslav Opatrny and Dennis Pankratov
15th International Conference and Workshops on Algorithms and Computation (WALCOM 2021)
Conference version (external link)  - Also on arXiv:2006.13241 (external link)  (preprint, 2020)

41.    Weighted Group Search on a Line
With Jesse Lucier
16th International Symposium on Algorithms and Experiments for Wireless Sensor Networks (ALGOSENSORS 2020)
Conference version (external link) 

40.    Probabilistically Faulty Searching on a Half-Line
With Anthony Bonato, Calum MacCury and Paweł Prałat
14th Latin American Theoretical Informatics Symposium (LATIN 2020)
Conference version (external link)  - Also on arXiv:2002.07797 (external link)  (preprint, 2020)

39.    Lower Bounds for Shoreline Searching with 2 or More Robots
With Sumi Acharjee, Somnath Kundu and Akshaya Srinivasan
23rd International Conference on Principles of Distributed Systems (OPODIS 2019)
Conference version (external link)  - Also on arXiv:2001.04311 (external link)  (preprint, 2020)

38.    Optimal Circle Search Despite the Presence of Faulty Robots
With Evangelos Kranakis, Nikos Leonardos, Aris Pagourtzis and Ioannis Papaioannou
15th International Symposium on Algorithms and Experiments for Wireless Sensor Networks (ALGOSENSORS 2019)
Conference version (external link) 

37.    Time-Energy Tradeoffs for Evacuation by Two Robots in the Wireless Model
With Jurek Czyzowicz, Ryan Killick, Evangelos Kranakis, Danny Krizanc, Manuel Lafond, Lata Narayanan, Jaroslav Opatrny and Sunil Shende
26th International Colloquium on Structural Information and Communication Complexity (SIROCCO 2019)
Conference version (external link)  - Also on arXiv:1905.06783 (external link)  (preprint, 2019)

36.    Energy Consumption of Group Search on a Line
With Jurek Czyzowicz, Ryan Killick, Evangelos Kranakis, Danny Krizanc, Manuel Lafond, Lata Narayanan, Jaroslav Opatrny and Sunil Shende
46th International Colloquium on Automata, Languages and Programming (ICALP 2019)
Conference version (external link)  - Also on arXiv:1904.09714 (external link)  (preprint, 2019)

35.    Bargaining in Networks with Socially-Aware Agents
With Somnath Kundu
9th EAI International Conference on Game Theory for Networks (GameNets 2019)
Conference version (external link) 

34.    Average Case - Worst Case Tradeoffs for Evacuating 2 Robots from the Disk in the Face-to-Face Model
With Huda Chuangpishit and Preeti Sharma
14th International Symposium on Algorithms and Experiments for Wireless Sensor Networks (ALGOSENSORS 2018)
Conference version (external link)  - Also on arXiv:1807.08640 (external link)  (preprint, 2018)

33.    Symmetric Rendezvous With Advice: How to Rendezvous in a Disk
With Jay Griffiths and Yuval Yakubov
25th International Colloquium on Structural Information and Communication Complexity (SIROCCO 2018)
Conference version (external link)  - Also on arXiv:1805.03351 (external link)  (preprint, 2018)

32.    Priority Evacuation from a Disk Using Mobile Robots
With Jurek Czyzowicz, Ryan Killick, Evangelos Kranakis, Danny Krizanc, Lata Narayanan, Jaroslav Opatrny and Sunil Shende
25th International Colloquium on Structural Information and Communication Complexity (SIROCCO 2018)
Conference version (external link)  - Also on arXiv:1805.03568 (external link)  (preprint, 2018)

31.    God Save the Queen
With Jurek Czyzowicz, Ryan Killick, Evangelos Kranakis, Danny Krizanc, Lata Narayanan, Jaroslav Opatrny and Sunil Shende
9th International Conference on Fun With Algorithms (FUN 2018)
Conference version (external link)  - Also on arXiv:1804.06011 (external link)  (preprint, 2018)

30.    Patrolling a Path-Connected Set of Points with Non-Uniform Visitation-Frequency Requirements
With Huda Chuangpishit, Jurek Czyzowicz, Leszek Gasieniec, Tomasz Jurdzinski and Evangelos Kranakis
44th International Conference on Current Trends in Theory and Practice of Computer Science (SOFSEM 2018)
Conference version (external link)  - Also on arXiv:1710.00466 (external link)  (preprint, 2017)

29.    Querying with Uncertainty
With Huda Chuangpishit and Evangelos Kranakis
13th International Symposium on Algorithms and Experiments for Wireless Networks (ALGOSENSORS 2017)
Conference version (external link) 

28.    Evacuation from a Disc in the Presence of a Faulty Robot
With Jurek Czyzowicz, Maxime Godon, Evangelos Kranakis, Danny Krizanc, Wojciech Rytter and Michal Wlodarczyk
24th International Colloquium on Structural Information and Communication Complexity (SIROCCO 2017)
Conference version (external link) 

27.    Search-and-Fetch with 2 Robots on a Disk: Wireless and Face-to-Face Communication Models
With George Karakostas and Evangelos Kranakis
6th International Conference on Operations Research and Enterprise Systems (ICORES 2017)
Conference version (external link)  - Also on arXiv:1611.10208 (external link)  (preprint, 2016)

26.    Search on a Line by Byzantine Robots
With Jurek Czyzowicz, Evangelos Kranakis, Danny Krizanc, Lata Narayanan, Jurek Opatrny and Sunil Shende
27th International Symposium on Algorithms and Computation (ISAAC 2016)
Conference version (external link)  - Also on arXiv:1611.08209 (external link)  (preprint, 2016)

25.    Search-and-Fetch with One Robot on a Disk
With George Karakostas and Evangelos Kranakis
12th International Symposium on Algorithms and Experiments for Wireless Sensor Networks (ALGOSENSORS 2016)
Conference version (external link) 

24.    Searching with Advice: Robot Fence-Jumping
With Evangelos Kranakis, and Alexandra Steau
28th Canadian Conference on Computational Geometry (CCCG 2016)
 (PDF file) Conference version (external link)  - Also on arXiv:1606.08023 (external link)  (preprint, 2016)

23.    Know When to Persist: Deriving Value from a Stream Buffer
With George Karakostas, Evangelos Kranakis, and Danny Krizanc
11th International Conference on Algorithmic Aspects of Information and Management (AAIM 2016)
Conference version (external link)  - Also on arXiv:1604.03009 (external link)  (preprint, 2016)

22.    Distributed Patrolling with Two-Speed Robots (and an Application to Transportation)
With Jurek Czyzowicz, Evangelos Kranakis, Fraser MacQuarrie, and Dominik Pajak
5th International Conference on Operations Research and Enterprise Systems (ICORES 2016)
Conference version (external link) 

21.    Evacuating Two Robots from Multiple Unknown Exits in a Circle
With Jurek Czyzowicz, Stefan Dobrev, Evangelos Kranakis and Fraser MacQuarrie
17th International Conference on Distributed Computing and Networking - Distributed Computing Track (ICDCN 2016)
Conference version (external link) 

20.    Evacuating Robots from a Disk Using Face-to-Face Communication
With Jurek Czyzowicz, Evangelos Kranakis, Lata Narayanan, Jarda Opatrny and Birgit Vogtenhuber
8th International Conference on Algorithms and Complexity (CIAC 2015)
Conference version (external link)  - Also on arXiv:1501.04985 (external link)  (preprint, 2015)

19.    Lift & Project Systems Performing on the Partial Vertex Cover Polytope
With Edward Lee
34th Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2014)
Conference version (external link)  - Also on arXiv:1409.6365 (external link)  (preprint, 2014)

18.    The Multi-source Beachcombers' Problem
With Jurek Czyzowicz, Leszek Gasieniec, Evangelos Kranakis and Fraser MacQuarrie
10th International Symposium on Algorithms and Experiments for Sensor Systems, Wireless Networks and Distributed Robotics (ALGOSENSORS 2014)
Conference version (external link) 

17.    Stable Marriage with General Preferences
With Linda Farczadi and Jochen Könemann
7th International Symposium on Algorithmic Game Theory (SAGT 2014)
Conference version (external link)  - Also on arXiv:1407.1853 (external link)  (preprint, 2014)

16.    The Beachcombers' Problem: Walking and Searching with Mobile Robots
With Jurek Czyzowicz, Leszek Gasieniec, Evangelos Kranakis and Fraser MacQuarrie
21st International Colloquium on Structural Information and Communication Complexity (SIROCCO 2014)
Conference version (external link)  - Also on arXiv:1304.7693 (external link)  (preprint, 2013)

15.    Excuse Me! or The Courteous Theatregoers' Problem
With Evangelos Kranakis, Danny Krizanc
7th International Conference on Fun With Algorithms (FUN 2014)
Conference version (external link)  - Also on arXiv:1403.1988 (external link)  (preprint, 2014)

14.    Network Bargaining with General Capacities
With Linda Farczadi and Jochen Könemann
21st European Symposium on Algorithms (ESA 2013)
Conference version (external link)  - Also on arXiv:1306.4302 (external link)  (preprint, 2013)

13.    On Integrality Ratios for Asymmetric TSP in the Sherali-Adams Hierarchy
With Joseph Cheriyan, Zhihan Gao and Sahil Singla
40th International Colloquium on Automata, Languages and Programming (ICALP 2013)
Conference version (external link)  - Also on arXiv:1405.0945 (external link)  (preprint, 2014)

12.    Lift-and-Project Methods for Set Cover and Knapsack
With Eden Chlamtac and Zac Friggstad
17th Workshop on Algorithms and Data Structures (WADS 2013)
Conference version (external link)  - Also on arXiv:1204.5489 (external link)  (preprint, 2012)

11.    Social Exchange Networks With Distant Bargaining
With George Karakostas, Jochen Könemann and Zuzanna Stamirowska
19th Annual International Computing and Combinatorics Conference (COCOON 2013)
Conference version (external link) 

10.    Complexity of Barrier Coverage with Relocatable Sensors in the Plane
With S. Dobrev, S. Durocher, M. Eftekhari, E. Kranakis, D. Krizanc, L. Narayanan, J. Opatrny, S. Shende, J. Urrutia
8th International Conference on Algorithms and Complexity (CIAC 2013)
Conference version (external link) 

9.    Better Balance by Being Biased: A 0.8776-Approximation for Max Bisection
With Per Austrin and Siavosh Benabbas
24th Symposium on Discrete Algorithms (SODA 2013)
Conference version (external link, opens in new window)  - Also on arXiv:1205.0458 (external link)  (preprint, 2012)

8.    Black-Box Reductions for Cost-Sharing Mechanism Design
With Chaitanya Swamy
23rd Symposium on Discrete Algorithms (SODA 2012)
Conference version (external link) 

7.    Tight Integrality gap for Sherali-Adams SDPs for Vertex Cover
With Siavosh Benabbas, Siuon Chan and Avner Magen
31st Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2011)
Conference version (external link)  - Also in Electronic Colloquium on Computational Complexity (ECCC), TR10-169 (external link, opens in new window)  (preprint, 2011)

6.    On the Tightening of the Standard SDP for Vertex Cover with l1 Inequalities
With Avner Magen and Iannis Tourlakis
29th Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2009)
Coonference version (external link) 

5.    Optimal Sherali-Adams Gaps from Pairwise Independence
With Avner Magen and Madhur Tulsiani
12th Intl. Workshop on Approximation Algorithms for Combinatorial Optimization Problems (APPROX 2009)
Conference version (external link)  - Also in Electronic Colloquium on Computational Complexity (ECCC), TR096-061 (external link)  (preprint, 2009)

4.     Complexity and Algorithms for Well Structured k-SAT Instances
With Periklis Papakonstantinou
11th International Conference on Theory and Applications of Satisfiability Testing (SAT 2008)
Conference version (external link) 

3.    Vertex Cover Resists SDPs Tightened by Local Hypermetric Inequalities
With Avner Magen and Iannis Tourlakis
13th Conference on Integer Programming and Combinatorial Optimization (IPCO 2008)
Conference version (external link) 

2.    Computability of Models for Sequence Assembly
With Paul Medvedev, Gene Myers and Michael Brudno
7th Workshop on Algorithms in Bioinformatics (7th Workshop on Algorithms in Bioinformatics (WABI 2007)
Conference version (external link) 

1.    Integrality Gaps of 2-o(1) for Vertex Cover SDPs in the Lovasz-Schrijver Hierarchy
With Avner Magen, Toniann Pitassi and Iannis Tourlakis
48th IEEE Symposium on Foundations of Computer Science (FOCS 2007)
Conference version (external link)  - Also in Electronic Colloquium on Computational Complexity (ECCC), TR06-152 (external link)  (preprint, 2006)

2.    Group Search and Evacuation
With Jurek Czyzowicz and Evangelos Kranakis
Chapter in book (external link)  “Distributed Computing by Mobile Entities” (2019) 

1.    Patrolling with Mobile Agents
With Jurek Czyzowicz and Evangelos Kranakis
Chapter in book (external link)  “Distributed Computing by Mobile Entities” (2019) 

 

2.    Efficient Algorithms for Solving Hypergraphic Steiner Tree Relaxations in Quasi-Bipartite Instances
With Isaac Fung, Jochen Könemann and Malcolm Sharpe
arXiv:1202.5049 (external link)  (preprint, 2011)

1.    Expansion Fools the Sherali-Adams System: Compromising Local and Global Arguments
With Avner Magen.
 (PDF file) Technical Report CSRG-587 (external link)  University of Toronto (preprint, 2008)

2.    Integrality Gaps for Strong Linear Programming and Semidefinite Programming Relaxations
PhD thesis (external link) , Department of Computer Science, University of Toronto
Supervisors: Avner Magen (external link)  and Toniann Pitassi (external link)  (2010)

1.    Unfairness in Online Scheduling
MSc thesis, Department of Mathematics, University of Athens
Supervisor: Elias Koutsoupias (external link)  (2004)