I am a Ph.D. student at UWaterloo advised by Prof. Semih Salihoglu. I am a member of the Data Systems Group and I work on Graphflow, an active graph database.

Email / Résumé / Github / Twitter

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Research Interests

I am interested in various models and applications of data systems. My current work focuses on optimizations for query execution and development of auxiliary data structures to evaluate graph database queries efficiently.

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Publications [Google Scholar]

• Optimizing Subgraph Queries by Combining Binary and Worst-Case Optimal Joins
  A. Mhedhbi, S. Salihoglu. PVLDB, August 2019.
• The Ubiquity of Large Graphs and Surprising Challenges of Graph Processing: Extended Survey
  S. Sahu, A. Mhedhbi, S. Salihoglu, J. Lin, M. T. Özsu. VLDBJ, 2019.
• The Ubiquity of Large Graphs and Surprising Challenges of Graph Processing (Best Paper Award)
  S. Sahu, A. Mhedhbi, S. Salihoglu, J. Lin, M. T. Özsu. PVLDB, August 2018.
• Graphflow: An Active Graph Database (Demonstration Track)
  C. Kankanamge, S. Sahu, A. Mhedhbi, J. Chen, and S. Salihoglu. SIGMOD, May 2017.

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Professional & Research Experiences

• Technology Analyst Intern, Corporate & Investment Banking
  Société Générale (May 2016 - Aug. 2016)


• Software Engineering Intern, Research & Development
  Ericsson (Sep. 2015 - Mar. 2016)


• Research Assistant, Optical Networks-on-chip (ONoC)
  Advisor: Prof. Jelena Trajkovic
  Concordia University (May 2015 - Aug. 2015)


• Research Intern, Signal Processing
  Advisors: Prof. William E. Lynch & Prof. Glenn Cowan
  Thales Group & Concordia University (Nov. 2013 - Nov. 2014)


• Software Engineering Intern, Android Team
  Immersion Corporation (Sep. 2013 - Dec. 2013, May 2014 - Aug. 2014)

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Teaching Assistanships

(F = Fall, W = Winter, S = Summer)

• CS 330 - Management Information Systems
• University of Waterloo (W19 & S19)
• CS 348 - Introduction to Database Management
• University of Waterloo (F18)
• CS 338 - Computer Applications in Business: Databases
• University of Waterloo (S17, F17, W18 & S18)
• CS 115 - Introduction to Computer Science 1
• University of Waterloo (F16 & W17)
• ELEC/COEN 390 - Engineering Team Design Project
• Concordia University (F15 & W16)

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Awards and Scholarships

• Cheriton Symposium Poster Presentation - 1st Place, University of Waterloo, 2018
• David R. Cheriton Scholarship, University of Waterloo, 2017-2018
• SIGMOD 2017 Travel Award, SIGMOD, 2017
• Graduate Entrance Scholarship, University of Waterloo, 2016-2017
• Senior Engineering Design Project Award, Concordia University, 2015-2016
• Junior Engineering Design Project Award, Concordia University, 2014-2015
• Dean's List, Engineering & Computer Science, Concordia University, 2012-2014