Awards and Grants

  • Jun2016

    Outstanding Reviewer Award

    Twenty-fifth International Joint Conference on Artificial Intelligence (IJCAI-16)

  • Apr2016

    Senior Member Promotion


  • Oct2015

    Lagrange Prize

    CRT Foundation

  • Jan2015

    Outstanding Reviewer Award

    Eighth ACM International WSDM Conference (WSDM 2015)

  • Nov2014

    Best Paper for Years 2011-14

    Management Science, ISS/INFORMS

  • Nov2014

    Best Paper Award

    Second AAAI Conference on Human Computation and Crowdsourcing (HCOMP 2014)

  • Nov2014

    Best Paper Award Runner-up

    INFORMS 2014 Data Mining Student Competition

  • Dec2012

    Google Focused Research Award

    "Never Failing Goggles", $1,500,000, with Serge Belongie and Pietro Perona, Google

  • Dec2012

    Best Theme Paper Award

    International Conference on Information Systems (ICIS 2012)

  • Nov2011

    Google Research Award

    Designing Ranking Systems for Products on Search Engines Using Economic Theory Models for Improving Online Shopping, $60,000, with Anindya Ghose, Google

  • Apr2011

    Best Paper Award

    20th International World Wide Web Conference

  • Jul2010

    Google Research Award

    Collaborative Adaptive Data Sharing, $70,000, with Vagelis Hristidis, Google

  • May2010

    NYU Research Challenge Grant

    Comprehensive and High Quality Monitoring of the Web for Academic Citations, $18,000, with , New York University

  • Apr2010

    NYU-Poly Seed Grant

    Understanding the structure of evolving textural collections, $30,000, with Torsten Suel, NYU-Poly

  • Mar2009

    Marketing Science Institute Grant:

    The economic impact of user-generated content: Combining text mining with demand estimation in the hotel industry, $6,500, with Anindya Ghose, Marketing Science Institute

  • Aug2008

    Best Paper Award Runner Up

    ACM International Conference on Knowledge Management and Data Mining (KDD 2008)

  • Jun2007

    NET Institute Summer Grant

    Deriving the Pricing Power of Product Features by Mining Consumer Reviews, $4,500, with Anindya Ghose, NET Institute

  • Mar2007

    Microsoft Virtual Earth Award

    Local Search for Hotel and Restaurants Using Econometrics Spatial Data and Image Classification, $35,000, with Anindya Ghose, Microsoft Research

  • Jan2007

    CAREER Award

    Towards a Text-Centric Database Management System, IIS-0643846, $499,957, with , National Science Foundation

  • Jun2006

    Best Paper Award

    ACM International Conference on Management of Data (SIGMOD 2006)

  • Jan2006

    Microsoft Live Labs Search Award

    Combining Econometric and Text Mining Approaches for Measuring the Effect of Online Information Exchange, $37,000, with Anindya Ghose, Microsoft Live Labs

  • Aug2005

    Departmental Nominee, ACM Doctoral Dissertation Award

    Computer Science Department, Columbia University

  • Apr2005

    Best Paper Award

    IEEE International Conference on Data Engineering (ICDE 2005)

  • Oct2004

    Award for Excellence in Teaching

    School of Engineering, Columbia University

  • Feb2002

    Graduate Fellowship

    DIMACS (Center for Discrete Mathematics and Theoretical Computer Science)

  • Jun2001

    Best Paper Award Finalist

    ACM+IEEE Joint Conference on Digital Libraries (JCDL 2001)

  • May2001

    Ph.D. Teaching Award of Excellence

    Computer Science Department, Columbia University

  • Jan2001

    Honorary Distinction Award

    Technical Chamber of Greece

  • Sep2000

    Award for Excellence in Teaching

    School of Engineering, Columbia University

  • Jan2000

    Honorary Distinction Award

    Technical Chamber of Greece

  • Sep1999


    Empeirikio Foundation

  • May1999

    Five Fellowships from Greek Scholarship Foundation

  • Jan1994

    Member of the Greek Olympiad team

    26th International Chemistry Olympiad (Oslo 1994)

  • Jan1994

    Gold Medal

    8th National Greek Competition in Chemistry