Background

For a complete education and academic background, click here.

Professional Experience

    Mar 2016 — Present Postdoctoral Researcher, NLP group, Idiap Research Institute (link)
    Jun 2014 — Dec 2014 Visiting Scholar, DVMM lab, Columbia University (link)
    Feb 2012 — Mar 2016 Research Assistant, NLP group, Idiap Research Institute (link)
    May 2009 — Oct 2011 Software Engineer, i-Sieve Technologies (link)
    Nov 2007 — Nov 2011 Software Engineer, Endysis Group (link)
    Mar 2007 — Jul 2007 Software Developer, Optimor Labs (link)

Talks

  • “Labeling Text in Several Languages with Multilingual Hierarchical Attention Networks”, Swisstext, 2017
    Web Slides Video
  • “Deep Learning for NLP: Multilingual Word Sequence Modeling”, HLT course at EPFL, 2016
    Web Slides
  • “Human versus Machine Attention in Document Classification: A Dataset with Crowdsourced Annotations”, EMNLP, 2016
    Web Slides
  • “Deep Learning for NLP: Word Representation Learning”, HLT course at EPFL, 2016
    Web Slides
  • “Multilingual Visual Sentiment Concept Matching”, ICMR 2016 (prepared)
    Web Slides
  • “Explicit Document Modeling using Multiple-Instance Learning”, Data Science group at Swisscom, 2016
    Web Slides
  • “Weighted Multiple Instance Learning for Text Regression Tasks”, SMLD 2015
    Web Slides
  • “Explaining the Stars: Weighted Multiple-Instance Learning for Aspect-Based Sentiment Analysis”, EMNLP 2014 (prepared)
    Web Slides
  • “Learning Aspects and Ratings with Multiple-Instance Regression from Text”, SMLD 2013
    Web Slides
  • “Combining Content with User Preferences for TED Lecture Recommendation”, CBMI 2013
    Web Slides
  • “A System for Up-to-date Opinion Retrieval and Mining in the Web”, CiCling 2013
    Web Slides
  • “Intoduction to Recommender Systems”, HLT course at EPFL, 2012
    Web Slides

Projects

  • SUMMA - Scalable Understanding of Multilingual Media (link)
    European Union, Feb 2016 — Present
  • HYBRID - Hybrid Recommender System for a University Social Network (link)
    TheArk Foundation, Aug 2015 — Jan 2016
  • AROLES - Automatic Recommendation of Lectures and Snipets (link)
    SNSF, Nov 2014
  • inEvent - Accessing Dynamic Networked Multimedia Events (link)
    European Union, Feb 2012 — Oct 2014

Awards & Honors

  • Best multimodal paper award "Multilingual Visual Sentiment Concept Matching"
    Nikolaos Pappas, Mercan Topkara, Miriam Redi, Brendan Jou, Tao Chen, Hongyi Liu, Shih-Fu Chang
    ACM International Conference on Multimedia Retrieval, 2016
  • PhD student paper award "Adaptive Sentiment-Aware One-Class Collaborative Filtering"
    Nikolaos Pappas and Andrei Popescu-Belis
    Idiap Research Institute, 2015
  • 1st prize on video lecture annotation and search challenge
    Idiap's Natural Language Processing group
    ACM Multimedia Conference, 2013
  • Award for top graduates of Greek Polytechnic Schools
    TEE - Technical Chamber of Greece, 2012
  • Scholarship for the third Academic Year
    ΙΚΥ - Greek State Scholarships Foundation, 2006
  • Scholarship for the first Academic Year
    ΙΚΥ - Greek State Scholarships Foundation, 2004

Service

  • Expert Systems with Applications
  • IEEE Transactions on Multimedia
  • Information Sciences Journal
  • Neural Networks Journal
  • LREC 2018
  • EMNLP 2017
  • ACMMM 2017
  • ACL 2017
  • ICMR 2017
  • COLING 2016
Location