Hi, my name is Dimitrios
Welcome to my tiny corner in the Web
Tell Me More


In reverse chrnonological order. Also, my Google Scholar & my dblp


  • Moshe Lichman, Dimitrios Kotzias and Padhraic Smyth 2016. Personalized Location Models with Adaptive Mixtures. SIGSPATIAL (2016), 339–346. [ paper ] [ project ]


  • Dimitrios Kotzias, Misha Denil, Nando de Freitas and Padhraic Smyth 2015. From Group to Individual Labels using Deep Features. ACM SIGKDD (2015). [ paper ] [ slides ] [ project ]
  • Dimitrios Kotzias, Theodoros Lappas and Dimitrios Gunopulos 2015. Home is where your friends are: Utilizing the social graph to locate twitter users in a city . Information Systems . (2015), . [ paper ] [ project ]


  • Dimitrios Kotsakos, Theodoros Lappas, Dimitrios Kotzias, Dimitrios Gunopulos, Nattiya Kanhabua and Kjetil Nørvåg 2014. A Burstiness-aware Approach for Document Dating. Proceedings of the 37th International ACM SIGIR (New York, NY, USA, 2014), 1003–1006. [ paper ] [ project ]
  • Dimitrios Kotzias, Theodoros Lappas and Dimitrios Gunopulos 2014. Addressing the Sparsity of Location Information on Twitter. EDBT/ICDT Workshops (2014), 339–346. [ paper ] [ slides ] [ project ]
  • Dimitrios Kotzias, Misha Denil, Phil Blunsom and Nando de Freitas 2014. Deep Multi-Instance Transfer Learning. NIPS Deep Learning Workshop. (2014). [ paper ] [ poster ] [ project ]


This is an abstracted timeline of my academic life so far. You can find an extensive CV here

Some News

We won the Yelp Dataset Challenge 2015 with our work with Multi-Instance Learning!

I co-organised a workshop at NIPS 2015 on Learning and privacy with incomplete data

  • September 2014 -

    PhD student at University of California, Irvine

    I am a second year PhD student at UCI working with Padhraic Smyth in Machine Learning.

  • Summer 2016

    Google Intern SWE

    I interned with the Google Cloud Platform ML Team

  • Summer 2015

    Microsoft Intern - Bing

    I worked as a Data Science Intern at Microsoft, working with the Bing Ads team on session data

  • September 2013 - September 2014

    Masters in Computer Science, University of Oxford

    I earned my Master’s with Distinction from the University of Oxford specializing in machine learning. I had the amazing opportunity to have Nando De Freitas as my thesis advisor.

  • January 2013 - September 2013

    Researcher at the University of Athens

    I was part of the Insight Project in the KDD Lab at the University of Athens doing research in Social Network Analysis with Dimitrios Gunopulos

  • Summer 2012

    Intern at Atypon Systems Inc

    I worked on a machine learning project aimed at assigning labels from the MeSH Taxonomy in scientific medical papers.

  • September 2007 - June 2012

    Bachelor's in Finance,
    Deree College

    I earned my bachelor’s degrees in Accounting and Finance with a concentration on Finance from the American College of Greece with high distinction.

  • September 2007 - September 2011

    Bachelor's in Computer Science, University of Athens

    I earned my degree in Computer Science from the University of Athens with highest distinction - excellent, with a double focus on Theoretical Computer Science and Databases & Systems.

  • Me in a Greek Island, Summer 2014


... the ones that I can talk about

Multi-Instance Learning

Deep Learning, Semi-Supervised Learning

Social Network Analysis

Twitter Data, MOOC's, Location Data

Burstyness for Document Dating

Time-series Analysis, Data Mining


I also like Debating, I was a member of the Deree Debating team for 5 years competing and organizing events.
I was coaching high school students at Moraitis School for 4 awesome years.
I am a member of the Oxford Union.


Moraitis School

I had the privilege of being the forensics coach of some very bright students in Moraitis School. This involved teaching speech, argumentation, logical thinking and rhetoric skills as well as creative skills for acting and interpreting literature. This has been one of the most fulfilling experiences in my life and one of the driving reasons for my decision to join academia. I am constantly impressed by ingenuity these kids can showcase.
Recently we won a few tournaments :-)


Deree College, Oxford Union

I have taken part in many tournaments both in Greece and abroad. I was also competing at the Oxford Union whilst in Oxford.
Some of the tournaments I participated are: Panhellenic Forensics Tournament (semi-finals and top 10 speakers), Deree College Invitationals (finals and top 10 speakers), Leiden Open 2007, Prague Open 2008, Cambridge IV 2009, World University Debating Championship 2009, Vienna Open 2010 (semi-finals and top 10 speakers), Paris Open 2012


Moraitis School, Deree College, Oxford Union

As a student member of the Deree Debating Club I was in the Organizing Committee of many debating tournaments: Athens Open 2009-2011 (Treasurer), Oxford IV 2013 (Tab), Moraitis Cup 2010 - 2013 (Tournament Director, Tab Master - pic), Many Invitational Deree College Tournaments (Tournament Director), Panhellenic Forensics Tournament (Debate Tab master 2010 - 2013)

Debating has been one of the most fun and beneficial experiences of my life. It helped me remain relevant to current events and learn how to properly argue. I highly recommend you devote some time to it, if you get a chance.


You can contact me at dkotzias at ics [] uci [] edu; you can guess what '[]' represents. Or find me in one of the social networks below.