Prof. Dr. Felix Naumann

Konstantina Lazaridou

Phone: +49 331 5509 292
Email:  konstantina.lazaridou(at)hpi.de


Research Interests

  • Data mining & Machine Learning
  • Information Retrieval
  • News and Social Media Analysis
  • Opinion and Sentiment Analysis
  • Web Mining
  • Graph Mining


  • Information Retrieval and Web Search (Lecture, WS 2015/2016)
  • Graph Mining (Lecture, WS 2016/2017)
  • Recommender Systems (Seminar, SS 2017)
  • Text Mining (Seminar, SS 2017)


Master theses

  • Classification of German Newspaper Comments by Godde Christian, 2016
  • Large-scale Topic-based Analysis of Political Discussions on Twitter, Jaqueline Pollak, 2017



  • Discovering Biased News Articles Leveraging Multiple Human Annotations. Lazaridou, Konstantina; Löser, Alexander; Mestre, Maria; Naumann, Felix (2020). 1268–1277.
  • Where in the World Is Carmen Sandiego? Detecting Person Locations via Social Media Discussions. Lazaridou, Konstantina; Gruetze, Toni; Naumann, Felix in 10th (2018).
  • Identifying Media Bias by Analyzing Reported Speech. Lazaridou, Konstantina; Krestel, Ralf; Naumann, Felix (2017).
  • What was Hillary Clinton doing in Katy, Texas?. Gruetze, Toni; Krestel, Ralf; Lazaridou, Konstantina; Naumann, Felix (2017).
  • Classification of German Newspaper Comments. Godde, Christian; Lazaridou, Konstantina; Krestel, Ralf in CEUR Workshop Proceedings (2016). (Vol. 1670) 299–310.
  • Identifying Political Bias in News Articles. Lazaridou, Konstantina; Krestel, Ralf in International Conference on Theory and Practice of Digital Libraries (2016). (Vol. 12)