Welcome to my website

I am an associate professor at the Faculty of Electrical Engineering and Computer Science at the Leibniz University Hannover and member of the L3S Research Center. My research lies in the areas of Data Mining and Machine Learning and can be summarized as learning over complex data (like high-dimensional, multi-view, with limited labels) and data streams.

Prior to joining LUH, I was a post-doctoral researcher at the Ludwig-Maximilians-University (LMU) in Munich, Germany under the supervision of Prof. Hans-Peter Kriegel. I joined the group in 2010 as a post-doctoral fellow of the Alexander von Humboldt Foundation. I obtained my PhD from the Department of Informatics of University of Piraeus, Greece, under the supervision of Prof. Yannis Theodoridis. I hold a diploma in Computer Engineering & Informatics and an MSc in Computer Science, both from the Computer Engineering & Informatics Department (CEID), University of Patras, Greece.

Latest news:
-> Our paper ``An Evaluation of Data Stream Clustering Algorithms'' has been accepted at Statistical Analysis and Data Mining journal.
-> April 2018: Our paper ``Enriching Lexicons with Ephemeral Words for Sentiment Analysis in Social Streams'' was accepted at WIMS 2018 in Novi Sad, Serbia.
-> I am organizing the Dagstuhl Perspectives Workshop "10 years of Web Science: Closing the Loop", which will take place on 24-29 June 2018.
-> April 13, 2018: I will give a talk on the regional conference on ``Maschinelles Lernen für die Intelligente Produktion'' Hannover.
-> February 2018: Our paper ``Dealing with Bias via Data Augmentation in Supervised Learning Scenarios'' was accepted at BIAS - Bias in Information, Algorithms, and Systems workshop in Sheffield, UK.
-> Our paper ``TweetsKB: A Public and Large-Scale RDF Corpus of Annotated Tweets'' was accepted at ESWC 2018.
-> February 2018: Our paper ``Significance and limitations of stable oxygen isotope ratios in the apatite phosphate of archaeological vertebrate finds for provenance analysis in an alpine reference region'' was accepted at Archaeometry journal.
-> January 2018: Our paper ``Data augmentation for dealing with low sampling rates in NILM'' was accepted at NILM 2018.
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