I am currently a Ph.D. candidate in Computer Science at Columbia University. My advisor is Prof. Luis Gravano and I am member of the Database Research Group. I have also worked closely with Prof. Kathy McKeown from the Data Science Institute.
The overarching goal of my research is to develop computational methods, tools, and systems needed to help analyze and transform into actionable knowledge large collections of evolving data (i.e., data that change over time, such as time series, time-varying measurements, and sequences of streams). To achieve this goal, my work focuses on designing scalable, accurate, and data-aware algorithms; and on building data-driven systems that harness principled methods to solve real-world problems.
In my dissertation research, I have been investigating the design of a unified computational framework that exploits patterns in data sequences to facilitate how we process, organize, store, query, retrieve, and analyze evolving data. Per above, my work embraces a variety of tools from: (i) data management; (ii) data mining and machine learning; and (iii) artifficial intelligence.
Selected Achievements, Awards, and Fellowships
2016Research coverage by Popular Press
Our research on "Screening for Pancreatic Cancer Using Signals From Web Search Logs" was covered by New York Times, Washington Post, The Guardian, MIT Technology Review, and Fortune; and our research on "Social Dynamics of Language Change in Online Networks" was covered by FastCompany.
2016Nomination for the "ISSI Paper of the Year Award"
Our work on "Predicting the Impact of Scientific Concepts Using Full Text Features" is one of the ten papers selected across papers published in 2015 or 2016 for consideration for the "ISSI Paper of The Year Award," which "recognizes high quality research in the field of Scientometrics and Informetrics." (Final award will be announced in late 2017.)
2015ACM SIGMOD Research Highlight Award
Our paper "k-Shape: Efficient and Accurate Clustering of Time Series" was selected across papers published in premier database conferences for the "ACM SIGMOD Research Highlight Award," which recognizes research papers that "address an important problem, represent a definitive milestone in solving the problem, and have the potential of significant impact."
2014Onassis Foundation Fellow
Recognition for Greek students with outstanding academic record.
Recent selected referred publications in conferences and journals