This page contains my academic achievements in reverse chronological order. Essentially here you can find stuff which I consider interesting. Unfortunately, some of them are available only in Greek. For a complete list of my publications you should try the following page.

Ph.D

I started working on my Ph.D [pdf | ppt] on 2006 and got my diploma on 2010. My research focused on distributed knowledge discovery and particularly on the effective and efficient preprocessing of data by means of distributed dimensionality reduction. The latter is getting more and more important as the rate of data generation and distribution significantly outperforms our ability to explore and analyse it. The contribution of my work is captured in the following list:

• A novel algorithm, FEDRA, was introduced. FEDRA is a dimensionality reduction algorithm which poses minimum time and space requirements and is ideal for large datasets of particularly high cardinality and dimensionality [src and more].
• Inspired by the nature of landmark based dimensionality reduction algorithms, the distributed adaptation of FEDRA has been developed and its underlying methodology was extended in order to derive a framework for the decentralization of any landmark based dimensionality reduction algorithm
• A distributed non linear dimensionality reduction algorithm, the Distributed Isomap, was also proposed, which to the best of my knowledge comprises the first of this kind [src and more].
• Finally, X-SDR has been introduced, an open-source tool that enables the integration and evaluation of any dimensionality reduction algorithm.

M.Sc

During my master studies I undertook various courses that changed my perception regarding the role and operation of an Information System in the context of an organization. Here you can find four essays which I consider extremely interesting.

• P2P Web Search - Master Thesis (in Greek)
• Software Patents (in collaboration with Takis Bougiouris - in Greek)
• Computer Forensics (in collaboration with Alexandra Lepeniotou and Nikos Loutas - in Greek)
• Shredding XML Data (in Greek)