Recently, I participated in the first hackathon organized by Missing Maps together with Doctors Without Borders, and other supporters. The mission of the event was to kick-start some early ideas and develop them into proof-of-concept solutions that might help in the main effort of Missing Maps Continue Reading →

Let’s try to think about what decides which information is useful for us at any given moment. For sure there are many factors coming into play such as the location where we happen to be (work, airport, etc.), the current date and time (e.g., Christmas, late at night), the people accompanying us (friends, colleagues, …), or the activity we are engaged in (e.g., driving, filling out tax return form). Continue Reading →

They say that the only thing nobody can strip you off is your knowledge and experiences. And surely, it is the shared knowledge that took humanity so far. Lately, though, with the explosion of information it becomes harder and harder to find the owners of certain knowledge. And that is the reason why expertise retrieval (ER) was born as a sub-discipline of IR. Continue Reading →


Recently I was trying to learn something about random graph generators and I ended up reading about interesting properties of real graphs. I describe some of them in this post, but first, let me give a short intro on the graph generators.

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This blog post was originally written for a series of articles by ZEEF curators. In this case, it was a contribution on behalf of my ZEEF Data Science page. I’m providing 7 essential resources & tips, trying to predict which information related to data science the readers might find interesting.

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This year I participated in the European summer school in IR which took place in wonderful Thessaloníki. The whole event was perfectly organized, lecturers gave really interesting speeches and last but not least, I met a lot of people sharing the same interests with me. Event though I was taking notes, I wanted to go over some of the slides and posters presented during the school and keep them somewhere for future reference. Having found them, why not to list them all in one place?

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Dear friends,

I’ve decided to start this blog to spread a word about my work, interests, news and other hopefully interesting things. Stay tuned and check this blog time to time. Meanwhile you can find out about my research or hobbies.