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I'm a Professor of Computer Science at Wellesley College, studying online social media, primarily related to the propagation of information and misinformation, prediction of political events, and in developing tools that help users evaluate the trustworthiness of information. In particular, with my Wellesley colleagues and students, we have been studying the problem of propaganda and online misinformation since 2002.

More information about my current work is in "Separating Truth From Lies" and in my Publications, News coverage and Video/Audio pages.

In the past, I have done research in Visualization, Parallel Computing, Image Dithering and CS Education.

Current Positions:

I studied Mathematics at the University of Athens and Computer Science at Brown. I received my M.Sc. and Ph.D. in Computer Science from Dartmouth, and have been a visiting scientist at MIT, the Sydney University in Australia, and at Harvard. Regarding professional associations, I'm a senior member of the ACM, and a member of LACS, IEEE Computer Society, SIGWEB, SIGCSE and SIGACT's Electronic Publication Board. I also serve on the program committees for the WWW (Social Networks Track), AAAI-Web, WEBIST, ICWI and ICWSM conferences.

In the past, I was a member of the Computing Research Association's Board of Directors, and the Chief Technology Officer of a biotech company, and lead it to gain FDA approval for computerized tests measuring the symptoms of mental disorders, and a Research Associate at the Developmental Biopsychiatry Research Program at McLean Hospital, Harvard Medical School.

My research has been supported by the National Science Foundation, Brachman-Hoffman Fellowships, and Wellesley College.

On a personal note, I maintain the website metaxa.net which hosts the book "History of the Metaxa Family from 1081 until 1864" (in Greek) by Epaminondas Metaxas, MD (Athens, 1893)