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Short Bio

I am a Research Fellow at Harvard's SEAS & IQSS jointly with the Lazer Lab at the Network Science Institute of Northeastern University. My research mainly involves modeling and analysis of Social Network Dynamics based on various social signals ranging from language use to patterns of online activity. I use Random Graphs, Complex Networks Analysis, Machine Learning and Natural Language Processing in the context of social interaction. I'm interested in large scale-data driven modeling of the processes in which language is shaping and shaped-by social dynamics. In particular, I'm interested in modeling social coordination, influence and contagion in social networks and in the political domain.

I will be joining the Department of Information Systems Engineering at Ben Gurion University as an Associate Professor (Senior Lecturer) in the academic year of 2016/7.

In my graduate studies I was working with Prof. Ari Rappoport at the CS department in the Hebrew University, mainly on Content Analysis of Social Networks. I studied various aspects of user generated content, such as Amazon product reviews and Twitter tweets, trying to predict the helpfulness/quality of reviews, predict the popularity of memes and extract indirect emotions such as sarcasm to allow more accurate sentiment analysis.

I was also working on computational aspects of natural language semantics and its application to non-native speakers and on Language modelling of product reviews, books in particular.

Community service (for a full list check my CV):


In the industry I was working as a SW engineer at the Intel corp. Jerusalem, doing R&D in the ICGJ center, as a product manager at NST (a VoIP startup company), as a scientific intern at Yahoo! Research, and in the Machine Learning and Data Mining group at IBM research (I was working on that).

My 15 minutes of fame:
Our sarcasm detection algorithm was selected by Time Magazine as one of the
50 Best Inventions of 2010. (Here is pop sci talk [HEB])

Research interests

Keywords: {social networks, information diffusion, social contagion and influence, exponential random graph models (ERGM), computational linguistics, natural language processing, language evolution, language coordination, sentiment analysis, lexical semantics, language acquisition, indirect speech (acts), discourse modeling, pragmatics, information retrieval, data mining}

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My citations on Google scholar.

Note: Conferences (not journals) are the major publication form in the Natural Language Processing and the Computational Web Science fields. The top conferences of these fields (e.g. ACL, COLING, CoNLL, EMNLP, ICWSM, NAACL, WSDM and WWW) are peer reviewed and highly competitive with low acceptance rates.

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Addresses Etc

Email:{firstNameLastName}@seas.harvard.edu or {initial.lastName}@neu.edu
Office Northeastern: The Network Science Institute, 177 Huntington Avenue, Boston
Office Harvard: Maxwell Dworkin Labratory, room 110, 33 Oxford st., Cambridge
If you want to see me, please email first to check my location.


I am/was TA-ing the following courses: Introduction to Computer Science and Java Programming†‡, Logical Programming°, Information Retrieval°, Data Mining.

†: The Hebrew University
‡: The Open University
°: Bar Ilan University


                                                            Using the wonders of sharing services, here are some Picasa albums:
  • my public Picasa
  • family

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