Alelab is  the signal and information processing research lab at the Department of Electrical and Systems Engineering (ESE) at the University of Pennsylvania (Penn). Our research program is organized around the theme of distributed collaborative intelligent systems which we define as an autonomous team that collaborates to exhibit intelligent behavior without necessarily relying on central coordination. While we are aware that multiple perspectives are possible, our vision at Alelab is that the key to understand and enable intelligent group behaviors is understanding network interactions. The agents that comprise an intelligent group communicate  over a network, acquire data over a network, and interact over a network. This requires development of Wireless Autonomous Networks, methods for Machine Learning on Network Data and algorithms for Distributed Collaborative Learning.


Dear colleagues

Thanks for visiting! This website provides easy access to our group’s research. For a general description please visit our research page. THis page will give you an idea of how the different things we do fit together. If you are looking for a specific paper please refer to our list of publications. The lab’s google scholar profile does a better job at keeping an up to date list of publications although it doesn’t distinguish between journals and conferences.

What we hope you will find most useful is our group’s blog. The blog does not, in general, contain information that is not already part of some paper. However, we try to make the blog more focused on explaining ideas than on documenting ideas, which is what a paper does.


Dear students

If you are currently enrolled in one of the courses taught by Alejandro Ribeiro, please use the navigation menu to access the corresponding course’s website. If you are considering registration into one of these courses, you have just read how to access the individual sites. However, you may find it useful to visit the teaching site which contains some digressions on teaching philosophy. After teaching at Penn for a long time,




Contact Information

If you’ve reached this page chances are you know Alelab is the research group of Alejandro Ribeiro. If you need to get in touch with Alejandro he can be found in the following places.



In person : 411B in 3401 Walnut St. (4th floor)
email : aribeiro@seas.upenn.edu
Cell : 612 889 9217
Skype : aribeiro_de_montevideo
mail: Dept. of Electrical & Systems Engineering
University of Pennsylvania
Room 203 Moore Building
200 South 33rd Street
Philadelphia, PA 19104