Welcome to the homepage of the Networks seminars, a weekly seminar series on networks, complex systems, and related topics held in the Mathematical Institute.  In this year's series, we will alternate between regular talks and "fresh from the arXiv" talks (FFTA) in which we invite the author of a recently published (pre)print to discuss their work. Suggestions are always welcome!

The Networks seminar usually takes place on Tuesdays at 14:00-15:00. In line with current regulation, we are excited to announce that the seminars will now run with a new hybrid format that will allow attendees to choose whether to join our group in person in room C1 at the Mathematical Institute, or to attend remotely on Zoom. A link to the event will be made available in the schedule of upcoming talks below (for logged-in users) and via the mailing list.

To sign up to our mailing list simply send an empty email to the following address:
@email

If you would like to give a presentation at our seminar, please do not hesitate to contact the organisers Erik Hörmann and Yu Tian. The presentation can be either about your own work or on some (recent) interesting article on networks or on complex systems in general.

In case you missed any of the talks, we will also make recordings of the talks available on our youtube channel.

 

Upcoming Seminars

Tue, 27 Jan 2026
14:00
C3

Social Interactions in Chimpanzees

Gesine Reinert
(Department of Statistics, University of Oxford)
Abstract
This work is based on 30 years of behavioural observations of the largest-known group of wild chimpanzees. The data includes 10 different proximity and interaction levels between chimpanzees.  There is an abrupt transition from cohesion to polarization in 2015 and the emergence of two distinct groups by 2018.
First we combine the data into a time series of a single weighted network per time stamps. Then we identify groups of individuals that stay related for a significant length of time. We detect cliques in the animal social network time series which match qualitative observations by chimpanzee experts.  Finally we introduce a simple  model to explain the split.
 
This is based on joint work with Mihai Cucuringu, Yixuan He, John Mitani, Aaron Sandel, and David Wipf.  
Tue, 03 Mar 2026
14:00
C3

TBA

Bridget Smart
((Mathematical Institute University of Oxford))
Tue, 10 Mar 2026
14:00
C3

TBA

Márton Pósfai
(Central European University)

You can also find a list of all talks (with abstracts) prior to 2018 here, and the former website
of the Networks journal club at the Oxford complexity center (CABDyN) here.

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Last updated on 29 Nov 2024, 12:47pm. Please contact us with feedback and comments about this page.