Dear all,
Tomorrow we will have our next online LIRa. You can find the details of the talk at the end of the e-mail. The zoom meeting will be available from 16.00 (Amsterdam time) but the talk itself will start at 16.30. Once again, we advise you to join a bit in advance, especially if you're not familiar with zoom. You can join through the following link:
https://zoom.us/j/438683420?pwd=NjQrVDBYeFhXc0pBc0N0eC9EZk9adz09
Meeting ID: 438 683 420 Password: 013540
We ask you to read the LIRa guidelines for online sessions here: https://projects.illc.uva.nl/lgc/seminar/guidelines-for-online-sessions/
Speaker: Mina Young Pedersen
Date and Time: Thursday, March 19th 2020, 16:30-18:00
Venue: ONLINE
Title: Logical analyses of polarization and echo chambers
Abstract.
Recent literature has shown a growing interest for research in the interplay between logic and social network theory. One particularly prominent approach is to think of social relationships in terms of relations on a Kripke frame and use tools from various modal logics to reason about agents’ knowledge, characteristics and access to information.
This talk will be about two such logics in context of the social phenomena polarization and echo chambers. The first is a recent basic modal logic developed to analyze balance theory. We examine different extensions to its language to define previously undefinable frame properties and introduce distance measures to evaluate how far a network is from polarization. Then a novel two-sorted hybrid logic of strong and weak ties will be presented. We see that a known claim from social network analysis is a validity and relate it to echo chamber formation. We will also talk about threshold models, an epistemic modality and dynamic operators in this logical framework.
Hope to see you there!
The LIRa team