Event organised by the Computational Humanities research group.
To register to the seminar, please fill in this form by 28 February 2025.
4 March 2025 – 4pm GMT
Remote – Via Microsoft Teams.
In person – King’s College London, Bush House (SE), 1.10.
Brian Ball (Northeastern University London), Structure Meets Strategy in the Misinformation Age: a Simulation-Based Study
Abstract
We are now living in what some have called ‘the misinformation age’ (O’Connor and Weatherall, 2019), in which AI algorithms and social networks determine the quality of the information we can access – with a range of important consequences (e.g. for democracy). Previous work has explored the effects of different information processing strategies on the abilities of communities of rational agents to discover the truth in a timely manner (Ball et al., 2024). The present paper uses the PolyGraphs simulation framework to (computationally) investigate how network structure interacts with, and impacts upon, the effectiveness of these strategies.
We begin (in section 1) with a thorough investigation of artificial networks generated using the preferential attachment model (Barabasi and Albert, 1999) on which existing network nodes (agents) with more connections are more likely to be linked, via an information-sharing edge, to new nodes joining the network. We find (amongst other things) that the ill-effects of mis- and disinformation on the efficiency of truth-seeking inquiry are even stronger in these relatively sparse (i.e. low density) networks than in the complete networks that were explored previously; and we detect hints that concerns about accuracy extend to larger networks than previously thought (Zollman, 2007). We then (in section 2) pursue a more systematic investigation of a range of network structures, including random networks (Erdos and Renyi, 1959), as well as those that exhibit the so-called ‘small-world’ property (Watts and Strogatz, 1998), using advanced statistical techniques to tease out the relative influences of a range of structural features, including density, clustering, and path length. Finally, (in section 3) we look at a pair of larger networks representing real-world communities/populations.
Bio
Brian Ball is Head of Faculty in Philosophy at Northeastern University London. A Senior Fellow of the Higher Education Academy, he was previously a Lecturer in Philosophy at St. Anne’s and then Balliol College, Oxford. His expertise is in the theory of knowledge, the philosophy of mind, and the philosophy of language. His recent work engages with computer science and artificial intelligence.
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