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Events for September 09, 2024
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PhD Dissertation Defense - Nathan Bartley
Mon, Sep 09, 2024 @ 09:00 AM - 11:00 AM
Thomas Lord Department of Computer Science
University Calendar
Title: Measuring and Mitigating Exposure Bias in Online Social Networks
Date and Time: Monday, September 9th: 9:00am - 11:00am
Location: ISI 1135
Committee Members: Kristina Lerman (Chair)< Mike Ananny, Emilio Ferrara, Fred Morstatter
Abstract: Online social platforms employ personalized feed algorithms to gather and collate messages from accounts users follow (and increasingly, from accounts they don’t follow). However, the network structure and activity of these observed accounts distorts content’s perceived popularity prior to any personalization. We call this “exposure bias:” our research focuses on quantifying it using diverse metrics, and we evaluate different algorithms that underpin personalized feeds with these metrics. We use empirical X/Twitter data and simulations in a network to assess the influence different feeds have on exposure bias. We describe a greedy algorithm based on network properties that offers insights into how to mitigate exposure bias.Location: Information Science Institute (ISI) - 1135
Audiences: Everyone Is Invited
Contact: Nathan Bartley
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor.
