Abstract
This study audits the structural and emergent properties of YouTube’s video recommendations, with an emphasis on the black-box evaluation of recommender bias, confinement, and formation of information bubbles in the form of content communities. Adopting complex networks and graphical probabilistic approaches, the results of our analysis of 6,068,057 video recommendations made by the YouTube algorithm reveals strong indicators of recommendation bias leading to the formation of closely-knit and confined content communities. Also, our qualitative and quantitative exploration of the prominent content and discourse in each community further uncovered the formation of narrative-specific clusters made by the recommender system we examined.
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Acknowledgments
This research is funded in part by the U.S. National Science Foundation (OIA- 1946391, OIA-1920920, IIS-1636933, ACI-1429160, and IIS-1110868), U.S. Office of Naval Research (N00014-10-1-0091, N00014-14-1-0489, N00014-15-P-1187, N00014-16-1-2016, N00014-16-1-2412, N00014-17-1-2675, N00014-17-1-2605, N68335-19-C-0359, N00014-19-1-2336, N68335-20-C-0540, N00014-21-1-2121), U.S. Air Force Research Lab, U.S. Army Research Office (W911NF-17-S-0002, W911NF-16-1-0189), U.S. Defense Advanced Research Projects Agency (W31P4Q- 17-C-0059), Arkansas Research Alliance, the Jerry L. Maulden/Entergy Endowment at the University of Arkansas at Little Rock, and the Australian Department of Defense Strategic Policy Grants Program (SPGP) (award number: 2020-106-094). Any opinions, findings, conclusions, or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the funding organizations. The researchers gratefully acknowledge the support.
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Kirdemir, B., Agarwal, N. (2022). Exploring Bias and Information Bubbles in YouTube’s Video Recommendation Networks. In: Benito, R.M., Cherifi, C., Cherifi, H., Moro, E., Rocha, L.M., Sales-Pardo, M. (eds) Complex Networks & Their Applications X. COMPLEX NETWORKS 2021. Studies in Computational Intelligence, vol 1073. Springer, Cham. https://doi.org/10.1007/978-3-030-93413-2_15
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