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TG-OUT: temporal outlier patterns detection in Twitter attribute induced graphs

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Abstract

Given a network of Twitter users, can we capture their posting behavior over time, identify patterns that could probably describe, model or predict their activity? Can we identify temporal connectivity patterns that emerge from the use of specific attributes? More challengingly, are there particular attribute usage patterns which indicate an inherent anomaly? This work provides solid answers to all these questions, extending previous work employed on other social networks and attribute types. We propose TG-OUT, a pipeline of methods which : (a) model the temporal evolution of attribute induced graphs to detect peculiar attributes, (b) identify temporal patterns in attribute distributions, (c) investigate differences in patterns emerging from bot and/or non-bot accounts, (d) extract tailored sets of exploitable features. Experimental results show that: most of the individual attribute distributions remain stable over time following mostly power laws norm; the temporal evolution of attribute induced graphs obey certain laws and deviations are outliers; we discover that patterns present deviations which depend on the type of accounts which use each attribute; finally, we show that careful selection of only two features which are used to train a simple machine learning algorithm, produces a model which efficiently identifies attributes mainly used by bots.

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Notes

  1. https://help.twitter.com/en/using-twitter/twitter-follow-limit

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Acknowledgements

This research has been co-financed by the European Union and Greek national funds through the Operational Program Competitiveness, Entrepreneurship and Innovation, under the call RESEARCH — CREATE — INNOVATE (Project Code: T1EDK-03052), as well as from the H2020 Research and Innovation Programme under Grant Agreement No.875329.

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  1. Informatics Department, Aristotle University of Thessaloniki, Thessaloniki, Greece

    Ilias Dimitriadis, Marinos Poiitis & Athena Vakali

  2. Carnegie Mellon University Pittsburgh, Pittsburgh, PA, USA

    Christos Faloutsos

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  1. Ilias Dimitriadis
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Correspondence to Ilias Dimitriadis.

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This article belongs to the Topical Collection: Special Issue on Computational Aspects of Network Science Guest Editors: Apostolos N. Papadopoulos and Richard Chbeir

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Dimitriadis, I., Poiitis, M., Faloutsos, C. et al. TG-OUT: temporal outlier patterns detection in Twitter attribute induced graphs. World Wide Web 25, 2429–2453 (2022). https://doi.org/10.1007/s11280-021-00986-0

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