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Multiagent Learning for Competitive Opinion Optimization (Extended Abstract)

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New Trends in Computer Technologies and Applications (ICS 2022)

Part of the book series: Communications in Computer and Information Science ((CCIS,volume 1723))

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Abstract

From a perspective of designing or engineering for opinion formation games in social networks, the opinion maximization (or minimization) problem has been studied mainly for designing subset selecting algorithms. We define a two-player zero-sum Stackelberg game of competitive opinion optimization by letting the player under study as the leader minimize the sum of expressed opinions by doing so-called “internal opinion design”, knowing that the other adversarial player as the follower is to maximize the same objective by also conducting her own internal opinion design. We furthermore consider multiagent learning, specifically using the Optimistic Gradient Descent Ascent, and analyze its convergence to equilibria in the simultaneous version of competitive opinion optimization.

P.-A. Chen—Supported in part by MOST 110-2410-H-A49-011.

C.-C. Lin—Supported in part by MOST 110-2222-E-032-002-MY2.

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Notes

  1. 1.

    For a player maximizing her total reward given a sequence of reward vectors, the regret can also be defined accordingly.

  2. 2.

    In particular, for a node i, after its internal opinion is affected by the min player and the max player, without clipping its modified internal opinion value \(s_i+x_i+y_i\) clipped to the range \([-1,1]\) every node’s equilibrium strategy would result in a dominant strategy solution, which is a special Nash equilibrium and less interesting to look for since the strategies of both players would not be mutually entangled.

  3. 3.

    The whose proof is detailed in the full version.

  4. 4.

    This part is deferred to the full version.

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Correspondence to Po-An Chen or Chuang-Chieh Lin .

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Chen, PA., Lu, CJ., Lin, CC., Fu, KW. (2022). Multiagent Learning for Competitive Opinion Optimization (Extended Abstract). In: Hsieh, SY., Hung, LJ., Klasing, R., Lee, CW., Peng, SL. (eds) New Trends in Computer Technologies and Applications. ICS 2022. Communications in Computer and Information Science, vol 1723. Springer, Singapore. https://doi.org/10.1007/978-981-19-9582-8_6

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  • DOI: https://doi.org/10.1007/978-981-19-9582-8_6

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-19-9581-1

  • Online ISBN: 978-981-19-9582-8

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