arXiv AI By Lynnette Hui Xian Ng, Kathleen M. Carley

LLM-Augmented Agent-Based Simulation of Cyber Social Agents

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The paper introduces the concept of Cyber Social Agents (CSAs), automated actors on social media defined by a taxonomy of archetypes based on operational tactics and rhetorical style. It integrates this taxonomy into a large language model (LLM)-driven simulation where agents interact within a network, allowing the study of how diverse agent types influence information diffusion and social influence. The approach bridges rule‑based agent models and LLM‑powered simulations by parameterizing generated agents with empirically grounded CSA personas.

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arXiv Computation and Language
Sep 18

Social Simulacra in the Wild: AI Agent Communities on Moltbook

The paper reports the first large‑scale empirical comparison of AI‑agent and human online communities, analyzing 73,899 Moltbook and 189,838 Reddit posts across five matched communities. It finds that Moltbook shows extreme participation inequality (Gini = 0.84 vs. 0.47) and high cross‑community author overlap (33.8% vs. 0.5%). Linguistically, AI‑generated content is emotionally flattened, more assertive than exploratory, and socially detached, leading to community‑level homogenization that is largely a structural artifact of shared authorship. At the individual level, AI agents are more identifiable than human users due to outlier stylistic profiles amplified by their extreme posting volume.

By Agam Goyal, Olivia Pal, Hari Sundaram, Eshwar Chandrasekharan, Koustuv Saha