Next Reply Prediction X Dataset: Linguistic Discrepancies in Naively Generated Content

• URL: http://arxiv.org/abs/2602.19177v1
• Date: Sun, 22 Feb 2026 13:14:27 GMT
• Title: Next Reply Prediction X Dataset: Linguistic Discrepancies in Naively Generated Content
• Authors: Simon Münker, Nils Schwager, Kai Kugler, Michael Heseltine, Achim Rettinger,
• Abstract summary: Large Language Models (LLMs) as proxies for human participants in social science research presents a promising, yet methodologically risky, paradigm shift.<n>This paper addresses these limitations by introducing a novel, history-conditioned reply prediction task on authentic X (formerly Twitter) data.<n>We analyze these discrepancies using stylistic and content-based metrics, providing a quantitative framework for researchers to assess the quality and authenticity of synthetic data.
• Score: 1.215922138351105
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The increasing use of Large Language Models (LLMs) as proxies for human participants in social science research presents a promising, yet methodologically risky, paradigm shift. While LLMs offer scalability and cost-efficiency, their "naive" application, where they are prompted to generate content without explicit behavioral constraints, introduces significant linguistic discrepancies that challenge the validity of research findings. This paper addresses these limitations by introducing a novel, history-conditioned reply prediction task on authentic X (formerly Twitter) data, to create a dataset designed to evaluate the linguistic output of LLMs against human-generated content. We analyze these discrepancies using stylistic and content-based metrics, providing a quantitative framework for researchers to assess the quality and authenticity of synthetic data. Our findings highlight the need for more sophisticated prompting techniques and specialized datasets to ensure that LLM-generated content accurately reflects the complex linguistic patterns of human communication, thereby improving the validity of computational social science studies.

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