CASPER in the Machine: Insights into Character Variety in LLM-Generated Stories

arXiv:2606.22454 · cs.CL, cs.AI · Submitted 2026-06-21 · Read on arXiv

cs.CL, cs.AI

Submitted: 2026-06-21

Updated: 2026-08-27

Code: https://github.com/adbrei/casper

Terminology

• Empirical Methods in Natural Language Processing — 5× in this paper
• Alignment — 3× in this paper · explained in 1 episode
• LLM-as-a-Judge — 3× in this paper · explained in 3 episodes
• F1 Score — 2× in this paper · explained in 3 episodes
• Grounding — 2× in this paper · explained in 3 episodes
• Regret — 2× in this paper · explained in 3 episodes
• Transformer — 2× in this paper · explained in 2 episodes
• AI Alignment — 1× in this paper · explained in 2 episodes
• Accountability — 1× in this paper · explained in 2 episodes
• Accuracy — 1× in this paper · explained in 1 episode
• Consistency — 1× in this paper · explained in 3 episodes
• Contrastive Learning — 1× in this paper · explained in 5 episodes
• Frustration — 1× in this paper · explained in 2 episodes
• Hypergraph — 1× in this paper · explained in 2 episodes
• In-Context Learning — 1× in this paper · explained in 4 episodes
• In-Context Learning (ICL) — 1× in this paper · explained in 5 episodes
• Large Language Models (LLMs) — 1× in this paper · explained in 6 episodes
• Perplexity — 1× in this paper · explained in 3 episodes
• Personalization — 1× in this paper · explained in 2 episodes

Sources

• Can AI writing be salvaged? Mitigating Idiosyncrasies and Improving Human-AI Alignment in the Writing Process through Edits
• Spotting LLMs With Binoculars: Zero-Shot Detection of Machine-Generated Text
• Creative Writing with an AI-Powered Writing Assistant: Perspectives from Professional Writers
• Show, Don't Tell: Uncovering Implicit Character Portrayal using LLMs
• Leveraging Explainable AI for LLM Text Attribution: Differentiating Human-Written and Multiple LLMs-Generated Text
• QUDsim: Quantifying Discourse Similarities in LLM-Generated Text
• Panza: Design and Analysis of a Fully-Local Personalized Text Writing Assistant
• People who frequently use ChatGPT for writing tasks are accurate and robust detectors of AI-generated text
• CollabStory: Multi-LLM Collaborative Story Generation and Authorship Analysis
• HuggingFace's Transformers: State-of-the-art Natural Language Processing

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