Beyond Representational Similarity: Source-Conditioned Description-Length Gain for Generative Plagiarism Detection and Candidate Source Reranking

arXiv:2608.03859 · cs.CL, cs.AI · Submitted 2026-08-12 · Read on arXiv

Peijia Guo, Wenxuan Xie, ZiGuang Li, Ming Li

cs.CL, cs.AI

Submitted: 2026-08-12

Updated: 2026-08-13

Code: https://github.com/Alex-Fabbri/Multi-News

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Benchmark — 18× in this paper · explained in 2 episodes
• Accuracy — 11× in this paper · explained in 1 episode
• Robustness — 8× in this paper · explained in 6 episodes
• Transformer — 7× in this paper · explained in 2 episodes
• Transformers — 7× in this paper · explained in 2 episodes
• Source-Conditioned Description-Length Gain — 6× in this paper
• Embeddings — 5× in this paper · explained in 2 episodes
• Localization — 4× in this paper · explained in 2 episodes
• Tokenization — 4× in this paper · explained in 2 episodes
• AUROC — 3× in this paper · explained in 3 episodes
• Calibration — 3× in this paper · explained in 9 episodes
• Cosine Similarity — 3× in this paper · explained in 3 episodes
• Evaluation Protocol — 3× in this paper · explained in 2 episodes
• Provenance — 3× in this paper · explained in 5 episodes
• Training-Free Framework — 3× in this paper · explained in 2 episodes
• Core — 2× in this paper · explained in 2 episodes
• Frozen model — 2× in this paper · explained in 3 episodes
• Hyperparameters — 2× in this paper · explained in 2 episodes
• Language Models (LLMs) — 2× in this paper · explained in 2 episodes
• Large Language Models (LLMs) — 2× in this paper · explained in 9 episodes
• Papers — 2× in this paper · explained in 3 episodes
• Semantic Similarity — 2× in this paper · explained in 2 episodes
• Verification — 2× in this paper · explained in 2 episodes
• Composition — 1× in this paper · explained in 2 episodes
• Decode — 1× in this paper · explained in 2 episodes
• Dense-Anchored Abstract Calibration — 1× in this paper
• Distillation — 1× in this paper · explained in 2 episodes
• Evaluation Framework — 1× in this paper · explained in 3 episodes
• F1 Score — 1× in this paper · explained in 4 episodes
• Fine-Tuning — 1× in this paper · explained in 5 episodes
• Generalization — 1× in this paper · explained in 14 episodes
• Generative AI — 1× in this paper · explained in 2 episodes
• Generator — 1× in this paper · explained in 2 episodes
• Information Gain — 1× in this paper · explained in 2 episodes
• Knowledge Distillation — 1× in this paper · explained in 15 episodes
• Memorization — 1× in this paper · explained in 4 episodes
• Mutual Information — 1× in this paper · explained in 2 episodes
• Obfuscation — 1× in this paper · explained in 2 episodes

Sources

• Overview of PAN 2026: Voight-Kampff Generative AI Detection, Text Watermarking, Multi-Author Writing Style Analysis, Generative Plagiarism Detection, and Reasoning Trajectory Detection
• Linq-Embed-Mistral Technical Report
• The Llama 3 Herd of Models
• Ministral 3
• Qwen3 Technical Report

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