{"slug": "dream-at-semeval-2026-task-13-salsa-for-single-pass-machine-generated-code", "title": "Dream at SemEval-2026 Task 13: SALSA for Single-Pass Machine-Generated Code Detection", "summary": "Researchers propose SALSA, a single-pass autoregressive LLM structured classification method, for detecting machine-generated code in SemEval-2026 Task 13. Their system achieves an out-of-distribution F1 score of 0.789, significantly outperforming the CodeBERT baseline of 0.305.", "body_md": "arXiv:2606.25102v1 Announce Type: new\nAbstract: Large language models have transformed code generation, raising concerns around authorship, assessment integrity, and software trust. SemEval-2026 Task 13 Subtask A operationalizes detection as binary classification over code snippets, with a particular emphasis on out-of-distribution (OOD) generalization across unseen programming languages and application domains. We propose a SALSA-style formulation, Single-pass Autoregressive LLM Structured Classification, that maps each class to a dedicated output token and trains the model to emit a single-token label in a structured response. Rather than engineering hand-crafted features or decision rules, this formulation delegates the authorship decision to the model. To improve OOD robustness, we combine balanced sampling across languages with parameter-efficient fine-tuning and conservative training (low learning rate, single epoch) to avoid overfitting to the training domain. Our best system achieves OOD $F_1 = 0.789$ on the official leaderboard, substantially outperforming the CodeBERT baseline ($F_1 = 0.305$).", "url": "https://wpnews.pro/news/dream-at-semeval-2026-task-13-salsa-for-single-pass-machine-generated-code", "canonical_source": "https://arxiv.org/abs/2606.25102", "published_at": "2026-06-25 04:00:00+00:00", "updated_at": "2026-06-25 04:15:16.801597+00:00", "lang": "en", "topics": ["large-language-models", "machine-learning", "ai-research"], "entities": ["SemEval-2026", "CodeBERT", "SALSA"], "alternates": {"html": "https://wpnews.pro/news/dream-at-semeval-2026-task-13-salsa-for-single-pass-machine-generated-code", "markdown": "https://wpnews.pro/news/dream-at-semeval-2026-task-13-salsa-for-single-pass-machine-generated-code.md", "text": "https://wpnews.pro/news/dream-at-semeval-2026-task-13-salsa-for-single-pass-machine-generated-code.txt", "jsonld": "https://wpnews.pro/news/dream-at-semeval-2026-task-13-salsa-for-single-pass-machine-generated-code.jsonld"}}