On the Zero-Shot Generalization of Machine-Generated Text Detectors

• URL: http://arxiv.org/abs/2310.05165v1
• Date: Sun, 8 Oct 2023 13:49:51 GMT
• Title: On the Zero-Shot Generalization of Machine-Generated Text Detectors
• Authors: Xiao Pu, Jingyu Zhang, Xiaochuang Han, Yulia Tsvetkov, Tianxing He
• Abstract summary: Large language models are fluent enough to generate text indistinguishable from human-written language. This work is motivated by an important research question: How will the detectors of machine-generated text perform on outputs of a new generator, that the detectors were not trained on?
• Score: 41.25534723956849
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The rampant proliferation of large language models, fluent enough to generate text indistinguishable from human-written language, gives unprecedented importance to the detection of machine-generated text. This work is motivated by an important research question: How will the detectors of machine-generated text perform on outputs of a new generator, that the detectors were not trained on? We begin by collecting generation data from a wide range of LLMs, and train neural detectors on data from each generator and test its performance on held-out generators. While none of the detectors can generalize to all generators, we observe a consistent and interesting pattern that the detectors trained on data from a medium-size LLM can zero-shot generalize to the larger version. As a concrete application, we demonstrate that robust detectors can be built on an ensemble of training data from medium-sized models.

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