arXiv:2606.14060cs.LGcs.CL2026-06

用多视角高斯过程检测机器文本,抗干扰能力强。

Non-Parametric Machine Text Detection via Multi-View Gaussian Processes

  • 从文档中提取多种互补特征,用高斯过程集成融合
  • 在三个基准上对新型攻击仍保持高检测率
  • 适合需要可靠判断的高风险场景使用

对抗性条件如改写和定向风格迁移会显著降低机器文本检测器的准确率。然而,一个文档包含多个互补信号(如风格特征、置信度与排序特征、结构特征),攻击若压制其中一种,其他特征可能仍有效。参数化分类器虽可学习融合这些特征,但在分布偏移(如新攻击或未见语言模型)时易产生自信的错误预测。为此,我们提出一种多视角非参数检测框架,从同一文档中提取多个互补特征视图,并通过高斯过程集成聚合各视图证据。通过跨视图证据聚合,攻击需同时突破多个独立检测轴,大幅提高逃避成本。高斯过程形式还提供校准概率和对分布外输入的合理拒绝,支持在高风险场景中的可靠部署。我们在三个涵盖多种生成器与攻击的基准上评估:DetectRL、RAID 基准以及 PAN2025 共享任务,结果表明,该多视角检测器在所考虑攻击下仍保持强性能,优于现有方法在未见攻击上的表现。

原文摘要 · Abstract (English)

Adversarial conditions such as paraphrasing and targeted style transfer sharply degrade the accuracy of machine text detectors. A document, however, carries multiple complementary signals (e.g., stylistic features, likelihood and rank-order features, and structural features), and an attack that suppresses one may leave others intact. While a parametric classifier can learn to combine these features given sufficient supervision, classifiers are prone to making confidently incorrect predictions when the distribution shifts (e.g., novel attacks or unseen language models). To address this, we propose a multi-view, non-parametric detection framework that extracts complementary feature views from the same document and aggregates per-view evidence through a Gaussian process ensemble. By aggregating evidence across views, an adversary must simultaneously defeat multiple independent axes of detection, substantially raising the cost of evasion. The Gaussian process formulation additionally provides calibrated probabilities and principled abstention on out-of-distribution inputs, supporting reliable deployment in high-stakes settings. We evaluate on three benchmarks spanning diverse generators and attacks: the DetectRL and RAID benchmarks, and the PAN2025 shared task and demonstrate that our multi-view detector maintains strong performance under the considered attacks, outperforming existing approaches against held out attacks.

文本检测高斯过程非参数

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