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arXiv 2602.04604cs.CL
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超越整体评分:自动基于特质的质量评分论说作文

Beyond Holistic Scores: Automatic Trait-Based Quality Scoring of Argumentative Essays

ELLIS Alicante(埃利斯阿尔瓦雷斯);Universitat d'Alacant(阿尔瓦雷斯大学);École Polytechnique Fédérale de Lausanne (EPFL)(洛桑联邦理工学院)

Lucile Favero, Juan Antonio Pérez-Ortiz, Tanja Käser, Nuria Oliver

AI总结:

本文提出基于特征的自动论说作文评分方法,通过两种建模范式提升评分准确性,并展示小型LLM在无需微调下的竞争力。

摘要:

自动作文评分系统传统上侧重于整体评分,限制了其教学实用性,特别是在复杂的作文类型如论说写作的情况下。在教育环境中,教师和学习者需要可解释的、基于特征的反馈,以符合教学目标和已建立的评分标准。在本文中,我们研究了基于特征的自动论说作文评分,使用了两种互补的建模范式,旨在实现实用的教育部署:(1)结构化上下文学习结合小型开源大语言模型,以及(2)一个监督的、基于编码器的BigBird模型,采用CORAL风格的顺序回归公式,优化长序列理解。我们在ASAP++数据集上进行了系统评估,该数据集包含五种质量特征的作文评分,提供了核心论证维度的强覆盖。LLMs被提示使用设计的、评分标准对齐的上下文示例,以及反馈和置信度请求,同时我们通过rank-consistent CORAL框架显式建模评分的顺序性。我们的结果表明,显式建模评分顺序性在所有特征上都显著提高了与人类评分员的一致性,优于LLMs和名义分类和回归基线。这一发现强化了将模型目标与评分标准语义对齐对于教育评估的重要性。同时,小型开源LLMs在无需任务特定微调的情况下实现了具有竞争力的性能,特别是在以推理为导向的特征方面,同时使透明、隐私保护和本地可部署的评估场景成为可能。我们的发现为设计旨在提供可解释、评分标准对齐的反馈的AI教育系统提供了方法学、建模和实用见解。

英文摘要:

Automated Essay Scoring systems have traditionally focused on holistic scores, limiting their pedagogical usefulness, especially in the case of complex essay genres such as argumentative writing. In educational contexts, teachers and learners require interpretable, trait-level feedback that aligns with instructional goals and established rubrics. In this paper, we study trait-based Automatic Argumentative Essay Scoring using two complementary modeling paradigms designed for realistic educational deployment: (1) structured in-context learning with small open-source LLMs, and (2) a supervised, encoder-based BigBird model with a CORAL-style ordinal regression formulation, optimized for long-sequence understanding. We conduct a systematic evaluation on the ASAP++ dataset, which includes essay scores across five quality traits, offering strong coverage of core argumentation dimensions. LLMs are prompted with designed, rubric-aligned in-context examples, along with feedback and confidence requests, while we explicitly model ordinality in scores with the BigBird model via the rank-consistent CORAL framework. Our results show that explicitly modeling score ordinality substantially improves agreement with human raters across all traits, outperforming LLMs and nominal classification and regression-based baselines. This finding reinforces the importance of aligning model objectives with rubric semantics for educational assessment. At the same time, small open-source LLMs achieve a competitive performance without task-specific fine-tuning, particularly for reasoning-oriented traits, while enabling transparent, privacy-preserving, and locally deployable assessment scenarios. Our findings provide methodological, modeling, and practical insights for the design of AI-based educational systems that aim to deliver interpretable, rubric-aligned feedback for argumentative writing.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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