用多维度分析教学评价,精准识别教师优缺点。
TeachPro: Multi-Label Qualitative Teaching Evaluation via Cross-View Graph Synergy and Semantic Anchored Evidence Encoding
- 设计语义锚点编码器,对五类教学维度进行精准匹配。
- 融合语法与语义双视角图网络,提升评论理解深度。
- 适合教育评估、智能教学改进等场景使用。
标准化教学评价常存在可靠性低、选项受限和回答失真问题。现有机器学习方法多将开放评论简化为二元情感,忽视内容清晰度、反馈及时性、教师仪态等具体关切,难以提供有效改进建议。我们提出 TeachPro,一个面向五个核心教学维度(专业能力、教学行为、教学效果、课堂体验及其他绩效指标)的多标签学习框架。首先提出维度锚定证据编码器,包含:(i) 预训练文本编码器生成上下文嵌入;(ii) 将五类教学维度表示为可学习的语义锚点;(iii) 跨注意力机制在结构化语义空间中对齐证据与维度。其次提出跨视图图协同网络,包含:(i) 句法分支,从依存树中提取显式语法依赖;(ii) 语义分支,基于 BERT 相似度图建模隐含概念关系。通过 BiAffine 融合模块对齐句法与语义单元,并以差分正则化鼓励互补表征。最后,跨注意力机制连接维度锚点与多视图评论表征。我们还构建了一个新基准数据集,包含专家标注的定性注释与多标签评分。大量实验表明,TeachPro 在多种评估设置下均展现出更优的诊断粒度与鲁棒性。
原文摘要 · Abstract (English)
Standardized Student Evaluation of Teaching often suffer from low reliability, restricted response options, and response distortion. Existing machine learning methods that mine open-ended comments usually reduce feedback to binary sentiment, which overlooks concrete concerns such as content clarity, feedback timeliness, and instructor demeanor, and provides limited guidance for instructional improvement.We propose TeachPro, a multi-label learning framework that systematically assesses five key teaching dimensions: professional expertise, instructional behavior, pedagogical efficacy, classroom experience, and other performance metrics. We first propose a Dimension-Anchored Evidence Encoder, which integrates three core components: (i) a pre-trained text encoder that transforms qualitative feedback annotations into contextualized embeddings; (ii) a prompt module that represents five teaching dimensions as learnable semantic anchors; and (iii) a cross-attention mechanism that aligns evidence with pedagogical dimensions within a structured semantic space. We then propose a Cross-View Graph Synergy Network to represent student comments. This network comprises two components: (i) a Syntactic Branch that extracts explicit grammatical dependencies from parse trees, and (ii) a Semantic Branch that models latent conceptual relations derived from BERT-based similarity graphs. BiAffine fusion module aligns syntactic and semantic units, while a differential regularizer disentangles embeddings to encourage complementary representations. Finally, a cross-attention mechanism bridges the dimension-anchored evidence with the multi-view comment representations. We also contribute a novel benchmark dataset featuring expert qualitative annotations and multi-label scores. Extensive experiments demonstrate that TeachPro offers superior diagnostic granularity and robustness across diverse evaluation settings.
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