arXiv:2512.03582cs.CLcs.AI2025-12

构建首个印度偏见新闻细粒度叙事数据集,提升对意识形态传播的识别能力。

Fine-grained Narrative Classification in Biased News Articles

  • 基于多层级标注构建细粒度叙事分类框架,涵盖立场、叙事框架与修辞手法。
  • 在1266篇印度新闻上验证,对意识形态偏见和叙事框架识别准确率显著提升。
  • 适合关注虚假信息、舆论操控与内容安全研究者使用。

叙事是宣传的认知与情感支柱,将零散的说服技巧整合为有逻辑的故事,用以合理化行为、归因责任并唤起意识形态认同。本文提出一种针对偏见新闻文章的细粒度叙事分类方法,并探索文章偏见分类作为前置任务。我们构建了INDI-PROP,首个基于意识形态的细粒度叙事数据集,用于分析印度新闻媒体中的宣传现象。该数据集包含1,266篇聚焦近期两个极化社会政治事件(《公民身份法》争议与农民抗议)的文章,每篇文章在三个层级进行标注:(i) 意识形态立场(支持政府、支持反对派、中立),(ii) 事件相关的细粒度叙事框架(锚定于意识形态极化与传播意图),(iii) 说服性技术。我们提出FANTA与TPTC两种基于GPT-4o-mini的多跳提示推理框架,分别通过分层信息抽取与上下文框架融合、以及两阶段说服线索分解实现层次化推理。评估表明,在各项任务中均显著优于基线模型。

原文摘要 · Abstract (English)

Narratives are the cognitive and emotional scaffolds of propaganda. They organize isolated persuasive techniques into coherent stories that justify actions, attribute blame, and evoke identification with ideological camps. In this paper, we propose a novel fine-grained narrative classification in biased news articles. We also explore article-bias classification as the precursor task to narrative classification and fine-grained persuasive technique identification. We develop INDI-PROP, the first ideologically grounded fine-grained narrative dataset with multi-level annotation for analyzing propaganda in Indian news media. Our dataset INDI-PROP comprises 1,266 articles focusing on two polarizing socio-political events in recent times: CAA and the Farmers' protest. Each article is annotated at three hierarchical levels: (i) ideological article-bias (pro-government, pro-opposition, neutral), (ii) event-specific fine-grained narrative frames anchored in ideological polarity and communicative intent, and (iii) persuasive techniques. We propose FANTA and TPTC, two GPT-4o-mini guided multi-hop prompt-based reasoning frameworks for the bias, narrative, and persuasive technique classification. FANTA leverages multi-layered communicative phenomena by integrating information extraction and contextual framing for hierarchical reasoning. On the other hand, TPTC adopts systematic decomposition of persuasive cues via a two-stage approach. Our evaluation suggests substantial improvement over underlying baselines in each case.

叙事分析偏见检测多层级标注大模型推理

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