We present a text-based framework for investigating moral sentiment change of the public via longitudinal corpora. Our framework is based on the premise that language use can inform people's moral perception toward right or wrong, and we build our methodology by exploring moral biases learned from diachronic word embeddings. We demonstrate how a parameter-free model supports inference of historical shifts in moral sentiment toward concepts such as slavery and democracy over centuries at three incremental levels: moral relevance, moral polarity, and fine-grained moral dimensions. We apply this methodology to visualizing moral time courses of individual concepts and analyzing the relations between psycholinguistic variables and rates of moral sentiment change at scale. Our work offers opportunities for applying natural language processing toward characterizing moral sentiment change in society.

我们提出了基于文本的框架，通过纵向语料库研究公众道德情感变化。我们的方法建立在语言使用可以反映人们对对与错的道德观念之上，并通过探索从时间序列的词嵌入中学习到的道德偏见来构建我们的方法论。我们的研究为应用自然语言处理技术对社会中的道德情感变化进行表征提供了机会。

基于文本推断道德情感变化