Emotion dynamics is a framework for measuring how an individual's emotions change over time. It is a powerful tool for understanding how we behave and interact with the world. In this paper, we introduce a framework to track emotion dynamics through one's utterances. Specifically we introduce a number of utterance emotion dynamics (UED) metrics inspired by work in Psychology. We use this approach to trace emotional arcs of movie characters. We analyze thousands of such character arcs to test hypotheses that inform our broader understanding of stories. Notably, we show that there is a tendency for characters to use increasingly more negative words and become increasingly emotionally discordant with each other until about 90 percent of the narrative length. UED also has applications in behavior studies, social sciences, and public health.

翻译：情感动态是衡量个人情感如何随时间变化的框架。 它是一个了解我们如何行为和与世界互动的有力工具。 在本文中, 我们引入了一个通过一个人的言语跟踪情感动态的框架。 具体地说, 我们引入了一些由心理学作品启发的言语情感动态( UED) 度量。 我们使用这种方法追踪电影人物的情感弧形。 我们分析数千个这样的性格弧形来测试我们更广义地理解故事的假想。 值得注意的是, 我们显示一个趋势是, 人物使用越来越负面的单词, 并变得越来越情绪上不和, 直到大约90%的叙述长度。 UED在行为研究、社会科学和公共健康中也有应用。