arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2212.08718cs.CLcs.AI
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神经故事规划

Neural Story Planning

Georgia Institute of Technology(佐治亚理工学院)

Anbang Ye, Christopher Cui, Taiwei Shi, Mark O. Riedl

摘要:

自动情节生成是一个挑战,即生成一系列事件,这些事件将被读者视为一个连贯故事的情节。传统的符号规划者从目标状态规划故事,并保证逻辑因果情节的连贯性,但依赖于手工制作的行动库及其先决条件和效果。这种封闭的世界设置限制了象征性规划者可以产生的长度和多样性。另一方面,预先训练的神经语言模型可以生成具有极大多样性的故事,但通常无法以指定的方式结束故事,并且可能难以保持连贯性。在本文中,我们提出了一种方法来故事情节生成,统一的因果规划与神经语言模型。我们建议使用从大语言模型中提取的常识知识,以向后链接的方式递归地扩展故事情节。具体来说,我们的系统推断故事中事件的先决条件,然后是导致这些条件成为现实的事件。我们进行了自动评估,以衡量叙事连贯性,如回答故事中不同事件是否与其他事件有因果关系的问题的能力。结果表明,我们提出的方法产生更多的连贯的情节比几个强基线。

英文摘要:

Automated plot generation is the challenge of generating a sequence of events that will be perceived by readers as the plot of a coherent story. Traditional symbolic planners plan a story from a goal state and guarantee logical causal plot coherence but rely on a library of hand-crafted actions with their preconditions and effects. This closed world setting limits the length and diversity of what symbolic planners can generate. On the other hand, pre-trained neural language models can generate stories with great diversity, while being generally incapable of ending a story in a specified manner and can have trouble maintaining coherence. In this paper, we present an approach to story plot generation that unifies causal planning with neural language models. We propose to use commonsense knowledge extracted from large language models to recursively expand a story plot in a backward chaining fashion. Specifically, our system infers the preconditions for events in the story and then events that will cause those conditions to become true. We performed automatic evaluation to measure narrative coherence as indicated by the ability to answer questions about whether different events in the story are causally related to other events. Results indicate that our proposed method produces more coherent plotlines than several strong baselines.

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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