让AI协助故事创作时反复发散与聚合，生成更意外多样的创意方向。
Scaffolding Recursive Divergence and Convergence in Story Ideation
- 通过递归发散探索故事修改的多个高层方向。
- 支持用户收集并合成方向，实现多样化创意组合。
- 适合需要深度创意迭代的创作者或内容策划者。
人类的创造性构思包含对多样想法的探索（发散）以及将已探索想法精选整合为连贯组合（收敛）。尽管发散与收敛常交替嵌套，现有AI创意辅助工具（CSTs）仍缺乏对两者复杂协调的支持。本文提出Reverger，一种支持用户在故事修改中灵活迭代发散与收敛的AI驱动创意辅助工具。在发散阶段，工具支持递归探索特定故事部分的多个高层修改方向；在收敛阶段，允许用户收集这些方向并合成具体变体。用户可反复迭代直至获得满意结果。一项被试内研究显示，相较于基线，Reverger使参与者探索到更多非预期且多样的高层方向，且用户感知到更强的细粒度控制力，并发现更多值得投入努力的成果。
原文摘要 · Abstract (English)
Human creative ideation involves both exploration of diverse ideas (divergence) and selective synthesis of explored ideas into coherent combinations (convergence). While processes of divergence and convergence are often interleaved and nested, existing AI-powered creativity support tools (CSTs) lack support for sophisticated orchestration of divergence and convergence. We present Reverger, an AI-powered CST that helps users ideate variations of conceptual directions for modifying a story by scaffolding flexible iteration between divergence and convergence. For divergence, our tool enables recursive exploration of alternative high-level directions for modifying a specific part of the original story. For convergence, it allows users to collect explored high-level directions and synthesize them into concrete variations. Users can then iterate between divergence and convergence until they find a satisfactory outcome. A within-subject study revealed that Reverger permitted participants to explore more unexpected and diverse high-level directions than a comparable baseline. Reverger users also felt that they had more fine-grained control and discovered more effort-worthy outcomes.
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