In argumentative writing, writers must brainstorm hierarchical writing goals, ensure the persuasiveness of their arguments, and revise and organize their plans through drafting. Recent advances in large language models (LLMs) have made interactive text generation through a chat interface (e.g., ChatGPT) possible. However, this approach often neglects implicit writing context and user intent, lacks support for user control and autonomy, and provides limited assistance for sensemaking and revising writing plans. To address these challenges, we introduce VISAR, an AI-enabled writing assistant system designed to help writers brainstorm and revise hierarchical goals within their writing context, organize argument structures through synchronized text editing and visual programming, and enhance persuasiveness with argumentation spark recommendations. VISAR allows users to explore, experiment with, and validate their writing plans using automatic draft prototyping. A controlled lab study confirmed the usability and effectiveness of VISAR in facilitating the argumentative writing planning process.

本研究介绍了VISAR，一个AI助手系统，用于协助写作者在他们的写作背景下构思和修订分层目标，并通过同步文本编辑和可视化程序组织论证结构，提高说服力。VISAR还支持自动草稿制作，实验室实验证实了其在促进论证写作规划过程中的可用性和有效性。

VISAR: 具有可视化编程和快速草稿原型设计的人工智能辩论写作助手