论文标题
向我展示更多详细信息：从半结构网络数据中发现过程的层次结构
Show Me More Details: Discovering Hierarchies of Procedures from Semi-structured Web Data
论文作者
论文摘要
过程本质上是分层的。要“制作视频”，可能需要“购买相机”，这反过来可能需要一个“设定预算”。尽管这种分层知识对于关于复杂程序的推理至关重要，但大多数现有工作都将程序视为浅层结构，而无需对亲子关系进行建模。在这项工作中，我们尝试构建基于Wikihow的程序的开放域层次知识基础（KB），该程序是一个包含超过110k的教学文章的网站，每个网站都记录了执行复杂过程的步骤。为此，我们开发了一种简单有效的方法，该方法在文章中将步骤（例如，“购买相机”）链接到具有相似目标（例如“如何选择摄像机”）的其他文章中，递归构建KB。根据自动评估，人类判断以及在下游任务（例如教学视频检索）中，我们的方法大大优于几个强大的基线。 可以在https://wikihow-hierarchy.github.io上找到具有部分数据的演示。代码和数据位于https://github.com/shuyanzhou/wikihow_hierarchy。
Procedures are inherently hierarchical. To "make videos", one may need to "purchase a camera", which in turn may require one to "set a budget". While such hierarchical knowledge is critical for reasoning about complex procedures, most existing work has treated procedures as shallow structures without modeling the parent-child relation. In this work, we attempt to construct an open-domain hierarchical knowledge-base (KB) of procedures based on wikiHow, a website containing more than 110k instructional articles, each documenting the steps to carry out a complex procedure. To this end, we develop a simple and efficient method that links steps (e.g., "purchase a camera") in an article to other articles with similar goals (e.g., "how to choose a camera"), recursively constructing the KB. Our method significantly outperforms several strong baselines according to automatic evaluation, human judgment, and application to downstream tasks such as instructional video retrieval. A demo with partial data can be found at https://wikihow-hierarchy.github.io. The code and the data are at https://github.com/shuyanzhou/wikihow_hierarchy.
