HealthAid: Extracting domain targeted high precision procedural knowledge from online communities.

HealthAidKB, a Knowledge Base, is the result of an automatic extraction and clustering pipeline of common procedural knowledge in the domain of health. Our goal is to construct domain targeted high precision procedural knowledge base containing task frames. We developed a pipeline of methods leveraging Open IE to extract procedural knowledge by tapping into on-line communities. In addition, we devise a mechanism to canonicalize the task frames into clusters based on the similarity of the problems they intend to solve. The resulting knowledge base shows high precision based on an evaluation by human experts in the domain. We extracted the procedural knowledge by tapping into the health category of wiki how (https://www.wikihow.com/Category:Health ) and how to cure (https://howtocure.com/).