RECEIVED 16 October 2014 REVISED 12 April 2015 ACCEPTED 6 June 2015 Extracting relations from traditional chinese medicine literature via heterogeneous entity networks Huaiyu Wan1,2, Marie-Francine Moens3, Walter Luyten4, Xuezhong Zhou2, Qiaozhu Mei5, Lu Liu6, Jie Tang1,* ABSTRACT .................................................................................................................................................... Objective Traditional Chinese medicine (TCM) is a unique and complex medical system that has developed over thousands of years. This article studies the problem of automatically extracting meaningful relations of entities from TCM literature, for the purposes of assisting clinical treatment or poly-pharmacology research and promoting the understanding of TCM in Western countries. Methods Instead of separately extracting each relation from a single sentence or document, we propose to collectively and globally extract multiple types of relations (eg, h
