Semi-supervised Relation Extraction with Large-scale Word Clustering
Ang Sun, Ralph Grishman, Satoshi Sekine · 2011
We present a simple semi-supervised relation extraction system with large-scale word clustering. We focus on systematically exploring the effectiveness of different cluster-based features. We also propose several statistical methods for selecting clusters at an appropriate level of granularity. When training on different sizes of data, our semi-supervised approach consistently outperformed a state-of-the-art supervised baseline system. 1