Hoai-Duc Tuan-Nguyen Hoai-Duc Tuan-Nguyen, Thanh-Quyen Doan-Thi Thanh-Quyen Doan-Thi, Mi-Ni Tran-Thi Mi-Ni Tran-Thi, Bao Quoc Ho Bao Quoc Ho

Relationship extraction is a vital task which is required for many research fields such as Ontology construction or Q - A systems. Good results have been reached for widely used languages such as English while the achievement for Vietnamese is still limited. This paper presents a relationship extractor for Vietnamese which is trained with semi-supervised learning. A set of metrics is employed to qualify extraction result. And a simple NER system is integrated to boost the extractor's efficiency