Unsupervised Extraction of Attributes and Their Values from Product Description Keiji Shinzato author Satoshi Sekine author 2013-10 text Proceedings of the Sixth International Joint Conference on Natural Language Processing Ruslan Mitkov editor Jong C Park editor Asian Federation of Natural Language Processing Nagoya, Japan conference publication shinzato-sekine-2013-unsupervised https://aclanthology.org/I13-1190/ 2013-10 1339 1347