NTNU: An Unsupervised Knowledge Approach for Taxonomy Extraction Bamfa Ceesay author Wen Juan Hou author 2015-06 text Proceedings of the 9th International Workshop on Semantic Evaluation (SemEval 2015) Preslav Nakov editor Torsten Zesch editor Daniel Cer editor David Jurgens editor Association for Computational Linguistics Denver, Colorado conference publication ceesay-juan-hou-2015-ntnu 10.18653/v1/S15-2156 https://aclanthology.org/S15-2156/ 2015-06 938 943