Research of Extraction on Petroleum Unstructured Information Based on Named Entity Recognition
ZHONG Yuan, LIU Xiaorong, WANG Jie, CHEN Yan, ZHANG Tai
Journal of Southwest Petroleum University(Science & Technology Edition) . 2020, (6): 165 -173 .  DOI: 10.11885/j.issn.1674-5086.2020.05.12.01