A kind of entity recognition algorithm based on Hadoop for power big data Jun Qi, Weichun Ge, Zhao Li, Wei Li, Hongyu Zhang, Jinghong Zhao, Chengming Jin, Liangliang Yu, Shuo Chen, Biqi Liu and Mingyu Yang MATEC Web Conf., 189 (2018) 03005 Published online: 10 August 2018 DOI: 10.1051/matecconf/201818903005