Chengzhi Zhang Philipp Mayr 0001 Wei Lu 0019 Yi Zhang 0095 Extraction and Evaluation of Knowledge Entities from Scientific Documents. 1-5 2021 6 J. Data Inf. Sci. 3 https://doi.org/10.2478/jdis-2021-0025 db/journals/jdis/jdis6.html#ZhangMLZ21