注释的命名实体识别数据集，用于预测化学实体的命名实体识别数据集
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This corpus is divided into training, validation and evaluation. All of them contains tokens extracted using ChemTok applied on CHEMDNER corpora in IOB annotation. File contains the following content. NOTE: Please refer README guide from the original corpora or links provided for in-depth information on this subject. Krallinger, M. et al. The CHEMDNER corpus of chemicals and drugs and its annotation principles. J Cheminform, 2014
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