This paper presents the fourth edition of the Bacteria Biotope task at BioNLP Open Shared Tasks 2019. The task focuses on the extraction of the locations and phenotypes of microorganisms from PubMed abstracts and full-text excerpts, and the characterization of these entities with respect to reference knowledge sources (NCBI taxonomy. OntoBiotope ontology). The task is motivated by the importance of the knowledge on biodiversity for fundamental research and applications in microbiology. The paper describes the different proposed subtasks, the corpus characteristics, and the challenge organization. We also provide an analysis of the results obtained by participants, and inspect the evolution of the results since the last edition in 2016.
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机译：本文在BioNLP Open Shared Tasks 2019上介绍了细菌生物群落任务的第四版。该任务着重于从PubMed摘要和全文摘录中提取微生物的位置和表型，以及对这些实体的特征进行参考知识来源（NCBI分类法。OntoBiotope本体）。这项任务的动机是生物多样性知识对于微生物学的基础研究和应用的重要性。本文描述了提出的不同子任务，语料库特征和挑战组织。我们还对参与者获得的结果进行了分析，并检查了自2016年上一版以来结果的演变。
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