Named entity recognition (NER) is a widely applicable natural language processing task and building block of question answering, topic modeling, information retrieval, etc. In the medical domain, NER plays a crucial role by extracting meaningful chunks from clinical notes and reports, which are then fed to downstream tasks like assertion status detection, entity resolution, relation extraction, and de-identification. Reimplementing a Bi-LSTM-CNN-Char deep learning architecture on top of Apache Spark, we present a single trainable NER model that obtains new state-of-the-art results on seven public biomedical benchmarks without using heavy contextual embeddings like BERT. This includes improving BC4CHEMD to 93.72% (4.1% gain), Species800 to 80.91% (4.6% gain), and JNLPBA to 81.29% (5.2% gain). In addition, this model is freely available within a production-grade code base as part of the open-source Spark NLP library; can scale up for training and inference in any Spark cluster; has GPU support and libraries for popular programming languages such as Python, R, Scala and Java; and can be extended to support other human languages with no code changes.

通过在Apache Spark之上重新实现Bi-LSTM-CNN-Char深度学习架构，我们提出了一个单可训练的命名实体识别（NER）模型，该模型在七个公共生物医学基准测试中获得了新的最优结果，而不使用像BERT这样的重​​型上下文嵌入。该模型在生产级别代码库中作为开源Spark NLP库的一部分免费提供，并且可以扩展以支持其他人类语言，而不需要更改代码。

大规模生物医学命名实体识别