# CliNER 2.0: Accessible and Accurate Clinical Concept Extraction

## TL;DR

CliNER 2.0 is an open-source tool that leverages LSTM models for accurate clinical concept extraction from medical notes, facilitating downstream clinical decision-making tasks.

## Contribution

This paper introduces CliNER 2.0, a user-friendly, open-source LSTM-based system that achieves state-of-the-art performance in clinical concept extraction.

## Key findings

- Achieves state-of-the-art performance in clinical concept extraction
- Includes pre-trained models for easy application
- Provides a simple, installable tool for clinical text analysis

## Abstract

Clinical notes often describe important aspects of a patient's stay and are therefore critical to medical research. Clinical concept extraction (CCE) of named entities - such as problems, tests, and treatments - aids in forming an understanding of notes and provides a foundation for many downstream clinical decision-making tasks. Historically, this task has been posed as a standard named entity recognition (NER) sequence tagging problem, and solved with feature-based methods using handengineered domain knowledge. Recent advances, however, have demonstrated the efficacy of LSTM-based models for NER tasks, including CCE. This work presents CliNER 2.0, a simple-to-install, open-source tool for extracting concepts from clinical text. CliNER 2.0 uses a word- and character- level LSTM model, and achieves state-of-the-art performance. For ease of use, the tool also includes pre-trained models available for public use.