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Noise reduction in BERT NER models for clinical entity extraction

arXiv – CS AI|Kuldeep Jiwani, Yash K Jeengar, Ayush Dhaka||1 views
🤖AI Summary

Researchers developed a Noise Removal model to improve precision in clinical entity extraction using BERT-based Named Entity Recognition systems. The model uses advanced features like Probability Density Maps to identify weak vs strong predictions, reducing false positives by 50-90% in clinical NER applications.

Key Takeaways
  • Pre-trained BERT models for clinical NER showed good recall but struggled with precision requirements for medical applications.
  • Simple probability thresholding is ineffective due to SoftMax function characteristics that assign high confidence to uncertain predictions.
  • The Noise Removal model leverages Probability Density Maps to capture semantic patterns in transformer embeddings.
  • The approach achieved 50-90% reduction in false positives across various clinical NER models.
  • Supervised modeling strategy outperformed naive filtering approaches for improving clinical entity extraction accuracy.
Read Original →via arXiv – CS AI
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