Papers by Enwei Zhu
Revisiting De-Identification of Electronic Medical Records: Evaluation of Within- and Cross-Hospital Generalization (2023.emnlp-main)
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| Challenge: | De-identification is a natural language processing task to detect and remove the protected health information (PHI) from electronic medical records (EMRs). |
| Approach: | They propose a de-identification dataset comprising EMRs from three hospitals in China and use it to establish a benchmark for evaluating both within- and cross-hospital generalization. |
| Outcome: | The proposed model with almost perfect within-hospital performance struggles when transferred across hospitals. |
Boundary Smoothing for Named Entity Recognition (2022.acl-long)
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| Challenge: | Named entity recognition models often encounter over-confidence issues . boundary smoothing is a method that re-assigns entity probabilities from annotated spans to the surrounding ones . |
| Approach: | They propose a method for regularizing entity probabilities from annotated spans to the surrounding ones. |
| Outcome: | The proposed method achieves better than or competitive with previous state-of-the-art systems on well-known benchmarks. |
Deep Span Representations for Named Entity Recognition (2023.findings-acl)
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| Challenge: | Existing span-based NER systems shallowly aggregate token representations to span representations, causing performance degradations. |
| Approach: | They propose a method that shallowly aggregates token representations to span representations . DSpERT produces span representation of deep semantics with weight initialization . |
| Outcome: | The proposed model performs better than or competitive with state-of-the-art systems on six NER benchmarks. |