Papers › Multi-Grained Named Entity Recognition
Multi-Grained Named Entity Recognition
Congying Xia, Chenwei Zhang, Tao Yang, Yaliang Li, Nan Du, Xian Wu, Wei Fan, Fenglong Ma, Philip Yu
This paper presents a novel framework, MGNER, for Multi-Grained Named Entity Recognition where multiple entities or entity mentions in a sentence could be non-overlapping or totally nested. Different from traditional approaches regarding NER as a sequential labeling task and annotate entities consecutively, MGNER detects and recognizes entities on multiple granularities: it is able to recognize named entities without explicitly assuming non-overlapping or totally nested structures. MGNER consists of a Detector that examines all possible word segments and a Classifier that categorizes entities. In addition, contextual information and a self-attention mechanism are utilized throughout the framework to improve the NER performance. Experimental results show that MGNER outperforms current state-of-the-art baselines up to 4.4% in terms of the F1 score among nested/non-overlapping NER tasks.
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Code
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Tasks
Results from the paper archive 2025-07-28
| Task | Dataset | Model | Metric | Value | Rank at snapshot | Leaderboard | Report |
|---|---|---|---|---|---|---|---|
| Named Entity Recognition (NER) | ACE 2004 | MGNER | F1 | 79.5 | #7 of 9 | Archive leaderboard | report |
| Named Entity Recognition (NER) | ACE 2004 | MGNER | Multi-Task Supervision | n | #7 of 9 | Archive leaderboard | report |
| Named Entity Recognition (NER) | ACE 2005 | MGNER | F1 | 78.2 | #15 of 20 | Archive leaderboard | report |
| Named Entity Recognition (NER) | CoNLL 2003 (English) | MGNER | F1 | 92.28 | #46 of 73 | Archive leaderboard | report |
| Nested Mention Recognition | ACE 2004 | MGNER | F1 | 79.5 | #5 of 7 | Archive leaderboard | report |
| Nested Mention Recognition | ACE 2005 | MGNER | F1 | 78.2 | #5 of 10 | Archive leaderboard | report |
| Nested Named Entity Recognition | ACE 2004 | MGNER | F1 | 79.5 | #21 of 24 | Archive leaderboard | report |
| Nested Named Entity Recognition | ACE 2005 | MGNER | F1 | 78.2 | #19 of 25 | Archive leaderboard | report |
Ranks are positions in the archive's leaderboards as they stood at the 2025-07-28 snapshot. Results published since then are not among these rows, so a rank here is not a current standing.
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