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- W4387426802 abstract "Traditional Named Entity Recognition (NER) research only deals with flat entities and ignores nested entities. The transition-based method maps a sentence to a designated forest to recognize nested entities by predicting an action sequence through a state transition system which includes transition actions and a state of structures. However, the subsequent transition actions are affected by the previous transition actions resulting in error propagation, and the method ignores the correlation between the structures. To tackle these issues, we propose a new transition-based attention model (NTAM) to recognize nested entities. First, the structures and transition actions of the state transition system are redefined to eliminate error propagation. The prediction of an action sequence is converted to the prediction of a series of states, which predict whether the words between the structures can form entities. Second, we introduce an attention mechanism that strengthens the association between the structures. Experiments on two public nested NER datasets outperform previous state-of-the-art models." @default.
- W4387426802 created "2023-10-08" @default.
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- W4387426802 date "2023-01-01" @default.
- W4387426802 modified "2023-10-18" @default.
- W4387426802 title "NTAM: A New Transition-Based Attention Model for Nested Named Entity Recognition" @default.
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- W4387426802 doi "https://doi.org/10.1007/978-3-031-44696-2_22" @default.
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