Papers with feature-rich HMM
Bridging Pre-trained Language Models and Hand-crafted Features for Unsupervised POS Tagging (2022.findings-acl)
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| Challenge: | Large-scale pre-trained language models (PLMs) have made extraordinary progress in most NLP tasks, but they fail to achieve state-of-the-art (SOTA) performance. |
| Approach: | They propose a Guassian HMM variant for unsupervised POS tagging that incorporates contexualized word representations into the decoder. |
| Outcome: | The proposed model outperforms state-of-the-art models on Penn Treebank and multilingual Universal Dependencies treebank v2.0. |