@inproceedings{yan-etal-2025-hippo, title = "{H}i{PPO}: Exploring A Novel Hierarchical Pronunciation Assessment Approach for Spoken Languages", author = "Yan, Bi-Cheng and Wang, Hsin Wei and Chao, Fu-An and Lo, Tien-Hong and Hsu, Yung-Chang and Chen, Berlin", editor = "Inui, Kentaro and Sakti, Sakriani and Wang, Haofen and Wong, Derek F. and Bhattacharyya, Pushpak and Banerjee, Biplab and Ekbal, Asif and Chakraborty, Tanmoy and Singh, Dhirendra Pratap", booktitle = "Proceedings of the 14th International Joint Conference on Natural Language Processing and the 4th Conference of the Asia-Pacific Chapter of the Association for Computational Linguistics", month = dec, year = "2025", address = "Mumbai, India", publisher = "The Asian Federation of Natural Language Processing and The Association for Computational Linguistics", url = "https://preview.aclanthology.org/ingest-ijcnlp-aacl/2025.ijcnlp-long.45/", pages = "810--823", ISBN = "979-8-89176-298-5" }