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More recently joint models that address the two tasks together have achieved state-of-the-art performance for each task and have shown there exists a strong relationship between the two. In this survey, we bring the coverage of methods up to 2021 including the many applications of deep learning in the field. As well as a technological survey, we look at issues addressed in the joint task and the approaches designed to address these issues. We cover datasets, evaluation metrics, and experiment design and supply a summary of reported performance on the standard datasets.<\/jats:p>","DOI":"10.1145\/3547138","type":"journal-article","created":{"date-parts":[[2022,7,9]],"date-time":"2022-07-09T05:14:08Z","timestamp":1657343648000},"page":"1-38","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":123,"title":["A Survey of Joint Intent Detection and Slot Filling Models in Natural Language Understanding"],"prefix":"10.1145","volume":"55","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6628-0290","authenticated-orcid":false,"given":"Henry","family":"Weld","sequence":"first","affiliation":[{"name":"The University of Sydney, Sydney, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8287-9447","authenticated-orcid":false,"given":"Xiaoqi","family":"Huang","sequence":"additional","affiliation":[{"name":"The University of Sydney, Sydney, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0590-7587","authenticated-orcid":false,"given":"Siqu","family":"Long","sequence":"additional","affiliation":[{"name":"The University of Sydney, Sydney, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3371-8628","authenticated-orcid":false,"given":"Josiah","family":"Poon","sequence":"additional","affiliation":[{"name":"The University of Sydney, Sydney, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1948-6819","authenticated-orcid":false,"given":"Soyeon Caren","family":"Han","sequence":"additional","affiliation":[{"name":"The University of Sydney, Sydney, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"320","published-online":{"date-parts":[[2022,12,23]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.21437\/Interspeech.2018-2256"},{"key":"e_1_3_2_3_2","volume-title":"Proceedings of the 6th Italian Conference on Computational Linguistics","author":"Bellomaria Valentina","year":"2019","unstructured":"Valentina Bellomaria, Giuseppe Castellucci, Andrea Favalli, and Raniero Romagnoli. 2019. 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