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Ltd"}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["ACM Trans. Knowl. Discov. Data"],"published-print":{"date-parts":[[2023,11,30]]},"abstract":"<jats:p>User cold-start scenarios pose great challenges to recommendation systems in accurately capturing user preferences with sparse interaction records. Besides incorporating auxiliary information to enrich user\/item representations, recent studies under the schema of meta-learning focus on quickly adapting personalized recommendation models based on cold-start users\u2019 scarce interactions. The majority of meta-learning based recommendation methods follow a bi-level optimization paradigm and learn globally shared initialization across all cold-start recommendation tasks. In addition, to further facilitate the ability of fast adaptation, existing methods have made efforts to tailor task-specific prior knowledge by identifying the individual characteristics of each task. However, we argue that multi-view commonalities between existing users and cold-start users are also essential for precisely distinguishing new tasks, but not comprehensively modeled in previous studies. In this article, we propose a multifaceted relation-aware meta-learning approach namely MeCM for user cold-start recommendation, which enhances task-adaptive initialization customization by extracting multiple views of task relevance. We design a dual customization framework consisting of two successive phases including cluster-level customization and task-level customization. Specifically, MeCM first extracts multifaceted semantic relations between tasks and refines task commonalities into task clusters maintained with memory networks (MNs). Globally learned fast weights corresponding to task clusters are queried to perform cluster-level customization. Then task-level customization is triggered based on contextual information of the target task via interaction-wise encoding. Extensive experiments on real-world datasets demonstrate the superior performance of our model over state-of-the-art meta-learning-based recommendation methods.<\/jats:p>","DOI":"10.1145\/3597458","type":"journal-article","created":{"date-parts":[[2023,5,16]],"date-time":"2023-05-16T12:04:48Z","timestamp":1684238688000},"page":"1-27","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":14,"title":["Multifaceted Relation-aware Meta-learning with Dual Customization for User Cold-start Recommendation"],"prefix":"10.1145","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1752-5423","authenticated-orcid":false,"given":"Chunyang","family":"Wang","sequence":"first","affiliation":[{"name":"Shanghai Jiao Tong University, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6406-4992","authenticated-orcid":false,"given":"Yanmin","family":"Zhu","sequence":"additional","affiliation":[{"name":"Shanghai Jiao Tong University, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2546-3306","authenticated-orcid":false,"given":"Haobing","family":"Liu","sequence":"additional","affiliation":[{"name":"Ocean University of China, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9390-3740","authenticated-orcid":false,"given":"Tianzi","family":"Zang","sequence":"additional","affiliation":[{"name":"Shanghai Jiao Tong University, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8088-607X","authenticated-orcid":false,"given":"Ke","family":"Wang","sequence":"additional","affiliation":[{"name":"Shanghai Jiao Tong University, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0207-9643","authenticated-orcid":false,"given":"Jiadi","family":"Yu","sequence":"additional","affiliation":[{"name":"Shanghai Jiao Tong University, China"}]}],"member":"320","published-online":{"date-parts":[[2023,7,18]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1109\/IJCNN.2019.8852100"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1145\/3397271.3401426"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1145\/2988450.2988454"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1145\/3460198"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1145\/3394486.3403113"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1109\/TKDE.2022.3168775"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.1145\/3292500.3330726"},{"key":"e_1_3_2_9_2","first-page":"1126","volume-title":"Proceedings of the ICML","author":"Finn Chelsea","year":"2017","unstructured":"Chelsea Finn, Pieter Abbeel, and Sergey Levine. 2017. 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