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Joint Identifiability of Cross-Domain Recommendation via Hierarchical Subspace Disentanglement
April 9, 2024, 4:42 a.m. | Jing Du, Zesheng Ye, Bin Guo, Zhiwen Yu, Lina Yao
cs.LG updates on arXiv.org arxiv.org
Abstract: Cross-Domain Recommendation (CDR) seeks to enable effective knowledge transfer across domains. Existing works rely on either representation alignment or transformation bridges, but they struggle on identifying domain-shared from domain-specific latent factors. Specifically, while CDR describes user representations as a joint distribution over two domains, these methods fail to account for its joint identifiability as they primarily fixate on the marginal distribution within a particular domain. Such a failure may overlook the conditionality between two domains …
abstract alignment arxiv cs.ai cs.ir cs.lg distribution domain domains hierarchical knowledge recommendation representation struggle transfer transformation type via
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