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In recent years, deep matrix factorization has shown promising results in mitigating this issue. Furthermore, many works have improved the prediction accuracy of deep matrix factorization by incorporating the user\u2019s and\/or items\u2019 auxiliary information. However, there are still two remaining drawbacks that need to be addressed. First, the initialization of latent feature representations has a substantial impact on the performance of deep matrix factorization, and most current models utilize a uniform approach to this initialization, constraining the model\u2019s optimization potential. Secondly, many existing recommendation models lack versatility and efficiency in transferring auxiliary information from users or items to expand the feature space. This paper proposes a novel model to address the issues mentioned above. By using a semi-autoencoder, the pre-trained initialization of the latent feature representation is realized in this paper. Simultaneously, this model assimilates auxiliary information, like item attributes or rating matrices from diverse domains, to generate their latent feature representations. These representations are then transferred to the target task through subspace projection distance. With this, this model can utilize auxiliary information from various sources more efficiently and this model has better versatility. This is called deep matrix factorization via feature subspace transfer. Numerical experiments on several real-world data show the improvement of this method compared with state-of-the-art methods of introducing auxiliary information about items. Compared with the deep matrix factorization model, the proposed model can achieve 6.5% improvement at most in the mean absolute error and root mean square error.<\/jats:p>","DOI":"10.1007\/s40747-024-01414-2","type":"journal-article","created":{"date-parts":[[2024,4,15]],"date-time":"2024-04-15T09:01:59Z","timestamp":1713171719000},"page":"4939-4954","update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Deep matrix factorization via feature subspace transfer for recommendation system"],"prefix":"10.1007","volume":"10","author":[{"given":"Weichen","family":"Wang","sequence":"first","affiliation":[]},{"given":"Jing","family":"Wang","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2024,4,15]]},"reference":[{"key":"1414_CR1","doi-asserted-by":"publisher","first-page":"321","DOI":"10.1007\/s12293-017-0227-4","volume":"10","author":"X Zhao","year":"2018","unstructured":"Zhao X, Ma Z, Zhang Z (2018) A novel recommendation system in location-based social networks using distributed ELM. 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