{"type":"ScholarlyArticle","title":"Matrix Co-Factorization on Compressed Sensing","authors":[{"name":"Jiho Yoo","slug":"jiho-yoo","given":"Jiho","family":"Yoo","affiliation":""},{"name":"Seungjin Choi","slug":"seungjin-choi","given":"Seungjin","family":"Choi","affiliation":""}],"abstract":"In this paper we address the problem of matrix factorization on compressively-sampled measurements which are obtained by random projections. While this approach improves the scalability of matrix factorization, its performance is not satisfactory. We present a matrix co-factorization method where compressed measurements and a small number of uncompressed measurements are jointly decomposed, sharing a factor matrix. We evaluate the performance of three matrix factorization methods in terms of Cram{'e}r-Rao bounds, including: (1) matrix factorization on uncompressed data (MF); (2) matrix factorization on compressed data (CS-MF); (3) matrix co-factorization on compressed and uncompressed data (CS-MCF). Numerical experiments demonstrate that CS-MCF improves the performance of CS-MF, emphasizing the useful behavior of exploiting side information (a small number of uncompressed measurements).","doi":"10.5591/978-1-57735-516-8/IJCAI11-268","url":"https://ijcai.org/proceedings/2011/268","pdf":"https://ijcai.org/proceedings/2011/0268.pdf","markdown":"https://ijcai.org/proceedings/2011/268.md","bibtex":"https://ijcai.org/proceedings/2011/bibtex/268","volume":{"slug":"2011","title":"Proceedings of the Twenty-Second International Joint Conference on Artificial Intelligence","short_title":"IJCAI 2011","url":"https://ijcai.org/proceedings/2011/","year":2011,"location":"Barcelona, Catalonia, Spain","dates":"16–22 July 2011","editors":"Toby Walsh","isbn":"978-1-57735-512-0; 978-1-57735-513-7; 978-1-57735-514-4; 978-1-57735-515-1; 978-1-57735-516-8","publisher":"AAAI Press/International Joint Conferences on Artificial Intelligence","doi_prefix":""},"section":null,"track":"","number":268,"pages":{"first":1595,"last":1601},"keywords":[],"videos":[],"references":[],"license_note":"Copyright International Joint Conferences on Artificial Intelligence."}