Fig. 1From: Matrix factorization for the reconstruction of cervical cancer screening histories and prediction of future screening resultsMatrix representation of cervical cancer screening histories. Individual cervical cancer screening histories as sparse time series fitted into a matrix \({\mathbf {Y}}\). A green/yellow square indicates normal/low-risk state, and an orange cross denotes a high-risk/cancer state. The matrix columns corresponds to female age intervals of 3 monthsBack to article page