Guidelines & Tools Postive Matrix Factorization (PMF) V. 5 Share SHARE Facebook share Twitter LinkedIn Copy URL Email Download Download positive-matrix-factorization-model-environmental-data-analyses en Added on: 20 May, 2025 Breadcrumb Home Resource Library Postive Matrix Factorization (PMF) V. 5 The Positive Matrix Factorization Model is a multivariate factor analysis tool that decomposes a matrix of speciated sample data into two matrices: factor contributions and factor profiles. These factor profiles need to be interpreted by the user to identify the source types that may be contributing to the sample using measured source profile information, and emissions or discharge inventories.