• Sparse Nonnegative Matrix Factorization for Clustering 

      Kim, Jingu; Park, Haesun (Georgia Institute of Technology, 2008)
      Properties of Nonnegative Matrix Factorization (NMF) as a clustering method are studied by relating its formulation to other methods such as K-means clustering. We show how interpreting the objective function of K-means ...
    • Toward Faster Nonnegative Matrix Factorization: A New Algorithm and Comparisons 

      Kim, Jingu; Park, Haesun (Georgia Institute of Technology, 2008)
      Nonnegative Matrix Factorization (NMF) is a dimension reduction method that has been widely used for various tasks including text mining, pattern analysis, clustering, and cancer class discovery. The mathematical formulation ...