skip to main content

DOE PAGESDOE PAGES

This content will become publicly available on October 30, 2018

Title: MPI-FAUN: An MPI-Based Framework for Alternating-Updating Nonnegative Matrix Factorization

Non-negative matrix factorization (NMF) is the problem of determining two non-negative low rank factors W and H, for the given input matrix A, such that A≈WH. NMF is a useful tool for many applications in different domains such as topic modeling in text mining, background separation in video analysis, and community detection in social networks. Despite its popularity in the data mining community, there is a lack of efficient parallel algorithms to solve the problem for big data sets. The main contribution of this work is a new, high-performance parallel computational framework for a broad class of NMF algorithms that iteratively solves alternating non-negative least squares (NLS) subproblems for W and H. It maintains the data and factor matrices in memory (distributed across processors), uses MPI for interprocessor communication, and, in the dense case, provably minimizes communication costs (under mild assumptions). The framework is flexible and able to leverage a variety of NMF and NLS algorithms, including Multiplicative Update, Hierarchical Alternating Least Squares, and Block Principal Pivoting. Our implementation allows us to benchmark and compare different algorithms on massive dense and sparse data matrices of size that spans from few hundreds of millions to billions. We demonstrate the scalability ofmore » our algorithm and compare it with baseline implementations, showing significant performance improvements. The code and the datasets used for conducting the experiments are available online.« less
Authors:
ORCiD logo [1] ; ORCiD logo [2] ;  [3]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Wake Forest Univ., Winston-Salem, NC (United States)
  3. Georgia Inst. of Technology, Atlanta, GA (United States)
Publication Date:
Grant/Contract Number:
AC05-00OR22725; IIS-1348152; ACI-1338745; ACI-1642385; FA8750-12-2-0309; FA9550-13-1-0100
Type:
Accepted Manuscript
Journal Name:
IEEE Transactions on Knowledge and Data Engineering
Additional Journal Information:
Journal Volume: 30; Journal Issue: 3; Journal ID: ISSN 1041-4347
Publisher:
IEEE
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Science (SC); National Science Foundation (NSF); US Air Force Office of Scientific Research (AFOSR)
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING; Program processors; Computational modeling; Algorithm design and analysis; Sparse matrices; Approximation algorithms; Collaboration; Analytical models; HPC; NMF; MPI; 2D
OSTI Identifier:
1429224