WIAS Preprint No. 1697, (2012)

On the efficiency and robustness of the core routine of the quadrature method of moments (QMOM)



Authors

  • John, Volker
    ORCID: 0000-0002-2711-4409
  • Thein, Ferdinand

2010 Mathematics Subject Classification

  • 65D30

Keywords

  • Quadrature Method of Moments, optimal quadrature rules, Product-Difference Algorithm, Long Quotient-Modified Difference Algorithm, Golub--Welsch Algorithm

Abstract

Three methods are reviewed for computing optimal weights and abscissas which can be used in the Quadrature Method of Moments (QMOM): the Product-Difference Algorithm (PDA), the Long Quotient-Modified Difference Algorithm (LQMDA, variants are also called Wheeler algorithm or Chebyshev algorithm), and the Golub--Welsch Algorithm (GWA). The PDA is traditionally used in applications. It is discussed that the PDA fails in certain situations whereas the LQMDA and the GWA are successful. Numerical studies reveal that the LQMDA is also more efficient than the PDA.

Appeared in

  • Chem. Engng. Sci., 75 (2012) pp. 327--333.

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