Sparsity issues in the computation of Jacobian matrices

  • Authors:
  • Shahadat Hossain;Trond Steihaug

  • Affiliations:
  • University of Lethbridge, Lethbridge, Alberta, Canada;University of Bergen, Bergen, Norway

  • Venue:
  • Proceedings of the 2002 international symposium on Symbolic and algebraic computation
  • Year:
  • 2002

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Abstract

The knowledge of sparsity information plays an important role in efficient determination of sparse Jacobian matrices. In a recent work, we have proposed sparsity-exploiting substitution techniques to determine Jacobian matrices. In this paper, we take a closer look at the underlying combinatorial problem. We propose a column ordering heuristic to augment the "usable sparsity" in the Jacobian matrix. Furthermore, we present a new elimination technique based on merging of successive columns.