A Newton algorithm for invariant subspace computation with large basins of attraction

P. A. Absil*, R. Sepulchre, P. Van Dooren, R. Mahony

*Corresponding author for this work

    Research output: Contribution to journalConference articlepeer-review

    1 Citation (Scopus)

    Abstract

    We study the global behaviour of a Newton algorithm on the Grassmann manifold for invariant subspace computation. It is shown that the basins of attraction of the invariant subspaces may collapse in case of small eigenvalue gaps. A Levenberg-Marquardt-like modification of the algorithm with low numerical cost is proposed. A simple strategy for choosing the parameter is shown to dramatically enlarge the basins of attraction of the invariant subspaces while preserving the fast local convergence.

    Original languageEnglish
    Pages (from-to)2352-2357
    Number of pages6
    JournalProceedings of the IEEE Conference on Decision and Control
    Volume3
    Publication statusPublished - 2003
    Event42nd IEEE Conference on Decision and Control - Maui, HI, United States
    Duration: 9 Dec 200312 Dec 2003

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