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    题名: Balancing the lifting values to improve the numerical stability of polyhedral homotopy continuation methods
    作者: Li, Tien-yien;Gao, Tan-gan;Verschelde, Jan;Wu, Meng-nien
    贡献者: 淡江大學數學學系
    关键词: Polyhedral homotopies;Path following;Numerical stability;Balancing
    日期: 2000-09-01
    上传时间: 2011-10-01 21:03:50 (UTC+8)
    摘要: Polyhedral homotopy continuation methods exploit the sparsity of polynomial systems so that the number of solution curves to reach all isolated solutions is optimal for generic systems. The numerical stability of tracing solution curves of polyhedral homotopies is mainly determined by the height of the powers of the continuation parameter. To reduce this height, we propose a procedure that operates as an intermediate stage between the mixed-volume computation and the tracing of solution curves. This procedure computes new lifting values of the support of a polynomial system. These values preserve the structure of the mixed-cell configuration obtained from the mixed-volume computation and produce better-balanced powers of the continuation parameter in the polyhedral homotopies.
    關聯: Applied mathematics and computation 114(2-3), pp.233-247
    DOI: 10.1016/S0096-3003(99)00115-0
    显示于类别:[數學學系暨研究所] 期刊論文


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