Factorization in Z[x]: the searching phase

Factorization in Z[x]: the searching phase
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Z[x] 中的因式分解:搜索阶段

DOI:
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发表时间:
2000
期刊:
International Symposium on Symbolic and Algebraic Computation
影响因子:
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通讯作者:
P. Zimmermann
P. Zimmermann
中科院分区:
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文献类型:
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作者:
J. Abbott;V. Shoup;P. Zimmermann

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在本文中,我们描述了用于加速Berlekamp-Zassenhaus算法的搜索阶段的想法,该算法最广泛地用于计算Z[x]中的因子分解。我们的想法不会改变理论上的最坏情况复杂度,但它们在实践中确实有显著的影响:特别是在搜索阶段的成本完全主导算法其余部分的情况下。本文中思想的完整实现可在图书馆NTL中公开获得[16]。我们给出了一些困难的因式分解问题的实现时间。
In this paper we describe ideas used to accelerate the Searching Phase of the Berlekamp—Zassenhaus algorithm, the algorithm most widely used for computing factorizations in Z[x]. Our ideas do not alter the theoretical worst-case complexity, but they do have a significant effect in practice: especially in those cases where the cost of the Searching Phase completely dominates the rest of the algorithm. A complete implementation of the ideas in this paper is publicly available in the library NTL [16]. We give timings of this implementation on some difficult factorization problems.