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Algorithms for width-parameters of digraphs and their applications

Algorithms for width-parameters of digraphs and their applications
有向图宽度参数算法及其应用
批准号:
23500026
负责人:
TAMAKI Hisao
金额:
$2.91万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (C)
财政年份:
2011
资助国家:
日本
项目状态:
已结题
起止时间:
2011 至 2013

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中文摘要
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英文摘要
For the problem of computing the pathwidth of digraphs, an XP algorithm (with running time n to the O(k), where n is the number of vertices and k is the pathwidth, and an algorithm with running time O(1.89 to the nth), were developed. The first version of the XP algorithm contained an essential flaw, and a considerable amount of time was spent for fixing the error. As applications, FPT algorithms for two-layer graph drawing problems were developed.
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会议论文
A Linear Edge Kernel for Two-Layer Crossing Minimization
一种用于两层交叉最小化的线性边核
DOI: --
发表时间: 2013
期刊: COCOON
影响因子: --
作者: [Yasuaki Kobayashi, Hirokazu Maruta, Yusuke Nakae, Hisao Tamaki]
通讯作者: Hisao Tamaki
Constant-factor approximations of branch-decomposition and largest grid minor of planar graphs in O(n^<1+ϵ>) time
O(n^<1+ϵ>) 时间内平面图的分支分解和最大网格次要常数因子近似
DOI: --
发表时间: 2011
期刊: Theor. Comput. Sci
影响因子: --
作者: [Qian-Ping Gu, Hisao Tamaki]
通讯作者: Hisao Tamaki
Computing Directed Pathwidth in O(1.89^ n ) Time
在 O(1.89^ n ) 时间内计算定向路径宽度
DOI: --
发表时间: 2012
期刊: IPEC 2012
影响因子: --
作者: [Kenta Kitsunai, Yasuaki Kobayashi, Keita Komuro, Hisao Tamaki, Toshihiro Tano]
通讯作者: Toshihiro Tano
Computing Directed Pathwidth in O(1.89 n ) Time
在 O(1.89 n ) 时间内计算定向路径宽度
DOI: --
发表时间: 2011
期刊: IPEC 2012
影响因子: --
作者: [Kenta Kitsunai, Yasuaki Kobayashi, Keita Komuro, Hisao Tamaki, Toshihiro Tano]
通讯作者: Toshihiro Tano
11
    Extending the branch-decomposition algorithm for planar graphs to broader class of graphs
    • 批准号:
      20500022
    • 项目类别:
      Grant-in-Aid for Scientific Research (C)
    • 资助金额:
      $1.33万
    • 财政年份:
      2008
    • 负责人:
      TAMAKI Hisao
    • 依托单位:
    Polynomial time algorithm for dualizing a monotone DNF
    • 批准号:
      10680365
    • 项目类别:
      Grant-in-Aid for Scientific Research (C)
    • 资助金额:
      $0.83万
    • 财政年份:
      1998
    • 负责人:
      TAMAKI Hisao
    • 依托单位:
    Approximation algoirithms for route optimization problems : exploiting geometric structures and application to large scale problems
    • 批准号:
      10205225
    • 项目类别:
      Grant-in-Aid for Scientific Research on Priority Areas (B)
    • 资助金额:
      $5.76万
    • 财政年份:
      1998
    • 负责人:
      TAMAKI Hisao
    • 依托单位:
    海外基金