Search Results 1-6 of 6

  • Low-Complexity Exploration in Utility Hypergraphs

    Hadfi Rafik , Ito Takayuki

    … A novel representation for nonlinear utility spaces is provided, by adopting a modular decomposition of the issues and the constraints. … The idea is that constraint-based utility spaces are nonlinear with respect to issues, but linear with respect to the constraints. … The result is a mapping from a utility space into an issue-constraint hypergraph. …

    Journal of information processing 23(2), 176-184, 2015-03-15

    IPSJ  J-STAGE 

  • Low-Complexity Exploration in Utility Hypergraphs

    Rafik Hadfi , Takayuki Ito

    … A novel representation for nonlinear utility spaces is provided, by adopting a modular decomposition of the issues and the constraints. … The idea is that constraint-based utility spaces are nonlinear with respect to issues, but linear with respect to the constraints. … The result is a mapping from a utility space into an issue-constraint hypergraph. …

    IPSJ Journal 56(3), 2015-03-15

    IPSJ 

  • Complex Multi-Issue Negotiation Using Utility Hyper-Graphs

    Hadfi Rafik , Ito Takayuki

    … <p>We propose to handle the complexity of utility spaces used in multi-issue negotiation by adopting a new representation that allows a modular decomposition of the issues and the constraints. … This is based on the idea that a constraint-based utility space is nonlinear with respect to issues, but linear with respect to the constraints. … This allows us to rigorously map the utility space into an issue-constraint hyper-graph. …

    Journal of Advanced Computational Intelligence and Intelligent Informatics 19(4), 514-522, 2015

    J-STAGE 

  • Representation of Preference Orderings with an Infinite Horizon : Time-additive Separable Utility in Continuous Time

    SAGARA Nobusumi

    … This paper proposes an axiomatic approach in a continuous-time framework for representing preference orderings with an infinite horizon in terms of time-additive separable (TAS) utility. … To deal with divergent paths that emerge in endogenous growth models, we introduce several new axioms for preference orderings and exploit an integral representation of nonlinear functionals on Lp-spaces to obtain TAS utility functions with constant discount rates. …

    Journal of International Economic Studies (27), 3-22, 2013-03

    IR  DOI 

  • An Automated Consensus Mechanism Based on Adjustment of Issue-groups for Multi-issue Negotiation  [in Japanese]

    藤田 桂英 , 伊藤 孝行 , マーククライン

    … Most real-world negotiation involves multiple interdependent issues, which makes an agent's utility functions nonlinear. … Traditional negotiation mechanisms, which were designed for linear utilities, do not fare well in nonlinear contexts. … One of the main challenges in developing effective nonlinear negotiation protocols is scalability; …

    情報処理学会論文誌 52(4), 1727-1738, 2011-04-15

    IPSJ  IR 

  • Interdependency Rate and Scalable Protocol for Multiple Interdependent Issues Negotiation  [in Japanese]

    FUJITA KATSUHIDE , ITO TAKAYUKI , KLEIN MARK

    … スケーラビリティが不十分であった.本論文では,論点間の依存関係に基づいて論点グループを生成し合意形成を行う手法を提案する.また,論点グループ生成に有効な相互依存関係指標を提案する.シミュレーション実験により提案手法が既存の手法と比較して高いスケーラビリティであることを示す.Most real-world negotiation involves multiple interdependent issues, which makes an agent's utility functions nonlinear. …

    情報処理学会研究報告. ICS, [知能と複雑系] 159, G1-G6, 2010-03-15

    References (12)

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