About Umetani Shunji
About Osaka University, Suita, Osaka, 565-0871, Japan
About Arakawa Masanao
About Fujitsu Limited, Kawasaki 211-8588, Japan
About Yagiura Mutsunori
About Nagoya University, Nagoya 464-8601, Japan
About Computers & Operations Research
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About heuristics
About covering problem
About pricing
About quality
About local search method
About relaxation phenomenon
About multiplex
About 探索アルゴリズム
About 近傍
About 発見的アルゴリズム
About 上界
About combinatorial optimization
About set covering problem
About metaheuristics
About local search
About Lagrangian relaxation
About Process control
About Other methods of operations research
About 一般化
About 上界
About 制約条件
About 集合
About 多重
About 被覆問題
About 緩和
About ヒューリスティックス