H
Hiroaki Ishii
Researcher at Kwansei Gakuin University
Publications - 221
Citations - 2517
Hiroaki Ishii is an academic researcher from Kwansei Gakuin University. The author has contributed to research in topics: Fuzzy logic & Fuzzy number. The author has an hindex of 26, co-authored 219 publications receiving 2398 citations. Previous affiliations of Hiroaki Ishii include Osaka University.
Papers
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Interval priorities in AHP by interval regression analysis
TL;DR: An interval approach for obtaining interval weights of priorities in the analytic hierarchy process (AHP) reflecting inconsistency of pairwise comparison ratios given by a decision maker is proposed.
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The appropriate total ranking method using DEA for multiple categorized purposes
TL;DR: It is shown that the total ordinal rank of objects may produce a different result according to the difference of the weights between ranks, and a new ordering to solve the weights of ranks is proposed by considering feasible solutions' region of the constraint set in LP.
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A method for discriminating efficient candidates with ranked voting data
Tsuneshi Obata,Hiroaki Ishii +1 more
TL;DR: This paper proposes a new method for ranked voting data that does not use information about inefficient candidates to discriminate efficient candidates, based on a very simple idea, and is realizable visually.
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Stochastic spanning tree problem
TL;DR: A polynomial order algorithm fully utilizing P(R) is proposed, which is a stochastic spanning tree problem in which edge costs are not constant but random variables and its objective is to find an optimal spanning tree satisfying a certain chance constraint.
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A stochastic inventory problem with fuzzy shortage cost
Hiroaki Ishii,Tsutomu Konno +1 more
TL;DR: This paper investigates the so-called fuzzy newsboy problem where its shortage cost is vague and given by an L shape fuzzy number, and finds an optimal ordering quantity realizing the fuzzy max order of the profit function (fuzzy min order considering the Profit function).