Updated on 2022/05/26

写真a

 
OHMORI, Shunichi
 
Affiliation
Faculty of Science and Engineering, School of Creative Science and Engineering
Job title
Associate Professor

Concurrent Post

  • Faculty of Science and Engineering   Graduate School of Creative Science and Engineering

  • Affiliated organization   Global Education Center

Research Institute

  • 2020
    -
    2022

    理工学術院総合研究所   兼任研究員

Education

  • 2009.04
    -
    2012.02

    Waseda University   Graduate School of Creative Science and Engineering  

  • 2007.04
    -
    2009.03

    Waseda University   Graduate School of Creative Science and Engineering  

  • 2004.04
    -
    2007.03

    Waseda University   School of Science and Engineering  

Degree

  • 早稲田大学   博士(工学)

Research Experience

  • 2018.04
    -
    Now

    Waseda University   Faculty of Science and Engineering

  • 2015.04
    -
    2018.03

    Waseda University   Faculty of Science and Engineering

  • 2011.04
    -
    2015.03

    Waseda University   Faculty of Science and Engineering

Professional Memberships

  •  
     
     

    Institute for Operations Research and the Management Sciences

  •  
     
     

    日本ロジスティクスシステム協会

  •  
     
     

    日本IE協会

  •  
     
     

    JAPAN INDUSTRIAL MANAGEMENT ASSOCIATION

 

Research Areas

  • Social systems engineering

  • Safety engineering

Research Interests

  • Industrial Engineering

  • Operations Research

  • Optimization

  • Facility Planning

  • Logistics

  • Supply Chain Management

▼display all

Papers

  • Joint Determination of Supplier Capacity and Returner Incentives in A Closed-Loop Supply Chain

    Alex J Ruiz Torres, Farzad Mahmoodi, Shunichi Ohmori

    Journal of Cleaner Production    2019  [Refereed]

  • The Influence of Shopping Path Length on Sales Growth and Its Variance

    Shunichi Ohmori, Masao Ueda, Kazuho Yoshimoto

    Operations and Supply Chain Management – An International Journal    2019  [Refereed]

  • A Numerical Stability Analysis for Application of Particle Swarm Optimization to Facility Layout Problem

    Shunichi OHMORI, Kazuho YOSHIMOTO

    International Journal on Computer Science and Engineering   10 ( 7 ) 164 - 170  2018.07  [Refereed]

  • Facility Layout System using Interactive Evolutionary Computation

    Shunichi OHMORI, Kazuho YOSHIMOTO

    International Journal on Computer Science and Engineering   10 ( 7 ) 152 - 158  2018.07  [Refereed]

  • A multi-period capacity reservation contract model using sampling average approximaion

    Shunichi OHMORI, Kazuho YOSHIMOTO

    International Journal on Computer Science and Engineering   10 ( 6 ) 152 - 158  2018.07  [Refereed]

  • A Sequence-pair based heuristic for Multi Floor Facility Layout Problem

    Shunichi OHMORI, Kazuho YOSHIMOTO

    International Journal on Computer Science and Engineering   10 ( 6 ) 144 - 151  2018.06  [Refereed]

  • Vehicle Routing Problem for Multi-Transportation Modes

    Shunichi OHMORI, Kazuho YOSHIMOTO, Sirawadee ARUNYANART

    International Journal on Computer Science and Engineering   10 ( 6 ) 135 - 143  2018.06  [Refereed]

  • Vehicle Routing Problem with Subcontracting

    Shunichi Ohmori, Kazuho Yoshimoto

    Journal of Mathematics and System Science   (In press)  2018  [Refereed]

  • Strategic safety stock placement with scenario-based delay

    Shunichi OHMORI, Kazuho YOSHIMOTO

    WSEAS Transactions on Business and Economics   (In press)  2018  [Refereed]

  • A shopping-path length estimation using Markov-chain-based shopper dynamics model

    Shunichi Ohmori, Masao Ueda, Kazuho Yoshimoto

    A shopping-path length estimation using Markov-chain-based shopper dynamics model, Operations and Supply Chain Management – An International Journal   (In-press)  2018  [Refereed]

  • Shelf-space allocation model with demand learning

    OHMORI, Shunichi

    Kazuki Ishichi, Shunichi Ohmori, Masao Ueda, Kazuho Yoshimoto   (In-press)  2018  [Refereed]

  • A forward-reserve allocation problem considering family-group

    Shunichi OHMORI, Kagehisa NAKAYAMA, Kazuho YOSHIMOTO

    American Journal of Engineering Research   (In-press)  2018  [Refereed]

  • A multi-period production-distribution planning considering parameter uncertainty

    Shunichi OHMORI, Kazuho YOSHIMOTO

    American Journal of Engineering Research   (In press)  2018  [Refereed]

  • Strategic safety stock placement with scenario-based delay

    Shunichi OHMORI, Kazuho YOSHIMOTO

    Proceedings of International Conference on Applied Mathematics And Computer Science    2017  [Refereed]

  • Vehicle Routing Problem for Freight Forwarding

    Shunichi Ohmori, Satoshi Kuriyama, Sirawadee Arunyanart, Kazuho Yoshimoto

    Asia-Pacific Journal of Science and Technology   22 ( 2 ) 1 - 5  2017  [Refereed]

  • Delivery Planning of Last Mile Logistics Considering Absence Probability on Each Term

    Yuki Shigeta, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of The 7th International Conference on Operations and Supply Chain Management    2016  [Refereed]

  • Research on Selecting Logistics Network Considered with Omni-channel

    Aya Komure, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of The 7th International Conference on Operations and Supply Chain Management    2016  [Refereed]

  • The Estimating Transportation Time for Item Picking in Warehouse Considered with Item Characteristics and External Factors

    Taisuke Kasuga, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of The 7th International Conference on Operations and Supply Chain Management    2016  [Refereed]

  • Decision on Optimal Display Space Following Demand Fluctuation

    Kazuki Ishichi, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of The 7th International Conference on Operations and Supply Chain Management    2016  [Refereed]

  • Vehicle Routing Problem for Freight Forwarding

    Shunichi Ohmori, Satoshi Kuriyama, Sirawadee Arunyanart, Kazuho Yoshimoto

    Khon Kaen University International Engineering Conference    2016  [Refereed]

  • Pairwise Comparison for Weight Restriction in DEA/ARI

    Sirawadee Arunyanart, Shunichi Ohmori, Kazuho Yoshimoto

    International Journal of Japan Association for Management Systems   7 ( 1 ) 53 - 60  2016  [Refereed]

  • Selection of Export Route Option in GMS Region: Recommendation for Current Situation

    Sirawadee Arunyanart, Shunichi Ohmori, Kazuho Yoshimoto

    Journal of Japan Industrial and Management Association   67 ( 2E ) 193 - 201  2016  [Refereed]

    DOI

  • A Development of a Simulation Tool for Production Planning with Capacity-Booking at Specialty Store Retailer of Private Label Apparel Firms

    Erika Yamaguchi, Sirawadee Arunyanrt, Shunichi Ohmori, Kazuho Yoshimoto

    International Journal of Industrial and Manufacturing Engineering   9 ( 12 ) 4377 - 4382  2015.12  [Refereed]

  • A Propose of Personnel Assessment Method Including a Two-Way Assessment for Evaluating Evaluators and Employees

    Shunsuke Saito, Kazuho Yoshimoto, Shunichi Ohmori, Sirawadee Arunyanart

    International Journal of Industrial and Manufacturing Engineering   9 ( 12 ) 4414 - 4417  2015.12  [Refereed]

  • A Propose of Personnel Evaluation Method Including a Two-Way Assessment for Evaluating Evaluators and Employees

    Shunsuke Saito, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of 17th International Conference on Operations Research and Financial Engineering    2015  [Refereed]

  • Developing a Simulation Tool for Production Planning with Capacity-Booking at Specialty Store Retailer of Private Label Apparel Firms

    Erika Yamaguchi, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of 7th International Conference on Operations Research and Financial Engineering    2015  [Refereed]

  • A Robust Optimization for Multi-Period Lost-Sales Inventory Problem

    Shunichi Ohmori, Sirawadee Arunyanart, Kazuho Yoshimoto

    Proceedings of 17th International Conference on Operations Research and Financial Engineering    2015  [Refereed]

  • A Framework of Managing Supply Chain Disruption Risks using Network Reliability

    Shunichi OHMORI, Kazuho YOSHIMOTO

    International Journal of Industrial Engineering and Management Systems   12 ( 2 ) 103 - 111  2015  [Refereed]

  • リスク緩和のためのサプライチェーン構成問題に関する研究

    大森峻一, 吉本一穗

    日本経営工学会論文誌   64 ( 2 ) 145 - 156  2015  [Refereed]

  • A Heuristic Algorism for Vehicle Routing Problem with Outsourcing Options

    Kazuki Yamada, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of 6th International Conference on Operations and Supply Chain Management    2014  [Refereed]

  • A Robust Machine Layout Under Demand Uncertainty

    Kai Hashimoto, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of The 6th International Conference on Operations and Supply Chain Management    2014  [Refereed]

  • The Global Logistics Network Design Problem with Rules of Origin

    Yohei Shinkawa, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of The 6th International Conference on Operations and Supply Chain Management    2014  [Refereed]

  • Simulation Model to Optimize the Supply Chain Configuration for Mitigating Risks with Common Parts

    Tomotake Kurosawa, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of The 6th International Conference on Operations and Supply Chain Management    2014  [Refereed]

  • Recent challenges and progress in real-world logistics

    Kazuho Yoshimoto Weerapat Sessomboon Shunichi Ohmori Sirawadee Arunyanart

      65 ( 2 ) 115 - 123  2014  [Invited]

    DOI

  • A 3D plant layout model considering pipeline route arrangement

    Shunichi Ohmori, Kazuho Yoshimoto

    Asian Journal of Management Science and Application   1 ( 3 ) 292 - 307  2014  [Refereed]

  • Revenue Management model for container ships

    Yuki Kubota, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of sian and Pacific Conference on Industrial Engineering and Management Systems 2013    2013  [Refereed]

  • Simulation Model to Optimize the Supply Chain Configuration for Mitigating Risks with Probability of the Damage Occurring and Production Recovery Process

    Kanji Takayama, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of Asian and Pacific Conference on Industrial Engineering and Management Systems 2013    2013  [Refereed]

  • Mathematical Model for Designing Multiple-Supply Chain Considering Product, Customer and Supply Chain Characteristics

    Tsuneaki Arakane, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of Asian and Pacific Conference on Industrial Engineering and Management Systems 2013    2013  [Refereed]

  • Measurement Method of Service Quality and Customer Satisfaction Focusing on Service Process

    Masatomo Yamaguchi, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of Asian and Pacific Conference on Industrial Engineering and Management Systems 2013    2013  [Refereed]

  • 力学的モデルを用いた施設レイアウト問題の解法 -カオス力学的モデルを用いた相対位置関係の探索-

    大森峻一, 吉本一穗

    日本経営工学会論文誌   64 ( 2 ) 145 - 156  2013  [Refereed]

    DOI

  • A Study on Commercial Facility Location Problem by Binary Particle Swarm Optimization Evaluation using Return on Investment

    Hanyong Choi, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of Asian and Pacific Conference on Industrial Engineering and Management Systems 2012    2012  [Refereed]

  • A Framework of Managing Supply Chain Disruption Risks using Network Reliability

    Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of Asian and Pacific Conference on Industrial Engineering and Management Systems 2012    2012  [Refereed]

  • Vehicle Routing Problem on an Incomplete Network

    Yoshihiro Eguchi, Shunichi Ohmori, Hanyong Choi, Kazuho Yoshimoto

    Proceedings of International Conference on Decision Sciences for Performance Excellence 2012    2012  [Refereed]

  • Hierarchical Facility Layout Planning Based on Mixed Integer Programming

    Tatsuya Tanaka, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of International Conference on Decision Sciences for Performance Excellence 2012    2012  [Refereed]

    DOI

  • Simulation Model to Optimize the Supply Chain Configuration for Mitigating Risks

    Keisuke Tsuzuso, Shunichi Ohmori, Hanyong Choi, Kazuho Yoshimoto

    Proceeings of International Conference on Decision Sciences for Performance Excellence 2012    2012  [Refereed]

  • Measuring Return on Service Quality Using Network DEA and ACSI

    Shunichi Ohmori, Sirawadee Aruyanart, Hanyong Choi, Kazuho Yoshimoto

    21st International Conference on Production Research    2012  [Refereed]

  • Improvement of Particle Swarm Optimization of the Mutation Concept for the Escape from Local Minima

    Hanyong Choi, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of 8th International Conference on Supply Chain Management and Information System (IEEE)    2011  [Refereed]

  • Solving Facility Layout Problem -Continuous Simulated Annealing-

    Shunichi Ohmori, Kazuho Yoshimoto, Kenshu Ogawa

    Proceedings of Proceedings of 8th International Conference on Supply Chain Management and Information System (IEEE)    2011  [Refereed]

  • Optimal 3D Facility Layout Technique Considering Pipeline Route Arrangement -For Industrial Facilities and Plant Layout-

    Yuuki Nouno, Kanako Miyoshi, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of Asian Conference on Management Science and Applications 2011    2011  [Refereed]

  • A Study on Commercial Facility Location Problem by Binary Particle Swarm Optimization

    Shu Ando, Hanyong Choi, Shunichi Ohmori, Kazuho Yoshimoto

       2011  [Refereed]

  • Facility Layout System using Interactive Evolutionary Computation

    Kanako Miyoshi, Yuuki Nouno, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of Asian Conference on Management Science and Applications 2011    2011  [Refereed]

  • Simulation Model to Determine Optimal Buffer Spaces for Minimal Production Cost

    Takashi Masumitsu, Komine Naoya, Shunichi Ohmori, Kazuho Yoshimoto

    Proceedings of Asian Conference on Management Science and Applications 2011    2011  [Refereed]

  • Stochastic Facility Layout Problem Considering Investment-Operating Cost Trade-Off

    Shunichi Ohmori, Kazuhiro Nomiyama, Hajime Ichikawa, Kazuho Yoshimoto, Hiromasa Akagi

    Proceedings of Asian Conference on Management Science and Applications 2011    2011  [Refereed]

  • Multi Floor Facility Layout Considering Multi-Floor Department

    Shunichi Ohmori, Hajime Ichikawa, Kazuhiro Nomiyama, Kazuho Yoshimoto, Hiromasa Akagi

    Proceedings of Asian Conference on Management Science and Applications 2011    2011  [Refereed]

  • A Continuous Representation and Chaos Theory Based Algorithm for Solving Facility Layout Problem

    Shunichi Ohmori, Kazuho Yoshimoto, Kenshu Ogawa

    Proceedings of 20th International Conference on Production Research    2011  [Refereed]

  • Application of integrative analytic hierarchy process and 0-1 integer programming to retail stores location in logistic system

    Zhenhua Gao, Kazuho Yoshimoto, Shunichi Ohmori

    Proceedings - 4th International Joint Conference on Computational Sciences and Optimization, CSO 2011     584 - 586  2011  [Refereed]

     View Summary

    Location of retail stores in logistic system involves many factors, some of which are quantitative, others of which are qualitative. The weight of each retail place is calculated by using AHP on the basis of analyzing the factors, then a location model is proposed by combining AHP and 0-1 programming, for AHP can not solve the problem with constraint. Finally the model of retail place location in logistic system is proved to be effective by examples. © 2011 IEEE.

    DOI

  • Solving Facility Layout Problem via Particle Swarm Optimization

    Shunichi Ohmori, Kazuho Yoshimoto

    International Journal of Computational Science   4 ( 5 ) 441 - 452  2011  [Refereed]

  • 実数値Genetic Algorithmを用いた施設レイアウト問題の解法

    大森峻一, 三好加奈子, 吉本一穗

    日本経営工学会論文誌   62 ( 2 ) 182 - 189  2011  [Refereed]

    DOI

  • Application of AHP/DEA to facility layout selection

    Zhenhua Gao, Kazuho Yoshimoto, Shunichi Ohmori

    3rd International Joint Conference on Computational Sciences and Optimization, CSO 2010: Theoretical Development and Engineering Practice   2   252 - 254  2010  [Refereed]

     View Summary

    Facility location selection is a multi-criteria decision problem and has a strategic importance for many companies, so it is very important to select alternative locations using appropriate methods. The aim of this study is to use analytic hierarchy process (AHP) and pure output data envelopment analysis (DEA) methods for facility location selection. After determining the factors that affect the facility location decisions, pure output DEA is used to construct the comparison matrix, then AHP is applied to calculate the weights of the alternative locations. In this method the known data is fully used and the influence of personal factors is avoided. Finally an example is illustrated to prove the method effective. © 2010 IEEE.

    DOI

  • Solving facility layout problem via particle Swarm optimization

    Shunichi Ohmori, Kazuho Yoshimoto, Kenshu Ogawa

    3rd International Joint Conference on Computational Sciences and Optimization, CSO 2010: Theoretical Development and Engineering Practice   1   409 - 413  2010  [Refereed]

     View Summary

    This paper targets the Facility Layout Problem (FLP), which has many practical applications and known to be NP-hard. During recent decades, a number of algorithms have been proposed to solve this problem. Most of those algorithms try to solve this problem by encoding layout candidates and using combinational optimization techniques to obtain the best one among those encoded candidates. However, since there exist layouts which cannot be represented by those encoding techniques, there is possibility of missing the searching opportunity for the optimal solution. To overcome this problem, this paper is concerned with the development of algorithm to solve FLP by searching continuously optimal coordinate of each department. In particular, this paper proposes an algorithm solving FLP via Particle Swarm Optimization (PSO), which is known to be effective for many types of continuous optimization problem. © 2010 IEEE.

    DOI

  • A Scheduling Method for Hybrid Flowshop Scheduling Problem: Proposal of the Chain Assignment of Jobs by Earliest Starting Time

    Shunichi Ohmori, Kazuho Yoshimoto, Kenshu Ogawa

    Proceedings of 19th International Conference on Production Research    2009  [Refereed]

▼display all

Awards

  • 平成28年度春季大会Best Presentation Award

    2016   日本経営工学会   Backhaulを考慮したクロスドッキングセンターの立地選択に関する研究

    Winner: 神上俊輔, 大森峻一, 吉本一穗

  • Best Paper Award

    2016   The 7th International Conference on Operations and Supply Chain Management   Decision on Optimal Display Space Following Demand Fluctuation

    Winner: Kazuki Ishichi, Shunichi Ohmori, Kazuho Yoshimoto

  • Best Paper Award

    2014   The 6th International Conference on Operations and Supply Chain Management   A Heuristic Algorism for Vehicle Routing Problem with Outsourcing Options

    Winner: Kazuki Yamada, Shunichi Ohmori, Kazuho Yoshimoto

  • Best Paper Award

    2013   Proceedings of Asian Conference on Management Science and Applications 2013   Simulation Model to Optimize the Supply Chain Configuration for Mitigating Risks with Probability of the Damage Occurring and Production Recovery Process

    Winner: Kanji Takayama, Shunichi Ohmori, Kazuho Yoshimoto

  • Best Paper Award

    2012   Keisuke Tsuzuso, Shunichi Ohmori, Hanyong Choi, Kazuho Yoshimoto   Simulation Model to Optimize the Supply Chain Configuration for Mitigating Risks

    Winner: Keisuke Tsuzuso, Shunichi Ohmori, Hanyong Choi, Kazuho Yoshimoto

Specific Research

  • 労働環境・環境負荷・経済性の持続可能性な配送計画問題

    2020   吉本一穂

     View Summary

    我が国の物流は、存続の危機に瀕している。人口減少に伴うドライバー不足が深刻化しており、雇用確保のために物流業務の労働環境の改善が必要不可欠である。また、トラックは、排気ガスに多くの有害物質が含まれるため、環境対策が強く求められる。一方、トラック実車時の積載率は、全国平均で約40%であり、配送効率化の余地が高く、改善が求められる。この様な配送効率化は、不必要な移動を削減することができるため、労働負荷・環境負荷の低減への効果が大きい。本研究では、組織連携に基づく配送効率化の方策として、水平連携(共同配送)、垂直連携(配送要件緩和)に着目し、シミュレーションを用いて各方策の効果を明らかにした。

  • 確率最適制御を用いた安全在庫配置最適化モデル

    2018   Kazuho Yoshimoto

     View Summary

    Strategic safety stock placement(SSP) is a tactical model to deter-mine optimal place and level of safetystocks in a supply chain. In SSP research, the guaranteed-service (GS) modelapproach can determine the best choice of the inventory placement to minimizetotal supply-chain inventory cost, while assuring 100% service-commitment underthe bounded demand assumption. Given this simplicity and exactness, thismodeling has become the model of choice in SSP research. Existing literature assumedthat the demand bound is known or can be calculated out of the model by the confidenceregion of the demand prediction, which is hardly justified in applications. Inthis research, we propose a data-driven optimization approach for the SSP inwhich decision maker has no prior information about demand bound and must learnfrom the data. We applied predictive prescription approach in which we have thedata consisting, not only of observations of demand itself, but observations ofassociated auxiliary quantities such as weather forecast. The problem is aconditional stochastic optimization problem in which a decision is made on thebasis of an observation of auxiliary data. Numerical results demonstrate thatthe learning algorithm performs well on the test data motivated from industrialapplications.

  • リスクを考慮したサプライチェーンのロバスト最適化

    2014  

     View Summary

    本研究では,途絶リスクを考慮したサプライチェーン設計の最適化を考えた.途絶リスクの評価にはシミュレーションを用いた.開発するシミュレーションでは想定するシナリオに基づきサプライチェーン上の各サプライヤが確率的に途絶し供給不能な状態に陥る.この途絶の影響は最終的に顧客への影響度である「納期遅れペナルティ」により評価される.このペナルティは本研究で定義する最適化問題の評価関数に用いられる.決定変数としては在庫水準,各拠点の強度,代替サプライヤ数である.これらのリスク緩和方策はそれぞれ投資コストがかかる.この投資コストとペナルティコストが最小となるようなサプライチェーンを設計した.この際,組み合わせ数が膨大であるため,メタヒューリスティクスの一つであるSimulated Annealing (SA)を用いた.事例研究ではデジタルカメラのサプライチェーンに対し適用を行い有効性の検証を行った.

  • 物流量の不確実性を考慮した工場レイアウトのロバスト最適化

    2013  

     View Summary

    本年度は、物流量の不確実性を考慮した工場レイアウトに対するロバスト最適化の前段階として、需要量の不確実性を考慮したマテリアルネットワークフロー設計問題の定式化とアルゴリズム開発を行った。以下(1)~(3)にその詳細をまとめた。(1)不確実の発生状況についての調査開発すべき数理的技法の要件定義,及びロバスト最適化問題のモデル化,解法の検討を行った。要件定義については生産現場における運搬/物流量のばらつきの範囲やその影響の大きさ,及びそれらに対する対応策の実態について文献調査・及び、ヒアリングを行った。その結果、以下の①~⑤の知見を得た。①需要の不確実性は大きく、また予測困難である。②需要のみならず、製品価格、またユーティリティコストについても燃料価格の変動に伴う変動が大きい。③需要量と製品価格には負の相関がみられる④ユーティリティコスト同士は正の相関がみられる。(理由:燃料価格に依存するため)⑤入力情報の変動に対応するにはレイアウトのロバストネスだけではなく、各アクティビティのキャパシティから考慮しなければならない。以上①~⑤の実態調査により、物流量の不確実性を考慮した工場レイアウトに対するロバスト最適化の前段階として、需要量の不確実性を考慮したマテリアルネットワークフロー設計問題を対象とする事にした。(2)定式化実態分析を踏まえ,開発すべき数理的技法の骨子・範囲を明確にしたうえ、マテリアルフロー設計問題として定式化を行った。パラメータ間の相関関係を扱える楕円体型の変動範囲を仮定した。目的関数としては最悪ケースを考えた場合の利益の最大化であり、SOCP(Second-Order Cone Programming)として定式化を行った。(3)アルゴリズム開発以上の基礎的な設計を基に,マテリアルフロー設計問題に対するロバスト最適化の技法を実装しテスト・修正を繰り返した.この際,早稲田大学大学院博士課程の学生の実験協力を受けるため人件費を用いた。開発したアルゴリズムをIIEの国際学会にて発表し専門家の意見を仰いだ。(4)今後の課題今回開発したマテリアルフロー設計問題と施設レイアウト問題の間には、相互の意思決定が影響を及ぼしあうため、両者を同時に扱うのが非常に難しい問題となる。この点をうまく結合させる必要がある。また、実データを用いた検証も合わせて行いたいと考えている。

  • 非線形最適化技法を用いた大規模施設のレイアウト計画の最適化に関する研究

    2011  

     View Summary

    本研究では非線形最適化技法を用いた大規模施設のレイアウト計画の最適化技法を提案した。本研究の主たる成果を下記①~③に分けて示す。①施設レイアウト技法に具備すべき要件の整理株式会社鹿島建設エンジニアリング本部に実務面での協力を仰ぎ,施設レイアウト技法に具備すべき要件の整理を行った.実用的なアルゴリズム開発という観点より,生産現場,サービス現場における施設レイアウトにおける共通概念の抽出や要件の定義を行う.実態分析を踏まえ,施設レイアウト技法設計上の制約条件・評価条件を抽出,研究自体の骨子・範囲を明確にした.具体的には2個の大項目,7個の中項目,17個の小項目の形でまとめた.また,以上の要件に対する従来技法の考慮の可否を調査した結果,従来技法では要件を全て満足する様な技法が存在しない事がわかった.②連続メタヒューリスティクスの適用施設計画問題(Facility Layout Problem)に対する従来技法の多くは,レイアウト候補を記号化し最適化を行う「離散的アプローチ」を用いる.ところが,本来FLPの解空間が連続空間上に存在するため,離散アプローチでは解の表現能力に問題があり,その結果上述の要件が考慮できていない事に着目,これらの問題点の解決のために,連続変数ベクトルとして表現する「連続最適化アプローチ」を用いる技法を提案した.中でも、これまで適用されていなかった“群粒子最適化”,“カオス最適化”などの種々の連続メタヒューリスティクスを適用し,FLPと連続メタヒューリスティクスの相性の調査をおこなった.具体的には12個のベンチマーク問題に対して、7個の技法を適用した.その結果,「CA(Chaos-Annealing)」が全ての問題に対し,目的関数値,CPU Timeともにも最も良い結果を得る事ができ,FLPにfitする技法である事がわかった.③大規模問題求解への対応以上の適用調査によりCA(Chaos-Annealing)を用いる事でより良い解を得られる事が分かったが,これに加え追加の工夫として,局所最適化のフェーズにおいて主双対内点法を用いるハイブリッド技法を提案した.これにより計算時間を大幅に減らす事ができた.その結果,以前では求解が困難であった大規模問題(職場数30以上)においても現実時間内で良解を得られるようになった.

 

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Committee Memberships

  • 2019.01
    -
    Now

    Operations and Supply Chain Management  International Committee

  • 2013
    -
    2015

    経営工学関連学会協議会(FMES)  事務局