ASHIDA Masaya

写真a

Name of department

Faculty of Economics, Department of Economics

Job title

Professor

Concurrent post

School of Socio-Informatics(Since R5 FY)

Mail Address

E-mail address

External Link


Education 【 display / non-display

  • 1991
    -
    1996

    Osaka University   工学研究科   通信工学専攻  

  • 1986
    -
    1990

    Osaka University   School of Engineering   通信工学科  

Degree 【 display / non-display

  • 博士(工学)

Academic & Professional Experience 【 display / non-display

  • 2015.04
    -
    Now

    - 同   教授

  • 1998.04
    -
    2015.03

    - 同 助教授(2004年 - 准教授)

  • 1996.04
    -
    1998.03

    Wakayama University   Faculty of Economics

Association Memberships 【 display / non-display

  • 電子情報通信学会

  • 情報処理学会

  • 電気学会

Research Areas 【 display / non-display

  • Informatics / Intelligent informatics

 

Classes (including Experimental Classes, Seminars, Graduation Thesis Guidance, Graduation Research, and Topical Research) 【 display / non-display

  • 2021   SeminarⅡ and Thesis   Specialized Subjects
  • 2021   SeminarⅡ and Thesis   Specialized Subjects
  • 2021   Information Systems DesignⅡ   Specialized Subjects
  • 2021   Information Systems DesignⅠ   Specialized Subjects
  • 2021   Management Mathematics B   Specialized Subjects

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Classes 【 display / non-display

  • 2021   Management Information System   Master's Course
  • 2021   Operations Research   Master's Course
  • 2021   Graduate Seminar Ⅱ and Thesis   Master's Course
  • 2020   Graduate Seminar Ⅱ and Thesis   Master's Course
  • 2020   Graduate Seminar Ⅰ   Master's Course

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Satellite Courses 【 display / non-display

  • 2017   Information Processing  
 

Research Interests 【 display / non-display

  • 探索

  • 知識システム

  • knowledge system

  • 人工知能応用

  • search

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Published Papers 【 display / non-display

  • A Tree Search Method with Improvement of Search Cost Estimation Based on Characteristics of Cost Allocation

    Masaya Ashida, Hirokazu Taki

    IPSJ Journal ( 一般社団法人情報処理学会 )  54 ( 4 ) 1632 - 1640   2013.04  [Refereed]

     View Summary

    This article proposes a search method applied to a tree structure that each link cost is larger than the cost of its precedent link along the path from root node to each leaf node. The proposed method searches the tree structure, updating the estimation of link cost based on the actual value of its precedent link cost. It is proved that the proposed method is able to find an optimal solution. And it is also proved that the number of expanded nodes by the proposed method in finding the solution is less than or equal to the number of expanded nodes by A* algorithm. Results of simulation using...

  • A Definition of the Document Structure for the Online Exchange of Book Reviews Published on Internet Sites

    Ashida Masaya

    Keizai riron : economic theory ( Wakayama University )  367   33 - 47   2012.05

    DOI

  • Geometric Considerations of Search Behavior

    Masaya Ashida, Hirokazu Taki

    KNOWLEDGE-BASED AND INTELLIGENT INFORMATION AND ENGINEERING SYSTEMS, PT II ( SPRINGER-VERLAG BERLIN )  6277   611 - 619   2010  [Refereed]

     View Summary

    In this article, behavior of a heuristic search with a. heuristic function divided into two parts is discussed based on a geometric analysis, and a method for improving the heuristic function is proposed. One part of the divided heuristic function is called short-term forecast. Another part is called long-term forecast. Based on the discussion, it is suggested there exists a possibility that the difference of accuracy of both forecasts leads the search to an incorrect path. Since there exists a possibility that the search becomes efficient and that the search does not select an incorrect path by improving accuracy of a long-term forecast, a method to update the value of a long-term forecast is proposed. It is shown that the proposed method is effective under the tree structure which cost of the edge observed at deep location is greater or equal than that observed at shallow location.

  • Implementation Guidelines for Sharing Maintenance Tasks on Web Applications

    芦田 昌也, 竹内 昭浩, 岩田 英朗

    The Wakayama economic review ( 和歌山大学経済学会 )  ( 334 ) 1 - 18   2006.11

    DOI

  • 所与の仕様との逐次的な照合に基づくパターンの獲得

    情報処理学会論文誌   第 40 巻 第 7 号 2872-2881   1999  [Refereed]

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Misc 【 display / non-display

 

Instructor for open lecture, peer review for academic journal, media appearances, etc. 【 display / non-display

  • 兼任講師

    2021.04.01
    -
    2022.03.31

    桃山学院大学

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    非常勤講師

    講義科目の「情報システム論Ⅰ<春>」・「情報システム論Ⅱ<秋>」各1コマを担当して頂きます。

  • 非常勤講師

    2021.04.01
    -
    2021.07.30

    学校法人桃山学院

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    非常勤講師

    非常勤講師として、「仕事で使う数学」の講義を前期土曜(隔週)1限9:40~11:10、2限11:20~12:50を担当する。

Committee member history in academic associations, government agencies, municipalities, etc. 【 display / non-display

  • 委員

    2020.02.08
     
     
     

    和歌山県環境生活部所管公募型プロポーザル方式等事業者選定委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2020年2月~