Hiroyuki Iida Professor
School of Information Science,Entertainment Technology Area
Ph.D. Tokyo University of Agriculture and Technology(1994)
Computers and Games
◆Research Keywords
Game-refinement theory, Artificial Intelligence, Game tree search, Entertainment Science, Search Algorithm, Mathematical, Geme Theory
◆Research Interests
The Dynamics of Intelligence in the Game Field
Just as men long for freedom, intelligence seeks for uncertainty. Games, which epitomize uncertainty, evolved in their long history to refine uncertainty. This process employed a harmony between skill and chance in games, leading to evolutionary changes in noble uncertainty. Masters who stand at the top of their games seek the ultimate harmony that may exist at the end of the changes. Despite their desire to win, masters occasionally exercise their creativity unconditionally without prejudice. We call this state of mind, that is commonly found among masters, the “model of three masters”. This model reveals three distinct master aspects: the master of winning, the master of playing and the master of understanding. They correspond to each of the three aspects that games possess: competitiveness, entertainment, and metaphor. The model of three masters indicates the existence of various interactions between intelligences of players. We explore it in terms of the “dynamics of intelligence in the field of games”
Games in AI Research - Chips Challenging Champions -
Research using games has demonstrated the possibility of creating high-performance artificial-intelligence systems. Programming computers to play games is but one stage in the development of an understanding of the methods which must be employed for the machine simulation of intellectual behaviour. This research project strives beauty of `Information and Systems' in building a world-championship-caliber shogi program. Moreover, the diversity of decision-making systems and the evolution of intelligence in games will be investigated. 備考
Master Mind
This study examines the way of thinking of masters from the informatics’ point of view. Game informatics is a field where it searches game metric and finding out the meaning of games. Just as men long for freedom, the intellects seek uncertainty. Games, which epitomize uncertainty, have evolved in their long history to optimize uncertainty refinement. This process is a harmony between skill and chance, hence, evolutionary transformation in “noble uncertainty”. Masters who stand on top of their games seek the ultimate harmony which may exist at the end of noble uncertainty’s transitional path. Despite their desire to win, grandmasters seek to find their originality unconditionally without prejudice. I will call this state of mind which is commonly found among grandmasters the “model of three masters”. The true essence in game playing lies in predicting the opponent’s way of thinking. This skill involves “empathy” with opponent’s psyche and is referred as “opponent-model search”. Masters discover great proficiency in opponents and their nature of changes. I would like to propose this transformation of empathy as the “model of player’s cycle”.
Consensus Building and Group Performance in Games
We test N-member simple majority voting for the game ofChess. Several different chess programs were used to make the group. Games were played against the strongest member of the group. We show that the group is stronger than the strongest program. We then aim to answer the research question, under what conditions is N-member simple majority voting stronger than the strongest member?". We performed experiments on various groups. Statistics were gathered about the situations where the group outvoted the group leader. We propose two conditions to answer the research question, firstly group members should be almost equal in strength whilst still showing significant strength difference, and secondly denial percentage of leaders candidate depends on the strength of the members.
Entertainment Sustainability and Morality
In this project, we develop the information technology of evaluating entertainment quantitatively based on the concept of information sciences. Applying this technology, we analyze the negative sides of entertainment in the current e-society. From the analyses, we propose the model plan for the international moral standards for the creators and providers in e-society. We show the theoretical and quantitative method for dealing the social moral problems associated with entertainment environment in e-society. By setting the moral standards in e-society, we contribute the healthy and rightful development of e-society by increasing the morality of entertainment-related business firms.


◆Published Papers
Game refinement theory: Paradigm shift from performance optimization to comfort in mind
Sakshi Agarwal, Mohd Nor Akmal Khalid, Hiroyuki Iida
32, 100314, 1-7, 2019/09
Coopetition in Solving Combinatorial Optimization Problem: Application to the Industrial Assembly Line Balancing Problem.
M. N. A. Khalid, Umi Kalsom Yusof (USM), Yuexian GAO and H. Iida
In: Alfred R., Lim Y., Haviluddin H., On C. (eds) Computational Science and Technology. Lecture Notes in Electrical Engineering, vol 603., 603, -, 2019/08
Quantifying attractiveness of incomplete-information multi-player game: case study using DouDiZhu
Gao Y. Li W., Khalid M.N.A., Iida H
In: Alfred R., Lim Y., Haviluddin H., On C. (eds) Computational Science and Technology. Lecture Notes in Electrical Engineering, Springer, 603, 301-310, 2019/08
Quantifying Engagement of Battle City with Different AI Strength
Shuo Xiong, Yiwen Tang, Long Zuo, H.Iida
Proceedings of AAI2019, -, 2019/07
Can we save near-dying games? - An approach using advantage of initiative and game refinement
Htun Pa Pa Aung, Mohd Nor Akmal Khalid, Hiroyuki Iida
Proceedings of INCITEST/AWIST 2019, -, 2019/07
Estimation of Position Complexity based on Correlation between Evaluation Factors
竹内 章, 鵜木 祐史, 飯田 弘之
研究報告ゲーム情報学(GI), 2015, 13, 1-7, 2015/02/26
Resignation Positions Identification in Shogi
Akira Takeuchi, Hiroyuki Iida
IPSJ Journal, 55, 11, 2370-2376, 2014/11/15
Investigation of the dispersion patterns of the voting results in Council System with Homogeneous Chess Program Group
曾根 彰吾, 長束 薫, 由井薗 隆也, 飯田 弘之
ゲームプログラミングワークショップ2014論文集, 2014, 75-81, 2014/10/31
Automatic Generation of Heuristics Function by Knowledge Acquisition from General Games
Yuichiro Sato, Hiroyuki Iida
研究報告ゲーム情報学(GI), 2014, 4, 1-4, 2014/06/28
Proposal of Novel Game Information Dynamic Models and their Application
Muangkasem Apimuk
芸術科学会論文誌, 12, 3, 132-142, 2013/09/30
Computational Science and Technology - ICCST 2017. Lecture Notes in Electrical Engineering, vol 488.
Rayner Alfred, Hiroyuki Iida, Ag. Asri Ag. Ibrahim, Yuto Lim, Springer, Singapore , 2018
Computational Science and Technology4th ICCST 2017, Kuala Lumpur, Malaysia, 29-30 November 2017
Rayner Alfred, Hiroyuki Iida, Ag. Asri Ag. Ibrahim, Yuto Lim, Lecture Notes in Electrical Engineering, vol.488, Springer Nature Singapore, 2017
Communications in Computer and Information Science 408
Tristan Cazenave, Mark Winnands, Hiroyuki Iida, Editor, Springer, 2014
Computers and Games (CG2013), LNCS 8427
Aske Plaat, Jaap van den Herik, Hiroyuki Iida, Editor, Springer, 2014
Computers and Games
H.Jaap van den Herik, Hiroyujki Iida, Aske Plaat, Lecture Notes in Computer Science, LNCS 6515, Springer, 2010
◆Conference Activities & Talks
Single Conspiracy Number Analysis in Checkers
Sarot Busala, Song Zhang, Mohd Nor Akmal bin Khalid, Hiroyuki Iida and Umi Yusof
ICAART2019, Prague, Czech Republic, 2019/02/19
Probability-based Proof Number Search
Zhang Song, Hiroyuki Iida, H. Jaap Van Den Herik
ICAART2019, Prague, Czech Republic, 2019/02/19
Deeb Blue, Tacos, AlphaGo, and More
H. Iida
The 2nd International Conference on Advanced Information Technologies (ICAIT), Yangon, Myanmar, 2018/11/01
Advantage of Initiative Revisited:A case study using Scrabble AI
Htun Pa Pa Aung, H.Iida
The 2nd International Conference on Advanced Information Technologies (ICAIT), Yangon, Myanmar, 2018/11/01
Fog of Search Resolver for Minimum Remaining Values Strategic Coloring of Graph
Saajid Abuluaih, Azlinah Mohamed, Muthukkaruppan Annamalai, Hiroyuki Iida
International Conference on Soft Computing in Data Science 2018 (SCDS2018), Bankok, Thailand, 2018/08/15

■Teaching Experience

Game Informatics, Game Informatics (E)

■Contributions to  Society

◆Academic Society Affiliations
Computer Shogi Association, International Compoter Games Association, Information Processing Society of Japan, ACM, AAAI, The Japanese Society for Artificial Intelligence, Working Group WG 16.4 (Games and Entertainment Computing) of IFIP's SG, IEEE Task Force on Player Satisfaction Modeling
◆Academic Contribution
ICGA 2016 Events (Computers and Games Conference,World Computer Chess Championship,World Computer Software Championship,Speed Computer Chess Championship,Computer Olympiad) , Jaap van den Herik, Professor, Leiden University , 2016/06/27 - 2016/07/04 , Leiden University, the Netherlands
10th India-Japan Bilateral Conference (BICON 2015) , Manish Biyani, Associate Professor, JAIST , 2015/09/20 - 2015/09/27 , Jaipur, India
Computer Olympiad 2013 , JAIST, Professor Dr. Hiroyuki Iida , 2013/08/12 - 2013/08/18 , Keio University, Yokohama

■Academic  Awards

・ Contribution Award , Computer Shogi Association , 2011/05/05
・ The JAIST Computer Olympiad, Bronze medal in the Quoridor Tournament , International Computer Games Association , 2010/09/26
・ The winner of the CESA Developers Conference 2010 Computer 9x9 Go tournament , Computer Entertainment Supplier's Association , 2010/09/02