Kazuki Yoshizoe

J-GLOBAL         Last updated: Feb 23, 2017 at 16:56
 
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Name
Kazuki Yoshizoe
E-mail
kazuki.yoshizoeriken.jp
Affiliation
RIKEN
Section
Center for Advanced Intelligence Project (AIP)
Job title
Unit Leader
Degree
PhD in Computer Science

Research Areas

 
 

Published Papers

 
SOEDA SHUNSUKE, YOSHIZOE KAZUKI, KISHIMOTO AKIHIRO, KANEKO TOMOYUKI, TANAKA TETSURO, MULLER MARTIN
IPSJ Journal   48(11) 3455-3462   Nov 2007
We present the df-pn λ search algorithm that combines threats with proof and disproof numbers. λ search is a promising method based on threats. Df-pn is an efficient algorithm that employs the notion of proof and disproof numbers. However, λ searc...
Junichi Hashimoto,Akihiro Kishimoto,Kazuki Yoshizoe,Kokolo Ikeda
Advances in Computer Games - 13th International Conference, ACG 2011, Tilburg, The Netherlands, November 20-22, 2011, Revised Selected Papers   1-12   2011   [Refereed]
Daisuke Ishii,Kazuki Yoshizoe,Toyotaro Suzumura
Principles and Practice of Constraint Programming - 20th International Conference, CP 2014, Lyon, France, September 8-12, 2014. Proceedings   398-406   2014   [Refereed]
Scalable Distributed Monte Carlo Tree Search
Kazuki Yoshizoe, Akihiro Kishimoto, Tomoyuki Kaneko, Haruhiro Yoshimoto and Yutaka Ishikawa
Proceedings of The Fourth Annual Symposium on Combinatorial Search (SoCS2011)   4 180-187   2011   [Refereed]
Triple Line‐based Playout for Go -- An Accelerator of Monte Carlo Go
Kenichi Koizumi, Mary Inaba, Kei Hiraki, Yasuo Ishii, Takefumi Miyoshi and Kazuki Yoshizoe
In Proc. 2009 International Conference on ReConFigurable Computing and FPGAs (ReConFig'09)      Dec 2009   [Refereed]
A Study on Security Evaluation Methodology for Image based Biometrics Authentication Systems
Yasuhiro Tanabe, Kazuki Yoshizoe, Hideki Imai.
Proceedings of IEEE Third International Conference on Biometrics: Theory, Applications and Systems (BTAS09)      2009   [Refereed]
AND-OR Tree Search Algorithms for Domains with Uniform Branching Factors
Kazuki Yoshizoe
Ph.D. Thesis, Department of Computer Science, Graduate School of Information Science and Technology, the University of Tokyo      2009
A Privacy Protection Scheme for a Scalable Control Method in Context-Dependent Services
Rei Yoshida, Rie Shigetomi, Kazuki Yoshizoe, Akira Otsuka, and Hideki Imai.
Lecture Notes in Computer Science, Western European Workshop on Research in Cryptology (WEWoRC 2007)   4945 1-12   2008   [Refereed]
A new proof-number calculation technique for proof-number search
Kazuki Yoshizoe
Lecture Notes in Computer Science, Computers and Games (CG 2008)   5131 135-145   2008   [Refereed]
Lambda depth-first proof number search and its application to go
Kazuki Yoshizoe, Akihiro Kishimoto, and Martin Mueller
Proc. of the 20th International Joint Conference on Artificial Intelligence (IJCAI-07)   2404-2409   2007   [Refereed]
Monte carlo go has a way to go
Haruhiro Yoshimoto, Kazuki Yoshizoe, Tomoyuki Kaneko, Akihiro Kishimoto, and Kenjiro Taura.
Twenty-First National Conference on Artificial Intelligence (AAAI-06)   1070-1075   2006   [Refereed]
A search algorithm for finding multi purpose moves in sub problems of Go
Kazuki Yoshizoe.
10th Game Programming Workshop (GPW05)   10 76-83   2005   [Refereed]

Misc

 
Kazuki Yoshizoe, Yutaka Ishikawa
IPSJ SIG Notes   2010(27) 1-7   Jul 2010
We propose to implement a framework for Monte Carlo Tree Search (MCTS) on distributed parallel systems. The objective is to facilitate the parallelization of existing sequential Monte Carlo Tree Search programs. It is expected to be effective for ...
Yoshizoe Kazuki, Imai Hiroshi
2005(87) 63-70   Sep 2005
It is difficult to make a fast and accurate evaluation function for the whole board in the Game of Go. Therefore sub-goal directed search is used widely among Go playing programs. One problem of sub-goal directed search is dependencies between sub...
YOSHIZOE Kazuki
IPSJ Magazine   49(6) 686-693   Jun 2008
YOSHIZOE KAZUKI, MATSUMOTO TAKASHI, HIRAKI KEI
IPSJ SIG Notes   98(72) 1-6   Aug 1998
There have been several proposals about hardware speculative executions, in a larger gran-ularity than instruction level parallelism, by partitioning the target program into blocks.We have applied speculative execution onto Java Virtual Machine. W...
KOIZUMI Kenichi, ISHII Yasuo, YOSHIZOE Kazuki, MIYOSHI Takefumi, SUGAWARA Yutaka, INABA Mary, HIRAKI Kei
IEICE technical report. Computer systems   109(168) 55-60   Jul 2009
In the monte-carlo simulation of Go, it takes time to run playouts. There were attempts of accelerating by implementing circuits for playout on FPGA, but it is difficult to realize high-speed playouts because of high utilization of resources in a ...

Conference Activities & Talks

 
Accelerated UCT and Its Application to Two-Player Games
Junichi Hashimoto, Akihiro Kishimoto, Kazuki Yoshizoe, Kokolo Ikeda
Advances in Computer Games 13   Nov 2011   
Lambda Depth-first Proof Number Search : A novel algorithm for AND/OR tree search [Invited]
Kazuki Yoshizoe.
In AI Seminar Series, Department of Computing Science, University of Alberta   2006   

Research Grants & Projects

 
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(若手研究(B))
Project Year: 2011 - 2012    Investigator(s): Kazuki YOSHIZOE
We have successfully parallelized the Monte-Carlo Tree Search algorithm which is known for its broad range of application. Our TDS-df-UCT algorithm achieved 3,200-fold speedup in the best case for synthesized game trees. Also, Accelerated UCT was ...

Others

 
Kazuki Yoshizoe and Takanori Iwamatsu.
US Patent 7564407,
Directivity control apparatus of array antenna and directivity
controlling method,
US Patent Issued on July 21, 2009.