Curriculum Vitality

Takashi Washio, Ph.D.
Associate Professor
Institute for Scientific and Industrial Research
Osaka University

Summary
Takashi Washio is an associate professor in the division of Intelligent Systems Scienceat the Institute of Scientific and Industrial Research of Osaka University since 1996.
Before joining the university, he had been a visiting researcher of Nuclear reactor
laboratory of Massachusetts Institute of Technology (MIT) from 1988 to 1990 and a
researcher in Mitsubishi Research Institute from 1990 to 1996. In Nuclear reactor
laboratory of MIT, he studied the principles of diagnosis and control of nuclear powerreactor based on the artificial intelligence and the system identification theory, anddeveloped a prototype system of automated diagnosis and control of space nuclear
reactor engine. In the meantime, he studied an approach of causal ordering in complex
systems based on the generic physical knowledge. In Mitsubishi Research Institute, hestudied the theories and the algorithms of qualitative reasoning and causal reasoning
while developing the techniques for safety analysis, human reliability analysis, anddecision support for the operation of the large scale systems such as power plants andcommunication networks. He also developed some new sensing techniques for plant
diagnosis. His current main interest is the development of the theories and thealgorithms for the automated discovery of first principle equations from numerical data
and the development of the theories and the algorithms for complete search to extract
frequent patterns from graph structured data. He received hid Bs, Ms, and PhD degree
in nuclear engineering from Tohoku University, and he has been a research affiliate of
MIT since he left MIT. He is now on the editorial board of New Generation Computing.
He is a member of AAAI, JSAI, IPSJ, JSFTS, and SICE. He received the JSAI best
paper awards from Japanese Society for Artificial Intelligence (2001) and the Best
Paper Awards of AESJ from Atomic Energy Society of Japan (1996).

1. Personal Data
Name:

Takashi Washio

Title:

Associate Professor

Affiliation:

Department of Advanced Reasoning,
Division of Intelligent Systems Science,
Institute for Scientific and Industrial Research (I.S.I.R.),
Osaka University

Address:

8-1, Mihogaoka, Ibarakishi, Osaka, 567-0047, Japan

Phone:+81-6-6879-8541

Fax:+81-6-6879-8544

E-mail:mailwashio@ar.sanken.osaka-u.ac.jp

Date of Birth:

October, 30th, 1960

Age:

42

2. Biography:
Education
April,

1979

Entered to Nuclear Engineering Department, Faculty of Engineering,Tohoku University

March, 1983

Graduated Nuclear Engineering Department, Faculty of Engineering,Tohoku University

April,

1983

Entered to Master Course of Nuclear Engineering,
Upper Graduated School of Engineering, Tohoku University

March, 1985

Took Ms.E. in Nuclear Engineering,
Upper Graduated School of Engineering, Tohoku University

April,

1985

Entered to Ph.D. Course of Nuclear Engineering,
Upper Graduated School of Engineering, Tohoku University

March, 1988

Took Ph.D. in Nuclear Engineering,
Upper Graduated School of Engineering, Tohoku University

April,

1987

JSPS Research Fellow for Young Scientists- March, 1988
Job
April,

1988

Visiting Researcher in Nuclear Reactor Laboratory,- January, 1990 Massachusetts Institute of Technology (MIT)February, 1990

Research Affiliate of Nuclear Reactor Laboratory,- Present

Massachusetts Institute of Technology (MIT)February, 1990

Junior Researcher, Safety Engineering Divison,
Mitsubishi Research Institute Inc.

April, 1991

Researcher, Safety Engineering Divison,
Mitsubishi Research Institute Inc.

April, 1994

Senior Researcher, Safety Engineering Divison,
Mitsubishi Research Institute Inc.

April, 1995

Visiting Researcher of Monju Construction Office, Power Reactor and-March, 1997

Nuclear Fuel Development Corporation

July, 1995

Collaborative Researcher of The Institute of Statistical Mathematics- Present
June, 1996

Associate Professor, Department of Advanced Reasoning,- Present

Division of Intelligent Systems Science,
Institute for Scientific and Industrial Research (I.S.I.R.),
Osaka University

3. Degree T
Thes
hese
heses
PhD from Nuclear Engineering, Upper Graduated School of Engineering, Tohoku
University (March, 1988)
・Development of a Failure Symptom Derivation System and a Failure Diagnosis
System for Nuclear Power Plants
Ms from Nuclear Engineering, Upper Graduated School of Engineering, Tohoku
University (March, 1985)
・Development of an Anomaly Symptom Diagnosis System for Nuclear Power Plants
based on Knowledge Engineering Approaches
Bs from Nuclear Engineering Department, Faculty of Engineering, Tohoku University(March, 1983)
・Research on an Intelligent System for Radio Active Rays Measurement

4. Awards
May, 2001

JSAI Best Paper Awards

・Scientific Law Discovery based on Scale Type Constraint
November, 1999 Best Paper Awards for the Annual Conference of Japanese Society for
Artificial Intelligence・Scientific Law Discovery from Observed Data and its Application to Socio-psychology
October, 1998

Best Paper Awards for Annual Conference of Japanese Society for
Artificial Intelligence

・The Extended SDS:

A Model of Scientific Discovery for Simultaneous Equation

Systems
December, 1997 Encouragement Awards of Japanese Society for Artificial Intelligence
・A Method of Discovering the First Principles Based on Scale-based Reasoning and its
Implementation
June, 1997

Best Paper Awards for Annual Conference of Japanese Society for
Artificial Intelligence

・A Data-driven Method to Discover the First Principle of Complex Systems
December, 1996 Encouragement Awards of Japanese Society for Artificial Intelligence・Abduction-based Evaluation among Multiple Axiomatic Systems and its Application
March, 1996

The Best Paper Award of Atomic Energy Society of Japan・Criteria of Diversity Evaluation for Intelligent Diagnosis of Nuclear Power Plants
August, 1995

Best Paper Awards for Annual Conference of Japanese Society for
Artificial Intelligence

・A Method of History-Oriented Envisioning by Introducing Temporal Logic
February, 1988

Premium Paper Awards of the Society of Instrument and Control
Engineers

・An Attempt of Fuzzy Qualitative Reasoning5. Membership of Academic Society
Human Interface Society since 2002
Information Processing Society of Japan since 1999
Japan Ergonomics Society from 1995 to 1998
Japan Society for Fuzzy Theory and Systems since 1991
Japanese Society for Artificial Intelligence since 1989
American Association for Artificial Intelligence since 1988
Atomic Energy Society of Japan from 1988 to 1999
American Nuclear Society from 1987 to 1996
The Society of Instrument and Control Engineers since 1985
6. Research Experience
June, 1996

Associate Professor, Department of Advanced Reasoning,- Present

Division of Intelligent Systems Science,
Institute for Scientific and Industrial Research (I.S.I.R.),
Osaka University

・ Discovery of a first principle equation from experimental and numerical data
・ Discovery of a first principle equation from observed and numerical data
・ Discovery of first principle simultaneous equations from experimental andnumerical data
・ Discovery of first principle simultaneous equations from observed and numericaldata
・ Complete search for extracting frequent patterns from graph structured data by
Apriori-based graph mining (AGM)
・ Extention of Apriori-based graph mining (AGM) toward the application to wider
areas
・ Discretization of numeric data by Akaike’s information criterion (AIC) andminimum description length (MDL)・ Reduction of association rules by maximal inference sets and Apriori algorithm
・ Feature generation method based on association rules
・ Fast classification method by using sub-sampling and Bagging
・ Identification and analysis of non-equilibrium thermodynamics from time series
data analysis
・ Efficient approximate method of extracting typical patterns from graph structured

data by graph based induction (GBI)・ Integration of incremental knowledge acquisition from human expert andincremental machine learning from data in unstable environment within theframework of Ripple Down Rule method
・ Models of synthesis, its language and algorithm
April, 1994

Senior Researcher, Safety Engineering Divison,- May, 1996

Mitsubishi Research Institute Inc

・ Diagnosis for multiple faults of components and sensor by using model based
diagnosis
・ History-oriented envisioning to predict behaviors of process systems in qualitative
reasoning・ Abduction-based reasoning among multiple axiomatic systems
・ Worm-type agents for intelligent operation of large-scale man-machine systems
・ Organization learning in multi-agent systems
・ Autonomous recovery execution in nuclear power plant by agent
・ Diversity criteria for control and sensing instruments of nuclear power plants
・ Adaptive microphone array technique for remote monitoring of components innuclear power plants
February, 1990

Junior Researcher, Researcher, Safety Engineering Divison,- March, 1994

Mitsubishi Research Institute Inc.

・ Causal reasoning based on inherent causal structure of physical law formulae
・ Human reliability analysis based on fuzzy integral modeling・ Decision support for operability improvement and maintenance planning byanalytic hierarchy process (AHP) methodology
April,

1988

Visiting Researcher in Nuclear Reactor Laboratory,- January, 1990 Massachusetts Institute of Technology (MIT)・ Development of a quantitative and symbolic causal reasoning method for spacecraft
nuclear reactors
・ Derivation of exogenously-driven causality based on assumptive structural
equations・ Stability

considerations

concerningtheperiod-generated minimum time control laws

implementation

of

the

MIT-SNL

7. Academic Activities
Editorial Board
07/1997 – Present

Editorial board of New Generation Computing

10/1995 – 09/1995

Editorial board of Journal of Atomic Energy Society of Japan

Program Chairs
Chairs and Organizers
10/2001- Present

Tutorial Chair of ICDM02: The 2002 IEEE International
Conference on Data Mining

05/2001

Program Chair of KDD Challenge 2001 International
Workshop (JKDD01) of Japanese Society for Artificial
Intelligence

04/2000

Local Arrangement Chair of PAKDD2000: The Forth
Pacific-Asia Conference on Knowledge Discovery andData Mining

Program Committee
10/2001 - Present

ProgramCommitteeof

ICML02:The

NineteenthInternational Conference on Machine Learning
10/2001 - Present

ProgramCommitteeof

ICDM02:

The

2002

IEEE

International Conference on Data Mining
10//2001- Present

Program Committee of DX'02: Thirteenth International
Workshop on Principles of Diagnosis

09/2001-08/2002

Program Committee of DaWaK 2002: Fourth International
Conference on Data Warehousing and Knowledge Discovery

04/2001-10/2001

Program Committee of WI-2001: The First Asia-PacificConference on Web Intelligence

10//2000 – 09/2001

ProgramCommittee

ofDX'01:

TwelfthInternational

Workshop on Principles of Diagnosis
09/2000 - 08/2001

Program Committee of DaWaK 2001: Third International
Conference on Data Warehousing and Knowledge Discovery

10//1999 – 09/2000

ProgramCommitteeofDX'00:

Eleventh

International

ICML-2000:

SeventeenthWorkshop on Principles of Diagnosis
07/1999 – 06/2000

ProgramCommitteeofInternational Conference on Machine Learning
05/1999 - 04/2000

Program Committee of PAKDD2000: Fourth Pacific-Asia

Conference on Knowledge Discovery and Data Mining
12/1998 – 11/1999

Program Committee of RSFDGrC'99: Seventh International
Workshop on Rough Sets, Data Mining, and Granular-Soft
Computing

10/1998 – 09/1999

Program Committee of AAAI99: Annual Conference ofJapanese Society for Artificial Intelligence

10/1998 – 09/1999

Program Committee of DX99: Tenth International Workshop
on Principles of Diagnosis

05/1998 - 04/1999

ProgramCommitteeof

PAKDD99:

Third

Pacific-Asia

Conference on Knowledge Discovery and Data Mining
10/1997 – 09/1998

Program Committee of AAAI98: Annual Conference ofJapanese Society for Artificial Intelligence

04/1994 – 03/1995

Program Committee of IEEE/IFES'95: The International
Joint Conference of the Fourth International Conference on
Fuzzy

SystemsandtheSecondInternational

Fuzzy

of

DX'97:

EighthInternational

SeventhInternational

Engineering Symposium
10/1996 – 09/1997

ProgramCommittee

Workshop on Principles of Diagnosis
10/1995 – 09/1996

ProgramCommittee

ofDX'96:

Workshop on Principles of Diagnosis
SIGs and Working Groups
01/2002 – 08/2002

MYCOM2002 of Japanese Society for Artificial Intelligence,
Member of Arrangement Committee

01/2001 – 08/2001

MYCOM2001 of Japanese Society for Artificial Intelligence,
Member of Arrangement Committee

04/1998 – Present

SIG-ICS (Intelligence and Complex Systems) Information
Processing Society of Japan, Affiliate Member from 04/1998 –Present

08/1997 - Present

Member of Activity Planning Committee of Japanese Society
for Artificial Intelligence

11/1996 – Present

SIG-IS (Intelligent Systems) of The Society of Instrument andControl Engineers, Board Member from 11/1996.

04/1996 – Present

SIG-FAI (Foundation of Artificial Intelligence) of JapaneseSociety for Artificial Intelligence, Board Member from
04/1998

to 03/2000

04/1995 – 06/1996

Member of Kanto District Activity Planning Committee ofJapan Society for Fuzzy Theory and Systems, Board Member
from 04/1995 to 06/1996

04/1995 – 03/1997

SIG-FEP (Fuzzy Evaluation Problem) of Japan Society for
Fuzzy Theory and Systems, Board Member from 04/1995 to
03/1997

04/1995 – Present

SIG-MMS (Man-Machine Systems) of Atomic Energy Societyof Japan,

04/1994 – Present

Board Member from 04/1995.

SIG-KBS (Knowledge-Based Systems) of Japanese Society for
Artificial Intelligence, Affiliation Member from 04/1994.

04/1993 – 03/1995

SIG-MMS (Man-Machine Systems) of Atomic Energy Societyof Japan,Affiliation Member from 04/1993 to 03/1995

Invited Talks“Conditions of Law Equations and the Approach of their Discovery,” International
Conference on Advances in Infrastructure for Electronic Business, Education, Scienceand Medicine on the Internet (SSGRR 2002w), L'Aquila, Italy, January, 26, 2002

8. Publication Lists
Journal Papers
Masahiro Terabe, Takashi Washio, Hiroshi Motoda: Fast Classification by S3Bagging,
Journal of Information Processing Society of Japan, Vol.42, No.SIG 14 (TOM 5) (2001)
Akihiro Inokuchi, Takashi Washio, Takashi Okada and Hiroshi Motoda: Applying the
Apriori-based Graph Mining Method to Mutagenesis Data Analysis, Journal ofComputer Aided Chemistry, Vol.2, pp.87-92 (2001)
Satoshi Hori9, Yoshikazu Taki, Takashi Washio, Hiroshi Motoda: Watchdog System ofMarket Quality by Using Data Mining, Journal of the Institute of ElectricalEngineering of Japan, C (Division of Electronics, Information and System), Vol.121-C,
No.8 ,pp. 1289-1295 (2001)
Takashi Matsuda, Hiroshi Motoda and Takashi Washio: Graph-Based Induction for
General Graph Structure and Its Application, Journal of Japanese Society for Artificial
Intelligence, Vol.16, No.4, pp.363-374 (2001)
Takashi Washio and Hiroshi Motoda: Discovering Scientific Simultaneous Equation
Models for Large Scale Systems, Journal of Japanese Society for Artificial Intelligence,Vol. 15, No. 6, pp.1107-1116 (2000)
Akihiro Inokuchi, Takashi Washio, Hiroshi Motoda, Kouhei Kumasawa

and Naohide

Arai: Complete and Fast Mining Method of Frequent Graph Patterns, Journal ofJapanese Society for Artificial Intelligence, Vol. 15, No. 6, pp.1052-1063 (2000)
Takashi Washio and Hiroshi Motoda: Discovering Scientific Law Equations Based on
Scale-Type Constraints, Journal of Japanese Society for Artificial Intelligence, Vol.15,
No.4, pp.681-692 (2000)
Toshihiro Kayama, Tadashi Horiuchi, Hiroshi Motoda and Takashi Washio: Learning
Classification Rules from Tree Structured Data Based on Iterative Pair Chunking,
Journal of Japanese Society for Artificial Intelligence, Vol.15, No.3 (2000) (to appear)
Masahiro Terabe,

Osamu Katai,

Tetsuo Sawaragi, Takashi Washio and Hiroshi

Motoda: Feature Generation Method Based on Association Rules, Journal of JapaneseSociety for Artificial Intelligence, Vol.15, No.1, pp.187-197 (2000)
Takuya Wada, Tadashi Horiuchi, Hiroshi Motoda, Takashi Washio: Determination
Criteria of Default Knowledge Based on Character Evaluation of Knowledge Acquisitionin Ripple Down Rules Method, Journal of Japanese Society for Artificial Intelligence,
Vol.15, No.1, pp.177-186 (2000)
H. Motoda and T. Washio： Discovery of Laws, IEICE Transactions of Information and
Systems, Vol.E83-D, No.1, pp.44-51 (2000)
Y. Niwa, M. Terabe and T. Washio: Autonomous Recovery Execution in Nuclear Power
Plant by the Agent, Cognition, Technology & Work, 1: pp.197-210, Springer-Verlag
London Limited (1999)
Takashi Washio, Hiroshi Motoda: Constructive Law Equation Discovery Based on
Scale-Type Identification of Feature Quantity, Journal of Japanese Cognitive Science
Society, Vol.5, No.2, pp.80-94 (1998)
T. Washio and H. Motoda: Discovery of First-Principle Equations Based on
Scale-Type-Based and Data-Driven Reasoning, Special Issue, KDD: Techniques &Applications, Knowledge-Based Systems, Vol.10, No.7, pp.403-411, Elsevier (1998)
T. Washio, M. Sakuma and M. Kitamura: A New Approach to Quantitative and Credible
Diagnosis for Multiple Faults of Components and Sensors, Artificial Intelligence, Vol.91,
No.1, pp.103-130, Special Issue: Artificial Intelligence Research in Japan, Elsevier(1997)
Takashi Washio, Masatake Sakuma, Hiroshi Furukawa and Masaharu Kitamura:
Diversity Criteria for Intelligent Diagnosis of Nuclear Power Plants, J. Nucl. Sci.
Technol, Vol.37, No.12, pp.1128-1136 (1995)
Hiroshi Hurukawa, Keiji Kuchimura, Takashi Washio and Masaharu Kitamura:
Information Diversity for Intelligent Diagnosis of Nuclear Power Plant, J. Nucl. Sci.
Technol, Vol.37, No.8, pp.729-739 (1995)

Takashi Washio, Masatake Sakuma, Masaharu Kitamura: Quantitative and Reliable
Diagnosis Method for Multiple Failures of Components and Sensors, J. Nucl. Sci.
Technol, Vol.9, No.5 pp.719-729 (1994)
T. Washio and M. Kitamura: Adaptive Microphone Array Technique for Remote
Monitoring of Components in Nuclear Power Plants, J. Nucl. Sci. Technol., Vol.31, No.2,
pp.91-101 (1994)
Takashi Washio, Yutaka Kitamura and Hideaki Takahashi: Human Reliability Analysis
of Plant Manipulation Task Based on Fuzzy Integral, J. Nucl. Sci. Technol, Vol.33, No.10,
pp.983-993 (1991)
Takashi Washio: Derivation of Exogenously Driven Causality Based on Physical Laws,
Journal of Japanese Society for Artificial Intelligence, Vol.5, No.4, pp.482-491 (1990)
M. Kitamura, M. Takahashi, T. Washio and K. Sugiyama: Synthesis of Heuristic
Knowledge Base for Supporting Development of Goal-Oriented Reactor Noise Analysis
Programs, Progress in Nuclear Energy., Vol.21, pp.213-221 (1988)
T. Washio, M. Kitamura and K. Sugiyama: Development of Failure Diagnosis Method
Based on Transient Information of Nuclear Power Plant, J. Nucl. Sci. Technol., Vol.24,
No.6, pp.452-461 (1987)
T. Washio, M. Kitamura and K. Sugiyama: Qualitative Simulation of Power Plant
Dynamics Based on Design knowledge, Control-Theory and Advanced Technology., Vol.2,
No.3, pp.433-449 (1986)
T. Washio, M. Kitamura, K. Kotajima and K. Sugiyama: Automated Derivation of
Failure Symptoms for Diagnosis of a Nuclear Power Plant, Ann. Nucl. Energy., Vol.13,
No.8, pp.459-465 (1986)
M. Kitamura, T. Washio, K. Kotajima and K. Sugiyama: Small-Sample Modeling
Method for Nonstationary Reactor NoiseAnalysis, Ann. Nucl. Energy., Vol.12, No.8,
pp.399-407 (1985)
M. Kitamura, T. Washio, K. Kotajima and K. Sugiyama: Development of Methods forAnalyzing Time-Varying Characteristics of Power Reactor Noise, Progress in Nuclear
Energy., Vol.15, pp.57-65 (1985)
International Conference Papers
Takashi Washio: Conditions of Law Equations and the Approach of their Discovery, Proc.
Of International Conference on Advances in Infrastructure for Electronic Business,
Education, Science and Medicine on the Internet: SSGRR 2002w, No.83 (2002)
Takashi Washio and Hiroshi Motoda: A Method to Discover Admissble Model Equations
from Observed Data, Working Notes of 4th Internationaln Workshop on Similarity
Methods, pp.231-246 (2001)
Makoto Tsukada, Takashi Washio and Hiroshi Motoda: Automatic Web-Page
Classification by Using Machine Learning Methods, Web Intelligence Research andDevelopment (Proc. Of First Asia Pacific Conf., WI2001), LNAI2198, Springer,
pp.303-313 (2001)
Takashi Washio, Hiroshi Motoda and Yuji Niwa: Discovering Admissible Simultaneous
Equation Models from Observed Data, Proc. Of 12th European Conference on Machine
Learning:ECML2001, pp.539-551 (2001)
Masahiro Terabe, Takashi Waship and Hiroshi Motoda: The Effect of Subsampling Rateon S3 Bagging Performance, Working Notes on Active Learning, Databese Sampling,
Experimental Design: Views on In stance Selection, ECML/PKDD-2001 (2001)
Takashi Washio and Hiroshi Motoda: Discovery of Law Equations Governing Human
Affinity Under Trade-Off Between Cost and Risk, Proc. Of IMPS-2001: International
Meeting of the Psychometric Society, pp.74 (2001)
Takayuki Ikeda, Takashi Washio and Hiroshi Motoda: Basket Analysis on Meningitis
Data,

New

Frontiersin

Artificial

Intelligence,

Joint

JSAI

2001

Workshop

Post-Proceedings, LNAI 2253, pp.516-524 (Working Notes of JSAI KDD Challenge 2001,
JKDD01, pp.33-40) (2001)
Ken Ping Hew, Tetsuo Tomiyama, Takashi Washio and Yasushi Umeda: Language andAlgorithm for Synthesis, Proc. of 2000 International Symposium on Modeling ofSynthesis, pp.189-205 (2000)
Hiroshi

Hasegawa,

TakashiWashio,YukariIshimiya

andTakeshi

Saito:

Nonequilibrium Thermodynamics from Time Series Data Analysis, Proc. of Discovery
Science 2000 (DS2000), Lecture Notes in Artificial Intelligence 1967, Setsuo Arikawa
and Shinichi Morishita (Eds.), pp.304-305 (2000)
Takashi Matsuda, Tadashi Horiuchi, Hiroshi Motoda and Takashi Washio: Graph-Based
Induction for General Graph Structured Data and Its Application to ChemicalCompound Data, Proc. of Discovery Science 2000 (DS2000), Lecture Notes in Artificial
Intelligence 1967, Setsuo Arikawa and Shinichi Morishita (Eds.), pp.99-111 (2000)
Takashi Washio and Hiroshi Motoda: Modeling Admissible Simultaneous Equation
Systems Based on Complete Subsets and Scale-Type Constraints, Working note of
Similarity Methods: 3rd International Workshop, pp.73-84 (2000)
A. Inokuchi, T. Washio, T. Okada and H. Motoda: Applying Algebraic Mining Method ofGraph Substructures to Mutageniesis Data Analysis, Working notes of International
Workshop of KDD Challenge on Real-world Data, KDD Challemge 2000, The Fourth
Pacific-Asia Conference on Knowledge Discovery and Data Mining, pp.41-46 (2000)
A. Inokuchi, T. Washio and H. Motoda: An Apriori-based Algorithm for Min ing
Frequent Substructures from Graph Data, Proc. of PKDD2000: The Fourth European
Conference on Principles and Practice of Knowledge Discovery in Databases, pp.13-23(2000)
Takashi Washio, Hiroshi Motoda and Yuji Niwa: Enhancing the Plausibility of Law
Equation Discovery, Proceedings of the Seventeenth International Conference on
Machine Learning, ICML2000, pp.1127-1134 (2000)
A. Inokuchi, T. Washio, T. Okada and H. Motoda: Applying Algebraic Mining Method ofGraph Substructures to Mutageniesis Data Analysis, Working notes of International
Workshop of KDD Challenge on Real-world Data, KDD Challemge 2000, The Fourth
Pacific-Asia Conference on Knowledge Discovery and Data Mining, pp.41-46 (2000)

T. Matsuda, T. Horiuchi, H. Motoda and T. Washio: Consistency Based Feature Selection,
Proc. of the Fourth Pacific-Asia Conference on Knowledge Discovery and Data Mining(PAKDD-2000), pp.420-431 (2000)
H. Hasegawa, T. Washio and Y. Ishimiya: "Thermodynamics" from Time Series Data
Analysis, Proc. of Second International Conference, Discovery Science1999 (DS'99),
pp.326-327, (Lecture Notes in Artificial Intelligence 1721, Springer) (1999)
T. Matsuda, T. Horiuchi, H. Motoda, T. Washio, K. Kumazawa and N. Arai:
Graph-Based Induction for General Graph Structured Data, Proc. of the Second
International Conference on Discovery Science (DS'99), pp.340-342 (1999)
A. Inokuchi, T. Washio and H. Motoda: Derivation of the Topology Structure from theMassive Graph Data, Proc. of the Second International Conference on Discovery Science(DS'99), pp.330-332 (1999)
T. Washio and H. Motoda: Extension of Dimensional Analysis for Scale-types and its
Application to Discovery of Admissible Models of Complex Processes, Working Notes of
2nd International Workshop on Similarity Method, pp.129-147 (1999)
T. Washio, H. Motoda and Y. Niwa: Discovering Admissible Model Equations from
Observed Data Based on Scale-Types and Identity Constrains, Proc. of IJCAI'99:
Sixteenth International Joint Conference on Artificial Intelligence, Vol.2, pp.772-779(1999)
T. Washio and H. Motoda: Automated Scientific Modeling from Observed Data and its
Application to Socio-Psychology, Workingnotes of QR'99: the Thirteenth International
Workshop on Qualitative Reasoning, pp.240-249 (1999)
M. Terabe, O. Katai, T. Sawaragi, T. Washio and H. Motoda: A Data Pre-processing
Method Using Association Rules of Attributes for Improving Decision Tree, Proc. of theThird Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD'99),
pp.143-147 (1999)
Inokuchi, T. Washio and H. Motoda: Basket Analysis for Graph Structured Data, Proc.
of the Third Pacific-Asia Conference on Knowledge Discovery and Data Mining

(PAKDD'99), pp.420-431 (1999)
T. Wada, T. Horiuchi, H. Motoda and T. Washio: Characterization of Default Knowledge
in Ripple Down Rules Method, Proc. of the Third Pacific-Asia Conference on Knowledge
Discovery and Data Mining (PAKDD'99), pp.284-295 (1999)
H. Motoda: Computer Assisted Discovery of First Principle Equations from Numeric
Data, Invited Talk, Proc. of the Third Pacific-Asia Conference on Knowledge Discovery
and Data Mining (PAKDD'99), pp.2-2 (1999)
K. P. Hew, T. Washio, T. Tomiyama and Y. Umeda: A Mathematical theory of Synthesis
Design: Foundation, Framework, Logic and Application, Proc. of International
Symposium on Modeling of Synthesis, pp.19-31 (1998)
T. Washio and H. Motoda: Development of SDS2: Smart Discovery System for
Simultaneous Equation Systems, Discovery Science, Lecture Notes in Artificial
Intelligence 1532 pp.352-363 (1998)
T. Wada, T. Horiuchi, H. Motoda and T. Washio: A New Look at Default Knowledge in
Ripple Down Rules Method, Proc. of the 1998 Pacific Rim Knowledge Acquisition
Workshop (PKAW'98), pp.171-186 (1998)
Y. Niwa, M. Terabe and T. Washio: Collaborative Emergency Operation Man-Machine
System, Proc. of 7th IFAC/IFIP/IFORS/IEA Symposium on Analysis, Design and
Evaluation of Man-Machine Systems, pp.461-466 (1998)
T. Washio and H. Motoda: Discovering Admissible Simultaneous Equations of Large
Scale Systems, Proc. of the Fifteenth National Conference on Artificial Intelligence(AAAI-98) pp.189-196 (1998)
S. Hori, Y. Kawashima, T. Yukimatsu, H. Taki, T. Washio and H. Motoda: A Watchdog
System for Field Quality - A Basket Analysis Approach -, Proc. of US-Japan FA
Symposium, Vo.2, pp.741-748 (1998)
T. Washio, H. Matsuura and H. Motoda: Mining Association Rules for Estimation andPrediction, Proc. of the Second Pacific-Asia Conference on Knowledge Discovery andData Mining (PAKDD'98), pp.417-419 (1998)
T. Washio and H. Motoda: Structured Evaluation Based on Axiomatic Measurement,
Working notes of PRESTO "Information and Human Activity" Workshop, pp.14-17(1998)
T. Washio, H. Motoda, T. Kayama and H. Matsuura: Role of KDD in Autonomous
Operationof Large Scale Systems, Proc. of the International Symposium on Artificial
Intelligence, Robotics and Intellectual Human Activity Support for Nuclear
Applications, pp.201-210 (1997)
T. Washio and H. Motoda: Discovering Admissible Models of Complex Systems Based on
Scale-Types and Identity Constraints, Proc. of IJCAI'97: Fifteenth International Joint
Conference on Artificial Intelligence, Vol.2, pp.810-817 (1997)
T. Tomiyama, T. Murakami, T. Washio, A. Kubota, H. Takeda, T. Kiriyama, Y. Umeda,
and M. Yoshioka: The Modeling of Synthesis - From the Viewpoint of Design Knowledge- Proc. of International Conference on Engineering Design (ICED'97), Vol.3, pp.97-100(1997)
H. Motoda, T. Washio, T. Kayama and K. Yoshida: Extracting Behavioral Patterns fromRelational History Data, Proc. of the Workshop on Machine Learning for User Modelingto be held in conjunction with Sixth International Conference on User Modeling, (1997)
M. Takahashi, K. Fukui, T. Washio and M. Kitamura: Information Provision System for
Maintenance Support Based on Augmented Reality and Network Computing, Proc. of
the MARCON 97: International Conference on Maintenance and Reliability,
pp.64.01-64.10 (1997)
T. Washio and H. Motoda: Discovery of First Principle Based on Data-Driven Reasoning,
Proc. of the First Pacific-Asia Conference on Knowledge Discovery and Data Mining(PAKDD'97), pp.169-182 (1997)
T. Washio and M. Kitamura: Identification of Hidden Factors in Subjective Evaluationof Man-Machine Interface, Proc. of CSEPC'96: Cognitive Systems Engineering inProcess Control, pp.172-175 (1996)

Y. Niwa, T. Washio and M. Terabe: An Agent-Based Emergency Operating Procedure in
Nuclear Power Plant, Proc. of CSEPC'96: Cognitive Systems Engineering in Process
Control, pp.107-113 (1996)
T. Washio and H. Motoda: Discovery of Possible Law Formulae Based on Measurement
Scale, Proc. of the Fourth International Workshop on Rough Sets, Fuzzy Sets andMachine Discovery, pp.209-216 (1996)
T. Washio and H. Motoda: Discovery of Possible Law Equations by Combined Use of
Scale-Based and Data-Driven Reasoning, Working Note of PKAW'96: The PacificKnowledge Acquisition Workshop, pp.130-149 (1996)
T. Washio, J. Okusa and A. Endou: Intelligent virtural measurements in a process plant
based on model-based diagnosis, DX-96: Seventh International Workshop on Principles
of Diagnosis, pp.249-257 (1996)
T. Washio, H. Motoda and M. Kitamura: Decision Process Modeling Based on Consensus
Among Fuzzy Integral and AHP, Proc. of the 4th International Conference on Soft
Computing, Vol.1, pp.308-311 (1996)
T. Washio and H. Motoda: A History-oriented Envisioning Method, Proc. of PRICAI'96(4th Pacific Rim International Conference on Artificial Intelligence), pp. 312-323 (1996)
M. Terabe, T. Washio, O. Katai and T. Sawaragi: A Study of Organization Learning in
Multiagent Systems, Proc. of ECAI'96 Workshop on Learning in Distributed Artificial
Intelligence Systems: Working Notes, pp.110-119 (1996)
T. Washio and H. Motoda: Scale-Based Reasoning on Possible Law Equations, AAAI
Technical Report: Qualitative Reasoning, The Tenth International Workshop,
pp.255-264 (1996)
T. Washio and M. Kitamura: Worm-Type Agents for Intelligent Operation of Large-Scale
Man-Machine Systems, Symbiosis of Human and Artifact (Proc. of HCI International'95: 6th International Conference on HUMAN-COMPUTER INTERACTION), Y. Anzai,
K. Ogawa and H. Mori Eds., Elsevier Science B.V., pp.925-930 (1995)

M. Kitamura, H. Furukawa, R. Koza and T. Washio: Guiding Rules for Development ofIntelligent Monitoring System of Nuclear Power Plants, Proc. of SMORN VII: A
Symposium on Nuclear Reactor Surveillance andDiagnostics., pp.14.5.1-14.5.9 (1995)
T. Washio and M. Kitamura: A Fast History-oriented Envisioning Method Introducing
Temporal Logic, Working Papers of QR'95: The Ninth International Workshop on
Qualitative Reasoning about Physical Systems pp.279-288 (1995)
T. Washio and M. Kitamura: Towards a Theory of Diversity-based Diagnosis, Working
Papers of DX-94: The Fifth International Workshop on Principles of Diagnosis.,pp.352-356 (1994)
T. Washio: A History-oriented Envisioning Method, Working Papers of QR'94: theEighth International Workshop on Qualitative Reasoning about Physical Systems.,
pp.286-294 (1994)
M. Kitamura, H. Furukawa, M. Sakuma, R. Kozma and T. Washio: Robust Diagnosis of
Nuclear Plant Anomalies Through Multiple Neuro-Agent Cooperation, Trans. Am. Nucl.
Soc., Vol.70, pp.105-107 (1994)
T. Washio, M. Sakuma and M. Kitamura: A Diagnosis Method for Multiple Failures in a
Nonlinear and Dynamic Process, Proc. of AI'94: Tenth Canadian Conference on Artificial
Intelligence pp.139-146 (1994)
M. Kitamura, H. Furukawa, M. Sakuma and T. Washio: Diversity and Consensus as
Key Concepts for Design of Intelligent Operator Support System, Proc. of the FourthInternational Topical Meeting on Nuclear Thermal Hydraulics, Operations and Safety.,pp.41-C-1 - 41-C-8 (1994)
M. Kitamura, K. Kuchimura, H. Furukawa and T. Washio: Advanced Diagnosis ofComplex Dynamic Systems Through Consensus Formation Among Multiple Neural
Networks, Intelligent Engineering Systems Through Artificial Neural Networks (Proc.
of ANNIE'93: Artificial Neural Networks in Engineering) Vol.3, pp.641-64 (1993)
M. Kitamura, H. Furukawa, M. Sakuma and T. Washio: Combining Advisory andCredibility Information as Communication Message from Intelligent Machine for
Efficient Man-Machine Cooperation, Proc. of RO-MAN'93: 2nd IEEE International
Workshop on Robot and Human Communication., pp.253-258 (1993)
T. Washio, M. Sakuma and M. Kitamura: A Diagnosis Method for Multiple Process
Failures, Working Papers of DX-93: The Fourth International Workshop on Principles ofDiagnosis., pp.327-340 (1993)
M. Kitamura, H. Furukawa, K. Kuchimura and T. Washio: Diversification of Symptom
Description and Causal Reasoning forHigher Credibility of Computer-Assisted
Diagnosis in Nuclear Plants, Proc. of the Topical Meeting on Nuclear Plant
Instrumentation, Control, and Man-Machine Interface Technologies., pp.427-434 (1993)
R. Takahashi, A. Kameda and T. Washio: Fuzzy Evaluation Methodology for
Man-Machine Task Allocation, Proc. of Post ANP'92 Conference Seminaron Human
Cognitive and Cooperative Activities in Advanced Technological Systems., pp.13-24(1992)
T. Washio, H. Takahashi and M. Kitamura: A Method for Supporting Decision-Making
on Plant Operation Based on Human Reliability Analysis with Fuzzy Integral Proc. of
IIZUKA'92: The 2nd International Conference on Fuzzy Logic and Neural Networks.,
Vol.2, pp.841-845 (1992)
T. Washio and M. Kitamura: A New Approach to Plant Component Diagnosis Based on
Credible and Transparent Physical Knowledge, Proc. of 8th Power Plant Dynamics,
Control ¥& Testing Symposium., Vol.1, pp.15.01-15.16 (1992)
T. Washio and J. A. Bernard: Stability Considerations Concerning the Implementationof the MIT-SNL Period-Generated Minimum Time Control Laws, Space Nuclear Power
Systems 1989, M. S. El-Genk and M. D. Hoover Eds.,Orbit Book Co., pp.393-404 (1992)
J. A. Bernard, K. S. Kwok, T. Washio, F. J. Wyant and F. V. Thome: Experimental
Demonstration of the MIT-SNL Period-Generated Minimum Time Control Laws for
Rapid Increases of Reactor Power from Sub-critical Conditions, Space Nuclear Power
Systems 1989, M. S. El-Genk and M. D. Hoover Eds., Orbit Book Co., pp.381-392 (1992)

T. Washio, Y. Kitamura, H. Takahashi and M. Kitamura: Decision Support forOperability Improvement and Maintenance Planning by Analytic Hierarchy Process
Methodology, Probabilistic Safety Assessment and Management (Proc. of PSAM:
International Conference on Probabilistic Safety Assessment and Management), G.
Apostolakis Eds., Vol.2, pp.1451-1456 (1991)
T. Washio: Development of a Quantitative and Symbolic Causal Reasoning Method forSpacecraft Nuclear Reactors, Proc. of the Seventh Symposium on Space Nuclear Power
Systems CONF-900109., pp.968-975 (1990)
S. H. Lau, T. Washio, K. S. Kwok, J. A. Bernard, D. D. Lanning and F. J. Wyant: A
Methodology for the Control of Core Average Temperature inSpacecraft Nuclear
Reactors Proc. of the Seventh Symposium on Space Nuclear Power Systems
CONF-900109., pp.956-961 (1990)
T. Washio: Derivation of Exogenously-Driven Causality Based on Assumptive
Structural Equations, Working Papers of QR'89: The Third International Workshop on
Qualitative Reasoning (1989)
J. A. Bernard and T. Washio: The Utilization of Expert Systems Within the Nuclear
Industry, Proc. of the American Control Conference., Vol.1, pp.373-378 (1989)
M. Kitamura, T. Washio, T. Baba and K. Sugiyama: Evaluation of Signal Importance for
Effective Implementation of Functional Redundancy, Proc. of Computing andComputers for Control Systems (IMACS), P. Borne etal. Eds., J. C. Baltzer AG Scientific
Publishing Co., pp.315-317 (1989)
T. Washio and J. A. Bernard: Stability Considerations and Noise Reduction in the
Implementation of the MIT-SNL Period-Generated Minimum Time Control Laws, Proc.
of the Sixth Symposium on Space Nuclear Power Systems CONF-890103-Summs.,
pp.476-479 (1989)
J. A. Bernard, K. S. Kwok, T. Washio, F. J. Wyant and F. V. Thome: The AutomatedStartup of Spacecraft Nuclear Reactors, Proc. of the Sixth Symposium on Space Nuclear
Power Systems CONF-890103-Summs., pp.466-469 (1989)

J. A. Bernard, K. S. Kwok and T. Washio: Autonomous Controlof Spacecraft Nuclear
Reactors, Proc. of SPIE Conference: Space Station Automation IV SPIE., Vol.1006,
pp.28-45 (1988)
J. A. Bernard and T. Washio: An Examination of Expert Systems Activities Within the
Nuclear Industry, Trans. Am. Nucl. Soc., Vol.57, pp.240-241 (1988)
T. Washio and J. A. Bernard: Development and Experimental Demonstration of a Noise
Reduction Technique for a Non-Linear Dynamic System, Trans. Am. Nucl. Soc., Vol.57,
pp.96-97 (1988)
T. Washio, M. Kitamura and K. Sugiyama: A Method of FailureDiagnosis Based on
Time-Domain Failure Symptoms, Trans. Am. Nucl. Soc. 13th Biennial Conference on
Reactor Operating Experience ¥& International Meeting on Nuclear Power Plant
Operation., Vol.54, Suppl.1, pp.148-149 (1987)
M. Kitamura, T. Baba, T. Washio and K. Sugiyama: Development of Knowledge Base
System for Assisting Signal Validation Scheme Design, Proc. of the Topical Meeting"Artificial Intelligence and Other InnovativeComputer Applications in the Nuclear
Industry: Present and Future", M. C.Majumdar, D. Majumdar, J. I. Sackett, Eds.,
Plenum Press, pp.141-147 (1987)
T. Washio, M. Kitamura, K. Kotajima and K. Sugiyama: Automated Generation of
Nuclear Power Plant Safety Information(Qualitative Simulation and Derivation of
Failure Symptom Knowledge), Proc. of 6th Power Plant Dynamics, Control ¥& Testing
Symposium., Vol.1, pp.39.01-39.17 (1986)
M. Kitamura, T. Washio, K. Kotajima and K. Sugiyama: Advanced Techniques of Time
Series Analysis for Reactor Surveillance and Diagnosis, Proc. of 6th Power Plant
Dynamics, Control ¥& Testing Symposium., Vol.1, pp.23.01-23.18 (1986)
T. Washio, M. Kitamura, K. Kotajima and K. Sugiyama: Semantic Network Approach to
Automated Failure Diagnosis in Nuclear Power Plant, Proc. of ANS International
Topical Meeting on Computer Applications for Nuclear Power Plant Operation andControl., pp.654-661 (1985)

Review Articles in Journals
T. Washio, Present and Future of Data Mining in Business, Journal of Information
Processing Society of Japan, Vol.42, No.5, pp.467-471 (2001)
T. Washio, The Mathematical Model in Law Equation Discovery Theory, Journal ofJapanese Society for Artificial Intelligence, Vol.16, No.2, pp.245-248 (2001)
T. Washio and H. Motoda, Challenge of Law Discovery by Computer, Applied
Mathematical Science, Vol.11, No.1, pp.59-62 (2001)
T. Washio and H. Motoda, Extension of Association Rule Mining for Structural andNumerical Data, Journal of Japanese Society for Artificial Intelligence, Vol.15, No.5,
759-767 (2000)
T. Washio and H. Motoda, Evolution of Scientific Discovery by Computer, Bit, Special
Issue, pp.207-216, May (2000)
H. Motoda and T. Washio, Discovery of Laws, ICIE Transactions of Information and
Systems, Vol.E83-D, No.1, pp.44-51 (2000)
T. Washio, Model-based Diagnosis, Journal of Atomic Energy Society of Japan, Vol.40,
No.9, pp.664-667, 1998
T. Washio and H. Motoda, Theory of Scale Types, Journal of Japan Society for Fuzzy
Theory and Systems, Vol.10, No.3, pp.401-413 (1998)
H. Motoda and T. Washio, Machine Learning and Data Mining, Journal of JapaneseSociety for Artificial Intelligence, Vol.12, No.4, pp.505-512 (1997)
T. Washio, Application of Fuzzy Integral to Human Reliability Analysis, Special Issue on
Application of Fuzzy Theory to Reliability and Risk Analysis, Journal of Japan Society
for Fuzzy Theory and Systems, Vol.5, No.5, pp.958-969, (1993)

BooksJ. A. Bernard and T. Washio: Expert Systems Applications within the Nuclear Industry,
American Nuclear Society, La Grange Park IL USA, (1989)
Chapters in Books
Takashi Washio: Overview of Intelligence Engineering, Chapter 2, Agent, K. Hirota Eds.,
Shoukoudou pp.27-42 (1996)
T. Washio and M. Kitamura: Human Reliability Analysis with Fuzzy Integral,
Reliability and Safety Analyses under Fuzziness (Chap.6), T. Onisawa and J. Kacprzyk,
Eds., Physica-Verlag Heidelberg, pp.233-244 (1995)