Rough Sets and Professor Pawlak Originally from Talk in RSCTC2006 in Kobe

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Rough Sets and Professor PawlakOriginally from
Talk in RSCTC2006 in Kobe

• Shusaku Tsumoto
• Department of Medical Informatics,
• Shimane University, School of Medicine
• tsumoto_at_computer.org

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Bookstore in some weekend (1991)

• Encounter with Rough Sets
• Every week I visited a large bookstore in Tokyo
• I found Pawlaks book on one Saturday afternoon.
  
• I hesitated buying it
• repeating taking in hand, putting back into
  the bookshelf
• Since I did not find any interesting book that
  day, I bought his book.
• At that time, I did not notice that reasoning of
  our expert system corresponds to rough sets.
• I put Pawlaks book on the desk, not the
  bookshelf.

3
Professor Pawlak (RSKD93)

• First Meeting with Professor Pawlak
• Banff ? Conflict Analysis
• Energetic
• Research minded
• Binary Relations, Equivalence Relations
• Equivalence Relations ? Knowledge
• Conflict Analysis ? Relation Network ?

4
RSFD1996

• Prof. Pawlak, Prof. Zadeh and Prof. Michalski
• Granular Computing and Rough Sets
• By chance, the conference is before his birthday
  (November 10 Zodiac Scorpion).
• Banquet ? Professor Pawlaks birthday party
• My wifes birthday November 15 (Scorpion)
• My life is dedicated to two Scorpions
• Taurus is not so strong to scorpions.

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Just After RSFD 1996

• My PhD dissertation process started from August.
  
• Daily Schedule
• Morning University Duty
• Afternoon Preparation for RSFD96
• Evening Writing A Dissertation paper
• First presentation was held two weeks after the
  workshop.
• Title Automated Knowledge Acquisition using
  Rough Set Approximations

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1997-

• 1998 RSCTC98
• 1999 Marriage
• Moved to Shimane University
• RSFDGrC1999 (Pawlak in Japan)
• 2000 RSCTC00
• Professorship
• 2001 RSGrC (Pawlak in Japan)
• (invited Prof. Pawlak and Skowron to my
  labo)
• 2002 RSCTC02, ICDM2002
• 2003 RSFDGrC03 Chongqing
• 2004 RSCTC04
• 2005 IEEE GrC05, RSFDGrC05
• 2006 RSCTC2006, IEEE GrC06, ICDM2006
• Dec 2006, Jan 2007 My parents passed away

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Prof. Pawlak

• gave me Starting Point of My Research
• Pawlaks book
• Workshops and Conferences
• PhD
• Professorship
• Energy and My Life
• taught me research-minded principle.
• gave me an opportunity to meeting many people.
• Unfortunately, I feel that I could not do many
  things to Prof. Pawlak My Future Work

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Thank you, Professor Pawlak!
Shusaku Tsumoto