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現実データからの知識獲得問題に対するブール関数的アプローチ

Research Project

Project/Area Number 11750059
Research Category

Grant-in-Aid for Encouragement of Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Engineering fundamentals
Research InstitutionOsaka University

Principal Investigator

牧野 和久  大阪大学, 基礎工学研究科, 講師 (60294162)

Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 2000: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1999: ¥1,300,000 (Direct Cost: ¥1,300,000)
Keywordsデータマイニング / 知識表現 / 推論 / ホーンブール関数 / 部分定義論理関数 / 論理関数 / 拡大 / ホーン理論 / 推論問題 / データ分析
Research Abstract

ある事象を引き起こす例(正例)のデータ集合T⊆{0,1}^nと,引き起こさない例(負例)のデータ集合F⊆{0,1}^nの組である部分定義論理関数(T,F)が与えられたとき,なぜその事象が起こるのかということを説明する理論fを求める問題を考察した.正確に言うと,理論fとは,すべてのυ∈Tに対してf(υ)=1を満たし,かつ,すべてのυ∈Fに対してf(υ)=0を満たす論理関数(拡大)のことです.この問題は人工知能分野における知識獲得の一形式であり,データベース理論においてデータ発掘,及び,知識発見と呼ばれ,近年盛んに成りつつある分野である.
本年度は,まず与えられたデータが未知ビットを含んだ場合,どのような理論を作ることが望ましいかということを様々な尺度から議論し,その尺度に基づく理論構築のアルゴリズムを構成した[E.Boros, T.Ibaraki and K.Makino,Fully consistent extensions of partially defined Boolean functions with missing bits, IFIP TCS2000, LNCS 1872,(2000)257-272].また,与えられたデータを説明する本質的な変数(属性)を求めるアルゴリズム[E.Boros, T.Horiyama, T.Ibaraki, K.Makino and M.Yagiura, Finding essential attributes in binary data,IDEAL2000 LNCS 1983,(2000)133-138],および,変数間の分解構造を利用した理論構成アルゴリズムを提案した[H.Ono, K.Makino and T.Ibaraki, Logical analysis of data with decomposable structures, COCOON2000,LNCS 1858,(2000)396-406].
ホーン理論が複数与えられたとき,それらを利用してdeductionあるいは,abductionという推論を高速に行うために理論をどのように合成するか考察した.[T.Eiter, T,Ibaraki and K.Makino, On the Difference of Horn theories, Journal of Computer and System Sciences,61(2000)478-507など].
その他に,q-ホーン理論の関数従属性,決定リスト等の性質を明らかにした.

Report

(2 results)
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (23 results)

All Other

All Publications (23 results)

  • [Publications] Eiter,T.: "On the difference of Horn theories"Journal of Computer and System Sciences. 61. 478-50 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Makino,K.: "Efficient generation of all regular non-dominated coteries"Proceedings of PODC2000. 19. 279-288 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Boros,E.: "Generating parital and multiple transversals of a hypergraph"ICALP2000, LNCS. 1853. 588-599 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Makino,K.: "Max-and min-neighborhood monopolies"SWAT2000,LNCS. 1851. 513-526 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Arata,K.: "Locating sources to meet flow demands in undirected networks"SWAT2000,LNCS. 1851. 300-313 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Ono,H.: "Logical analysis of data with decomposable structures"COCOON2000,LNCS. 1858. 396-406 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Boros,E.: "Fully consistent extensions of partially defined Boolean functions with missing bits"IFIP TCS2000, LNCS. 1872. 257-272 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Boros,E.: "Finding essential attributes in binary data"IDEAL2000,LNCS. 1983. 133-138 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Makino,K.: "On minimum edge ranking spanning trees"Journal of Algorithms. (採録決定済).

    • Related Report
      2000 Annual Research Report
  • [Publications] Boros,E.: "Dual-bounded generating problems : partial and multiple transversals of a hypergraph"SIAM Journal on Computing. (採録決定済).

    • Related Report
      2000 Annual Research Report
  • [Publications] Eiter,T.: "Decision lists and related Boolean functions"Theoretical Computer Science. (採録決定済).

    • Related Report
      2000 Annual Research Report
  • [Publications] Ibaraki,T.: "On functional dependencies in q-Horn theories"Artificial Intelligence. (採録決定済).

    • Related Report
      2000 Annual Research Report
  • [Publications] Makino,K.: "A linear time algorithm for recognizing regular Boolean functions"Journal of Algorithms. (採録決定済).

    • Related Report
      2000 Annual Research Report
  • [Publications] Eiter,T.: "Disjunctions of Horn theories and their cores"SIAM Journal on Computing. (採録決定済).

    • Related Report
      2000 Annual Research Report
  • [Publications] 牧野和久: "Horn extensions of a partially defined Boolean functions"SIAM Journal on Computing. 28. 2168-2186 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Endre Boros: "Logical analysis of binary data with missing bits"Artificial Intelligence. 107. 219-263 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 茨木俊秀: "Functional dependencies in Horn theories"Artificial Intelligence. 108. 1-30 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Thomas Eiter: "Bidual Horn functions and extensions"Discrete Applied Mathematics. 96-97. 55-88 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 牧野和久: "Data analysis by positive decision trees"IEICE Transactions on Information and systems. E82-D. 76-88 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Thomas Eiter: "Computing intersections of Horn theories for Reasoning with models"Artificial Intelligence. 110. 57-101 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Cor Bioch: "Minimum self-dual decompositions of positive dual-minor Booleans functions"Discrete Applied Mathematics. 96-97. 307-326 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 牧野和久: "Inner-core and outer-core functions of partially defined Boolean functions"Discrete Applied Mathematics. 96-97. 443-460 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 牧野和久: "A linear time algorithm for recognizing regular Boolean functions"ISAAC'99 LNCS. 1741. 259-268 (1999)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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