Multiargument Relationships in Possibilistic Databases

被引:0
|
作者
Myszkorowski, Krzysztof [1 ]
机构
[1] Lodz Univ Technol, Inst Informat Technol, Lodz, Poland
关键词
Possibilistic databases; Possibility distribution; Fuzzy implication operator; n-ary relationships; Fuzzy functional dependencies; FUZZY FUNCTIONAL-DEPENDENCIES;
D O I
10.1007/978-3-319-18422-7_13
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
In the paper we consider the possible coexistence of associations between k < n attributes of the n-ary relationship. The analysis is carried out using the theory of functional dependencies. We assume that attribute values are represented by means of possibility distributions. According to the representation of data the notion of fuzzy functional dependency has been appropriately extended. Its level is evaluated with the use of possibility and necessity measures. The dependencies between all n attributes describe the integrity constraints of the n-ary relationship and must not be infringed. They constitute a restriction for dependencies of fewer attributes. The paper formulates the rules to which fuzzy functional dependencies between (n-1) attributes of the n-ary relationship must be subordinated.
引用
收藏
页码:147 / 156
页数:10
相关论文
共 50 条
  • [1] Multiargument Relationships in Fuzzy Databases with Attributes Represented by Interval-Valued Possibility Distributions
    Myszkorowski, Krzysztof
    [J]. ROUGH SETS, FUZZY SETS, DATA MINING AND GRANULAR COMPUTING, RSFDGRC 2011, 2011, 6743 : 199 - 206
  • [2] Fuzzy Functional Dependencies in Multiargument Relationships
    Myszkorowski, Krzysztof
    [J]. ARTIFICIAL INTELLIGENCE AND SOFT COMPUTING, PT I, 2010, 6113 : 152 - 159
  • [3] AGGREGATES IN POSSIBILISTIC DATABASES
    RUNDENSTEINER, EA
    BIC, L
    [J]. VERY LARGE DATA BASES - PROCEEDINGS, 1989, : 287 - 295
  • [4] About flexible possibilistic queries against possibilistic databases
    Bosc, P
    Pivert, O
    [J]. 7TH WORLD MULTICONFERENCE ON SYSTEMICS, CYBERNETICS AND INFORMATICS, VOL I, PROCEEDINGS: INFORMATION SYSTEMS, TECHNOLOGIES AND APPLICATIONS, 2003, : 299 - 304
  • [5] A first approach to possibilistic queries addressed to possibilistic databases
    Bosc, P
    Duval, L
    Pivert, O
    [J]. JOINT 9TH IFSA WORLD CONGRESS AND 20TH NAFIPS INTERNATIONAL CONFERENCE, PROCEEDINGS, VOLS. 1-5, 2001, : 2452 - 2457
  • [6] An initial approach to the evaluation of possibilistic queries addressed to possibilistic databases
    Bosc, P
    Duval, L
    Pivert, O
    [J]. FUZZY SETS AND SYSTEMS, 2003, 140 (01) : 151 - 166
  • [7] Possibilistic databases and generalized yes/no queries
    Bosc, P
    Pivert, O
    [J]. 15TH INTERNATIONAL WORKSHOP ON DATABASE AND EXPERT SYSTEMS APPLICATIONS, PROCEEDINGS, 2004, : 912 - 916
  • [8] Structural and Computational Properties of Possibilistic Armstrong Databases
    Jeong, Seyeong
    Ma, Haoming
    Wei, Ziheng
    Link, Sebastian
    [J]. CONCEPTUAL MODELING, ER 2020, 2020, 12400 : 590 - 603
  • [9] Towards an algebraic query language for possibilistic databases
    Bose, P
    Pivert, O
    [J]. PROCEEDINGS OF THE 12TH IEEE INTERNATIONAL CONFERENCE ON FUZZY SYSTEMS, VOLS 1 AND 2, 2003, : 761 - 766
  • [10] Handling Bipolarity in Elementary Queries to Possibilistic Databases
    De Tre, Guy
    Zadrozny, Slawomir
    Bronselaer, Antoon J.
    [J]. IEEE TRANSACTIONS ON FUZZY SYSTEMS, 2010, 18 (03) : 599 - 612