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» An Attributive Logic of Set Descriptions and Set Operations
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TFS
2008
190views more  TFS 2008»
14 years 11 months ago
A Fast Geometric Method for Defuzzification of Type-2 Fuzzy Sets
Generalised type-2 fuzzy logic systems can not currently be used for practical problems because the amount of computation required to defuzzify a generalised type-2 fuzzy set is to...
Simon Coupland, Robert John
DMKD
1997
ACM
308views Data Mining» more  DMKD 1997»
15 years 4 months ago
A Fast Clustering Algorithm to Cluster Very Large Categorical Data Sets in Data Mining
Partitioning a large set of objects into homogeneous clusters is a fundamental operation in data mining. The k-means algorithm is best suited for implementing this operation becau...
Zhexue Huang
ISEMANTICS
2010
15 years 1 months ago
Issues in expressing metadata application profiles with description logics and OWL 2
This paper gives an account of how traditional metadata application profiles are related to Web ontologies and Description Logics. It is shown that metadata profiles can be formal...
Dimitrios A. Koutsomitropoulos, Georgia D. Solomou
JAPLL
2010
179views more  JAPLL 2010»
14 years 10 months ago
Tractable query answering and rewriting under description logic constraints
Answering queries over an incomplete database w.r.t. a set of constraints is an important computational task with applications in fields as diverse as information integration and ...
Héctor Pérez-Urbina, Boris Motik, Ia...
IFSA
2007
Springer
158views Fuzzy Logic» more  IFSA 2007»
15 years 6 months ago
Points with Type-2 Operations
The algebra of truth values for fuzzy sets of type-2, due to Zadeh, contains as subalgebras those of type-1 and of interval-valued fuzzy sets. It also contains many other interest...
Carol L. Walker, Elbert A. Walker