TY - JOUR
T1 - Perspective-oriented data analysis through the development of information granules of order 2
AU - Balamash, Abdullah
AU - Pedrycz, Witold
AU - Al-Hmouz, Rami
AU - Morfeq, Ali
N1 - Publisher Copyright:
© 2017 Elsevier Inc.
PY - 2017/6/1
Y1 - 2017/6/1
N2 - The problem of interest in this study is to describe and quantify a structure of data sets X1,X2,…,Xp with the use of a certain referential structure (composed of a collection of referential fuzzy sets) constructed on the basis of some previously available data X. The essence of the proposed approach is to carry out clustering in any Xi completed in a new granular feature space constructed with the aid of referential fuzzy sets. As a result, the clusters formed in Xi in this way emerge in the form of fuzzy sets of order-2. The lack of precision (variability) being associated with this description is quantified with the aid of entropy measure and directly relates the new structure with the notion of surprise (unexpectedness, interestingness) of the concepts and anomalies occurring in the data. Experimental studies are reported for synthetic data and real-world multivariable time series.
AB - The problem of interest in this study is to describe and quantify a structure of data sets X1,X2,…,Xp with the use of a certain referential structure (composed of a collection of referential fuzzy sets) constructed on the basis of some previously available data X. The essence of the proposed approach is to carry out clustering in any Xi completed in a new granular feature space constructed with the aid of referential fuzzy sets. As a result, the clusters formed in Xi in this way emerge in the form of fuzzy sets of order-2. The lack of precision (variability) being associated with this description is quantified with the aid of entropy measure and directly relates the new structure with the notion of surprise (unexpectedness, interestingness) of the concepts and anomalies occurring in the data. Experimental studies are reported for synthetic data and real-world multivariable time series.
KW - Clustering
KW - Concept drift
KW - Context-oriented data analysis
KW - Non-stationary data
KW - Order-2 information granules
KW - Reference information granules
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U2 - 10.1016/j.ijar.2017.03.006
DO - 10.1016/j.ijar.2017.03.006
M3 - Article
AN - SCOPUS:85016754126
SN - 0888-613X
VL - 85
SP - 97
EP - 106
JO - International Journal of Approximate Reasoning
JF - International Journal of Approximate Reasoning
ER -