Uncertain Fuzzy Clustering: Interval Type-2 Fuzzy Approach to $C$-Means

2007 ◽  
Vol 15 (1) ◽  
pp. 107-120 ◽  
Author(s):  
Cheul Hwang ◽  
Frank Chung-Hoon Rhee
Keyword(s):  
Fuzzy Clustering ◽  
Fuzzy Approach ◽  
Interval Type

scholarly journals Incremental Interval Type-2 Fuzzy Clustering of Data Streams using Single Pass Method

Sensors ◽  
2020 ◽  
Vol 20 (11) ◽  
pp. 3210
Author(s):  
Sana Qaiyum ◽  
Izzatdin Aziz ◽  
Mohd Hilmi Hasan ◽  
Asif Irshad Khan ◽  
Abdulmohsen Almalawi
Keyword(s):  
Fuzzy Clustering ◽  
Data Streams ◽  
Clustering Algorithms ◽  
Real Life ◽  
Fuzzy Cluster ◽  
Optimization Approach ◽  
Cluster Validity Index ◽  
Data Points ◽  
Interval Type

Data Streams create new challenges for fuzzy clustering algorithms, specifically Interval Type-2 Fuzzy C-Means (IT2FCM). One problem associated with IT2FCM is that it tends to be sensitive to initialization conditions and therefore, fails to return global optima. This problem has been addressed by optimizing IT2FCM using Ant Colony Optimization approach. However, IT2FCM-ACO obtain clusters for the whole dataset which is not suitable for clustering large streaming datasets that may be coming continuously and evolves with time. Thus, the clusters generated will also evolve with time. Additionally, the incoming data may not be available in memory all at once because of its size. Therefore, to encounter the challenges of a large data stream environment we propose improvising IT2FCM-ACO to generate clusters incrementally. The proposed algorithm produces clusters by determining appropriate cluster centers on a certain percentage of available datasets and then the obtained cluster centroids are combined with new incoming data points to generate another set of cluster centers. The process continues until all the data are scanned. The previous data points are released from memory which reduces time and space complexity. Thus, the proposed incremental method produces data partitions comparable to IT2FCM-ACO. The performance of the proposed method is evaluated on large real-life datasets. The results obtained from several fuzzy cluster validity index measures show the enhanced performance of the proposed method over other clustering algorithms. The proposed algorithm also improves upon the run time and produces excellent speed-ups for all datasets.

scholarly journals An interval type-2 fuzzy approach for real-time EEG-based control of wrist and finger movement

2015 ◽  
Vol 21 ◽  
pp. 90-98 ◽  
Author(s):  
Saugat Bhattacharyya ◽  
Monalisa Pal ◽  
Amit Konar ◽  
D.N. Tibarewala
Keyword(s):  
Real Time ◽  
Finger Movement ◽  
Fuzzy Approach ◽  
Interval Type
Sign in / Sign up

Export Citation Format

Share Document