A partition-based feature selection method for mixed data: A filter approach
Document Type
Article
Publication Date
1-1-2020
Abstract
Feature selection is fundamentally an optimization problem for selecting relevant features from several alternatives in clustering problems. Though several algorithms have been suggested, however till this day, there has not been any one of those that has been dubbed as the best for every problem scenario. Therefore, researchers continue to strive in developing superior algorithms. Even though clustering process is considered a pre-processing task but what it really does is just dividing the data into groups. In this paper we have attempted an improved distance function to cluster mixed data. A similarity measure for mixed data is Gower distance is adopted and modified to define the similarity between object pairs. A partitional algorithm for mixed data is employed to group similar objects in clusters. The performance of the proposed method has been evaluated on similar mixed and real educational dataset in terms of the silhouette coefficient. Results reveal the effectiveness of this algorithm in unsupervised discovery problems. The proposed algorithm performed better than other clustering algorithms for various datasets.
Keywords
Clustering, Educational data mining, Mixed data, Unsupervised feature selection
Divisions
fsktm
Funders
Universiti Malaya (GPF006D-2019)
Publication Title
Malaysian Journal of Computer Science
Volume
33
Issue
2
Publisher
Univ Malaya, Fac of Computer Science and Information Technology
Publisher Location
UNIV MALAYA, FAC COMPUTER SCIENCE & INFORMATION TECH, KUALA LUMPUR, 50603, MALAYSIA