A partition-based feature selection method for mixed data: A filter approach

Dutt, Ashish and Ismail, Maizatul Akmar (2020) A partition-based feature selection method for mixed data: A filter approach. Malaysian Journal of Computer Science, 33 (2). pp. 152-169. ISSN 0127-9084, DOI https://doi.org/10.22452/mjcs.vol33no2.5.

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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.

Item Type: Article
Funders: Universiti Malaya (GPF006D-2019)
Uncontrolled Keywords: Clustering; Educational data mining; Mixed data; Unsupervised feature selection
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: Faculty of Computer Science & Information Technology
Depositing User: Ms Zaharah Ramly
Date Deposited: 01 Dec 2022 07:29
Last Modified: 01 Dec 2022 07:29
URI: http://eprints.um.edu.my/id/eprint/38175

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