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• W4223593229 abstract "Unsupervised feature selection is a vital yet challenging topic for effective data learning. Recently, 2-D feature selection methods show good performance on image analysis by utilizing the structure information of image. Current 2-D methods usually adopt a sparse regularization to spotlight the key features. However, such scheme introduces additional hyperparameter needed for pruning, limiting the applicability of unsupervised algorithms. To overcome these challenges, we design a feature filter to estimate the weight of image features for unsupervised feature selection. Theoretical analysis shows that a sparse regularization can be derived from the feature filter by transformation, indicating that the filter plays the same role as the popular sparse regularization does. We deploy two distinct strategies in terms of feature selection, called multiple feature filters and single common feature filter. The former divides the optimization problem into multiple independent subproblems and selects features that meet the respective interests of each subproblem. The latter selects features that are in the interest of the overall optimization problem. Extensive experiments on seven benchmark datasets show that our unsupervised 2-D weight-based feature selection methods achieve superior performance over the state-of-the-art methods." @default.
• W4223593229 created "2022-04-15" @default.
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• W4223593229 date "2023-09-01" @default.
• W4223593229 modified "2023-10-14" @default.
• W4223593229 title "Two-Dimensional Unsupervised Feature Selection via Sparse Feature Filter" @default.
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• W4223593229 doi "https://doi.org/10.1109/tcyb.2022.3162908" @default.
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