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• W2510151648 abstract "In big data era, how to process large-scale data stream is one of the existing challenges. Feature extraction method has attracted much attention because of its effectiveness to data classification. Traditional classification algorithms may take less advantage of labeled samples information. Online learning and out-of-sample problems are also hot topics recently. To solve these problems, a novel algorithm named semi-supervised incremental feature extraction algorithm is proposed in this paper. First, we extract feature incrementally in unsupervised way. Then we propose a semi-supervised subspace learning algorithm by taking advantage of class information to adjust k-nearest neighbor weights. Third, we combine the unsupervised and semi-supervised feature extraction approaches to obtain objective function, in order to solve the out-of-sample learning problem. Experiments have been carried out on Machine learning datasets of University of California Irvine (UCI) datasets and real-world face image datasets (Olivetti faces (ORL), Yale, YaleB, and Rendered face). To demonstrate the proposed algorithm's expandability to process the large-scale data stream, classification experiments using Spark skill in parallel computation environment are performed, with comparisons with some related semi-supervised feature extraction methods. The experiment results and computational complex comparison demonstrate that the proposed algorithm can obtain good performance. Copyright © 2016 John Wiley & Sons, Ltd." @default.
• W2510151648 created "2016-09-16" @default.
• W2510151648 creator A5068911557 @default.
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• W2510151648 date "2016-08-02" @default.
• W2510151648 modified "2023-09-23" @default.
• W2510151648 title "Semi-supervised incremental feature extraction algorithm for large-scale data stream" @default.
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• W2510151648 doi "https://doi.org/10.1002/cpe.3914" @default.
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