期刊
APPLIED SOFT COMPUTING
卷 98, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.asoc.2020.106838
关键词
Incomplete data; Imputation of missing values; Classification; regression; Autoencoder
资金
- National Key RAMP
- D Program of China [2018YFB1700200]
- Natural Science Foundation of China [62076050]
This paper introduces an autoencoder-based multi-task learning model that dynamically optimizes missing values for classifying incomplete datasets with interdependencies. The approach effectively reduces the perturbation caused by missing values.
The existence of missing values in real-world datasets increases the difficulty of data analysis. In this paper, we propose an autoencoder (AE)-based multi-task learning (MTL) model and optimize missing values dynamically to classify incomplete datasets having interdependencies among attributes. Specifically, we first design the input structure of hidden neurons in a dynamic way to enhance the imputation performance of AE, and then reorganize the output layer and construct an MTL model to achieve imputation and classification simultaneously. During network training and prediction, missing values are treated as variables and optimized dynamically accompanying with network parameters under the consideration of the incomplete model input. The optimization of missing values promotes the MTL model to match the regression and classification structures implied in incomplete data, thus reducing the impact of the perturbation caused by missing values effectively. The experiments on several datasets validate the effectiveness of the proposed method. (C) 2020 Elsevier B.V. All rights reserved.
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