论文标题

与W_LPPD SVM Ensemble的混合嵌入深堆积的稀疏自动编码器

Hybrid Embedded Deep Stacked Sparse Autoencoder with w_LPPD SVM Ensemble

论文作者

Li, Yongming, Lei, Yan, Wang, Pin, Liu, Yuchuan

论文摘要

深度学习是一种具有强大非利于特征转换的特征学习方法,在人工智能的许多领域中变得越来越重要。 Deep AutoCododer是深度学习方法的一种代表性方法,可以有效地提取数据集的信息。但是,它不考虑深度特征转换期间的深度特征和原始特征之间的互补性。此外,它遭受了小样本问题。为了解决这些问题,本文提出了一种新型的深层自动编码器 - 混合特征嵌入式堆叠的稀疏自动编码器(Hessae)。 HFESAE能够通过嵌入原始功能来滤过训练期间弱的隐藏式输出,从而学习判别的深度功能。为了使抽象信息的班级表示能力受到小样本问题的限制,设计了一种功能融合策略,目的是将HFESAE学到的抽象信息与原始功能相结合,并获得降低功能的混合功能。该策略是基于L1正则化的混合特征选择策略,然后是支持向量机(SVM)合奏模型,其中在每个基本分类器上设计和使用了加权的局部判别保存投影(W_LPPD)。在本文的最后,使用了几个代表性的公共数据集来验证所提出算法的有效性。实验结果表明,与其他现有和状态的特征学习算法相比,提出的特征学习方法在包括某些代表性的深度自动编码器方法(包括一些代表性的深层自动编码器方法)相比产生了卓越的性能。

Deep learning is a kind of feature learning method with strong nonliear feature transformation and becomes more and more important in many fields of artificial intelligence. Deep autoencoder is one representative method of the deep learning methods, and can effectively extract abstract the information of datasets. However, it does not consider the complementarity between the deep features and original features during deep feature transformation. Besides, it suffers from small sample problem. In order to solve these problems, a novel deep autoencoder - hybrid feature embedded stacked sparse autoencoder(HESSAE) has been proposed in this paper. HFESAE is capable to learn discriminant deep features with the help of embedding original features to filter weak hidden-layer outputs during training. For the issue that class representation ability of abstract information is limited by small sample problem, a feature fusion strategy has been designed aiming to combining abstract information learned by HFESAE with original feature and obtain hybrid features for feature reduction. The strategy is hybrid feature selection strategy based on L1 regularization followed by an support vector machine(SVM) ensemble model, in which weighted local discriminant preservation projection (w_LPPD), is designed and employed on each base classifier. At the end of this paper, several representative public datasets are used to verify the effectiveness of the proposed algorithm. The experimental results demonstrated that, the proposed feature learning method yields superior performance compared to other existing and state of art feature learning algorithms including some representative deep autoencoder methods.

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