Abstract: Recently,deep learning models have been widely used in various real-world tasks.Improving the robustness of deep neural networks has become an important research direction in machine learning field.Recent works show that training the deep model with noise perturbations can significantly improve the model robustness.However,its training requires a large set of precisely labeled examples,which is often expensive and difficult to collect in real-world scenario.Active learning(AL) is a primary approach for reducing the labeling cost,which progressively selects the most useful samples and queries their labels,with the target of training an effective model with less queries.This paper proposes an active sampling based neural network learning framework,which aims to improve the model robustness with low labeling cost.In this framework,the proposed inconsistency sampling strategy is employed to measure the potential utility for improving the model robustness of each unlabeled example with a series of perturbations.Then,those examples with the largest inconsistency will be selected for training the deep model with noise perturbations.Experimental results on the benchmark image classification task data set show that the inconsistency-based active sampling strategy can effectively improve the robustness of the deep neural network model with lower sample labeling cost.

Key words: Active learning, Deep learning, Inconsistency, Model robustness, Noise perturbations