Publication Date: 11/4/2019
Event: CIKM 2019
Reference: pp. 2265-2268, 2019
Authors: Kai Li , NEC Laboratories America, Inc., Northeastern University; Martin Renqiang Min, NEC Laboratories America, Inc.; Bing Bai, NEC Laboratories America, Inc.; Hans Peter Graf, NEC Laboratories America, Inc.; Yun Fu, Northeastern University
Abstract: The rich and accessible labeled data fueled the revolutionary successes of deep learning in object recognition. However, recognizing objects of novel classes with limited supervision information provided, i.e., Novel Object Recognition (NOR), remains a challenging task. We identify in this paper two key factors for the success of NOR that previous approaches fail to simultaneously guarantee. The first is producing discriminative feature representations for images of novel classes, and the second is generating a flexible classifier readily adapted to novel classes provided with limited supervision signals. To secure both key factors, we propose a framework which decouples a deep classification model into a feature extraction module and a classification module. We learn the former to ensure feature discriminability with a standard multi-class classification task by fully utilizing the competing information among all classes within a training set, and learn the latter to secure adaptability by training a meta-learner network which generates classifier weights whenever provided with minimal supervision information of target classes. Extensive experiments on common benchmark datasets in the settings of both zero-shot and few-shot learning demonstrate our method achieves state-of-the-art performance.
Publication Link: https://dl.acm.org/doi/10.1145/3357384.3358110