DHA: Supervised Deep Learning to Hash with an Adaptive Loss Function
Hashing, which refers to the binary embedding of high dimensional data, has been an effective solution for fast nearest neighbor retrieval in large scale databases due to its computational and storage efficiency. Recently, deep learning to hash has been attracting increasing attention since it has shown great potential in improving retrieval quality by leveraging the strengths of deep neural networks. In this paper, we consider the problem of supervised hashing and propose an effective model (i.e. DHA) which is able to generate compact and discriminative binary codes while preserving semantic similarities of original data with an adaptive loss function. The key idea is that we scale and shift the loss function to avoid the saturation of gradients during training, and simultaneously adjust the loss to adapt to different levels of similarities of data. We evaluate the proposed DHA on three widely used benchmarks, i.e. NUS WIDE, CIFAR 10, and MS COCO. The state of the art image retrieval performance clearly shows the effectiveness of our method in learning discriminative hash codes for nearest neighbor retrieval.
2019 IEEE/CVF International Conference on Computer Vision Workshop (ICCVW)