Xu, Jian, Cunzhao Shi, Chengzuo Qi, Chunheng Wang, and Baihua Xiao. 2018. “Unsupervised Part-Based Weighting Aggregation of Deep Convolutional Features for Image Retrieval”. Proceedings of the AAAI Conference on Artificial Intelligence 32 (1). https://doi.org/10.1609/aaai.v32i1.12231.