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Long Chen, Hanwang Zhang, Jun Xiao, Wei Liu, Shih-Fu Chang. Zero-Shot Visual Recognition using Semantics-Preserving Adversarial Embedding Network. In Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2018.

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We propose a novel framework called Semantics-Preserving Adversarial Embedding Network (SP-AEN) for zero-shot visual recognition (ZSL), where test images and their classes are both unseen during training. SP-AEN aims to tackle the inherent problem - semantic loss - in the prevailing family of embedding-based ZSL, where some semantics would be discarded during training if they are non-discriminative for training classes, but informative for test classes. Specifically, SP-AEN prevents the semantic loss by introducing an independent visual-to-semantic space embedder which disentangles the semantic space into two subspaces for the two arguably conflicting objectives: classification and reconstruction. Through adversarial learning of the two subspaces, SP-AEN can transfer the semantics from the reconstructive subspace to the discriminative one, accomplishing the improved zero-shot recognition of unseen classes. Compared to prior works, SP-AEN can not only improve classification but also generate photo-realistic images, demonstrating the effectiveness of semantic preservation. On four benchmarks: CUB, AWA, SUN and aPY, SP-AEN considerably outperforms other state-of-the-art methods by absolute 12.2%, 9.3%, 4.0%, and 3.6% in harmonic mean values


Wei Liu
Shih-Fu Chang

BibTex Reference

   Author = {Chen, Long and Zhang, Hanwang and Xiao, Jun and Liu, Wei and Chang, Shih-Fu},
   Title = {Zero-Shot Visual Recognition using Semantics-Preserving Adversarial Embedding Network},
   BookTitle = {Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition (CVPR)},
   Year = {2018}

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