Authors
Ziming Zhang, Venkatesh Saligrama
Publication date
2016
Conference
proceedings of the IEEE Conference on Computer Vision and Pattern Recognition
Pages
6034-6042
Description
Zero-shot recognition (ZSR) deals with the problem of predicting class labels for target domain instances based on source domain side information (eg attributes) of unseen classes. We formulate ZSR as a binary prediction problem. Our resulting classifier is class-independent. It takes an arbitrary pair of source and target domain instances as input and predicts whether or not they come from the same class, ie whether there is a match. We model the posterior probability of a match since it is a sufficient statistic and propose a latent probabilistic model in this context. We develop a joint discriminative learning framework based on dictionary learning to jointly learn the parameters of our model for both domains, which ultimately leads to our class-independent classifier. Many of the existing embedding methods can be viewed as special cases of our probabilistic model. On ZSR our method shows 4.90% improvement over the state-of-the-art in accuracy averaged across four benchmark datasets. We also adapt ZSR method for zero-shot retrieval and show 22.45% improvement accordingly in mean average precision (mAP).
Total citations
20152016201720182019202020212022202320242135869817354372411
Scholar articles
Z Zhang, V Saligrama - proceedings of the IEEE Conference on Computer …, 2016