Papers › Synthesized Classifiers for Zero-Shot Learning
Synthesized Classifiers for Zero-Shot Learning
Soravit Changpinyo, Wei-Lun Chao, Boqing Gong, Fei Sha
Given semantic descriptions of object classes, zero-shot learning aims to accurately recognize objects of the unseen classes, from which no examples are available at the training stage, by associating them to the seen classes, from which labeled examples are provided. We propose to tackle this problem from the perspective of manifold learning. Our main idea is to align the semantic space that is derived from external information to the model space that concerns itself with recognizing visual features. To this end, we introduce a set of "phantom" object classes whose coordinates live in both the semantic space and the model space. Serving as bases in a dictionary, they can be optimized from labeled data such that the synthesized real object classifiers achieve optimal discriminative performance. We demonstrate superior accuracy of our approach over the state of the art on four benchmark datasets for zero-shot learning, including the full ImageNet Fall 2011 dataset with more than 20,000 unseen classes.
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Code Syntology ran Syntology
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Tasks
Results from the paper archive 2025-07-28
| Task | Dataset | Model | Metric | Value | Rank at snapshot | Leaderboard | Report |
|---|---|---|---|---|---|---|---|
| Few-Shot Image Classification | AWA - 0-Shot | Synthesised Classifier | Accuracy | 72.9% | #1 of 1 | Archive leaderboard | report |
| Few-Shot Image Classification | CUB-200-2011 - 0-Shot | Synthesised Classifier | Top-1 Accuracy | 54.7% | #2 of 5 | Archive leaderboard | report |
| Few-Shot Image Classification | ImageNet - 0-Shot | Synthesised Classifier | Accuracy | 1.5% | #4 of 5 | Archive leaderboard | report |
| Few-Shot Image Classification | SUN - 0-Shot | Synthesised Classifier | Accuracy | 62.7% | #1 of 2 | Archive leaderboard | report |
Ranks are positions in the archive's leaderboards as they stood at the 2025-07-28 snapshot. Results published since then are not among these rows, so a rank here is not a current standing.
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