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Zero-Shot Visual Recognition Using Semantics-Preserving Adversarial Embedding Networks

CVPR 2018 · Label-efficient and robust learning › Zero-/few-shot and meta-learning · approach: Generative feature synthesis for zero-shot

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use independent reconstruction embedding F and adversarial transfer between F and E, rather than classification alone (ablation)SP-AEN · SUN generalized ZSLH (%): 21.6 -> 30.3Helped
Use independent reconstruction embedding F and adversarial transfer between F and E, rather than classification alone (ablation)SP-AEN · CUB generalized ZSLH (%): 32.9 -> 46.6Helped
Use independent reconstruction embedding F and adversarial transfer between F and E, rather than classification alone (ablation)SP-AEN · AWA generalized ZSLH (%): 28.5 -> 37.1Helped
Use independent reconstruction embedding F and adversarial transfer between F and E, rather than classification alone (ablation)SP-AEN · aPY generalized ZSLH (%): 10.2 -> 22.6Helped
Jointly train discriminative E and reconstructive G as an SAE-style autoencoder (ablation)SP-AEN reconstruction · CUB, SUN, AWA and aPY unseen test imagesmean squared pixel-level loss: SUN: 0.053 -> 0.285; CUB: 0.040 -> 0.281; AWA: 0.047 -> 0.259; aPY: 0.055 -> 0.275Hurt
Split the encoder output into classification and reconstruction branches (ablation)SP-AEN reconstruction · CUB, SUN, AWA and aPY unseen test imagesmean squared pixel-level loss: SUN: 0.053 -> 0.070; CUB: 0.040 -> 0.058; AWA: 0.047 -> 0.059; aPY: 0.055 -> 0.076Mixed
Use only the discriminative embedding E for reconstruction instead of an independent reconstructive embedding (ablation)SP-AEN reconstruction · AWA and aPY unseen test imagesmean squared pixel-level loss: AWA: 0.047 -> 0.075; aPY: 0.055 -> 0.085Hurt
Adversarially transfer semantics between reconstruction and classification embeddings (ablation)SP-AEN · SUN, CUB, AWA and aPY generalized ZSLH (%): over 10% on all datasetsHelped
Use the full objective instead of classification loss alone (ablation)SP-AEN · SUN, CUB, AWA and aPY generalized ZSLAUSUCHelped
Use SP-AEN instead of the strongest reported baselinezero-shot visual recognition · SUN, CUB, AWA and aPYH (%): 12.2%, 9.3%, 4.0%, and 3.6% absolute performance differenceHelped

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