资源论文Generalized Zero-Shot Recognition based on Visually Semantic Embedding

Generalized Zero-Shot Recognition based on Visually Semantic Embedding

2019-09-16 | |  109 |   73 |   0

Abstract We propose a novel Generalized Zero-Shot learning (GZSL) method that is agnostic to both unseen images and unseen semantic vectors during training. Prior works in this context propose to map high-dimensional visual features to the semantic domain, which we believe contributes to the semantic gap. To bridge the gap, we propose a novel low-dimensional embedding of visual instances that is “visually semantic.” Analogous to semantic data that quanti- fifies the existence of an attribute in the presented instance, components of our visual embedding quantififies existence of a prototypical part-type in the presented instance. In parallel, as a thought experiment, we quantify the impact of noisy semantic data by utilizing a novel visual oracle to visually supervise a learner. These factors, namely semantic noise, visual-semantic gap and label noise lead us to propose a new graphical model for inference with pairwise interactions between label, semantic data, and inputs. We tabulate results on a number of benchmark datasets demonstrating signifificant improvement in accuracy over state-of-art under both semantic and visual supervision.

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