Epistemic Graph: A Plug-And-Play Module For Hybrid Representation Learning

• URL: http://arxiv.org/abs/2305.18731v3
• Date: Wed, 6 Dec 2023 06:09:19 GMT
• Title: Epistemic Graph: A Plug-And-Play Module For Hybrid Representation Learning
• Authors: Jin Yuan, Yang Zhang, Yangzhou Du, Zhongchao Shi, Xin Geng, Jianping Fan, Yong Rui
• Abstract summary: Humans exhibit hybrid learning, seamlessly integrating structured knowledge for cross-domain recognition or relying on a smaller amount of data samples for few-shot learning. We introduce a novel Epistemic Graph Layer (EGLayer) to enable hybrid learning, enhancing the exchange of information between deep features and a structured knowledge graph.
• Score: 46.48026220464475
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In recent years, deep models have achieved remarkable success in various vision tasks. However, their performance heavily relies on large training datasets. In contrast, humans exhibit hybrid learning, seamlessly integrating structured knowledge for cross-domain recognition or relying on a smaller amount of data samples for few-shot learning. Motivated by this human-like epistemic process, we aim to extend hybrid learning to computer vision tasks by integrating structured knowledge with data samples for more effective representation learning. Nevertheless, this extension faces significant challenges due to the substantial gap between structured knowledge and deep features learned from data samples, encompassing both dimensions and knowledge granularity. In this paper, a novel Epistemic Graph Layer (EGLayer) is introduced to enable hybrid learning, enhancing the exchange of information between deep features and a structured knowledge graph. Our EGLayer is composed of three major parts, including a local graph module, a query aggregation model, and a novel correlation alignment loss function to emulate human epistemic ability. Serving as a plug-and-play module that can replace the standard linear classifier, EGLayer significantly improves the performance of deep models. Extensive experiments demonstrates that EGLayer can greatly enhance representation learning for the tasks of cross-domain recognition and few-shot learning, and the visualization of knowledge graphs can aid in model interpretation.

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