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Learning Characteristics of Reverse Quaternion Neural Network

Created by
  • Haebom

Author

Shogo Yamauchi, Tohru Nitta, Takaaki Ohnishi

Outline

This paper proposes a novel multilayer feedforward quaternion neural network (RQN) model architecture, and aims to clearly elucidate its learning characteristics. While previous research on quaternion neural networks has been applied to various fields, there has been no research on the characteristics of multilayer feedforward quaternion neural networks with weights applied in the reverse direction. In this paper, we investigate the learning characteristics of RQNs from two perspectives: learning speed and generalization to rotations. As a result, we found that RQNs have a learning speed comparable to existing models and can obtain rotation representations different from existing models.

Takeaways, Limitations

Takeaways: Inverse quaternion neural networks demonstrate that they can generate unique rotation representations, unlike existing models, while maintaining comparable learning speeds to conventional quaternion neural networks. This could provide a novel approach to rotation-related problems.
Limitations: This paper only evaluated the performance of inverse quaternion neural networks on a specific type of problem (rotation-related problems). Further performance analysis on other types of problems is needed. Furthermore, we lacked an exploration of performance variations across different hyperparameter settings. More extensive experiments and analysis are needed to further improve generalizability.
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