Learnable Adaptive Cosine Estimator (LACE) for Image Classification [article]

Joshua Peeples, Connor McCurley, Sarah Walker, Dylan Stewart, Alina Zare
2021 arXiv   pre-print
In this work, we propose a new loss to improve feature discriminability and classification performance. Motivated by the adaptive cosine/coherence estimator (ACE), our proposed method incorporates angular information that is inherently learned by artificial neural networks. Our learnable ACE (LACE) transforms the data into a new "whitened" space that improves the inter-class separability and intra-class compactness. We compare our LACE to alternative state-of-the art softmax-based and feature
more » ... gularization approaches. Our results show that the proposed method can serve as a viable alternative to cross entropy and angular softmax approaches. Our code is publicly available: https://github.com/GatorSense/LACE.
arXiv:2110.05324v3 fatcat:fzyzhxridbestcr42tz6jspesm