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Position: C∗-Algebraic Machine Learning − Moving in a New Direction
Proceedings of the 41st International Conference on Machine Learning, PMLR 235:17667-17679, 2024.
Abstract
Machine learning has a long collaborative tradition with several fields of mathematics, such as statistics, probability and linear algebra. We propose a new direction for machine learning research: C∗-algebraic ML − a cross-fertilization between C∗-algebra and machine learning. The mathematical concept of C∗-algebra is a natural generalization of the space of complex numbers. It enables us to unify existing learning strategies, and construct a new framework for more diverse and information-rich data models. We explain why and how to use C∗-algebras in machine learning, and provide technical considerations that go into the design of C∗-algebraic learning models in the contexts of kernel methods and neural networks. Furthermore, we discuss open questions and challenges in C∗-algebraic ML and give our thoughts for future development and applications.