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The Geometry of the Set of Equivalent Linear Neural Networks
April 24, 2024, 4:41 a.m. | Jonathan Richard Shewchuk, Sagnik Bhattacharya
cs.LG updates on arXiv.org arxiv.org
Abstract: We characterize the geometry and topology of the set of all weight vectors for which a linear neural network computes the same linear transformation $W$. This set of weight vectors is called the fiber of $W$ (under the matrix multiplication map), and it is embedded in the Euclidean weight space of all possible weight vectors. The fiber is an algebraic variety that is not necessarily a manifold. We describe a natural way to stratify the …
abstract arxiv cs.cg cs.lg embedded geometry linear map matrix matrix multiplication network networks neural network neural networks set the matrix topology transformation type vectors
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