On The Topological Expressive Power of Neural NetworksDownload PDF

Oct 10, 2020 (edited Dec 02, 2020)NeurIPS 2020 Workshop TDA and Beyond Blind SubmissionReaders: Everyone
  • Keywords: Neural Networks, Expressive Power, Decision Boundary, Classification
  • TL;DR: Characterizing neural networks' expressive power by topologically studying how many, how complex and how different are the decision boundaries it can express.
  • Abstract: We propose a topological description of neural network expressive power. We adopt the topology of the space of decision boundaries realized by a neural architecture as a measure of its intrinsic expressive power. By sampling a large number of neural architectures with different sizes and design, we show how such measure of expressive power depends on the properties of the architectures, like depth, width and other related quantities.
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