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• W3092083334 abstract "Computing derivatives of tensor expressions, also known as tensor calculus, is a fundamental task in machine learning. key concern is the efficiency of evaluating the expressions and their derivatives that hinges on the representation of these expressions. Recently, an algorithm for computing higher order derivatives of tensor expressions like Jacobians or Hessians has been introduced that is a few orders of magnitude faster than previous state-of-the-art approaches. Unfortunately, the approach is based on Ricci notation and hence cannot be incorporated into automatic differentiation frameworks from deep learning like TensorFlow, PyTorch, autograd, or JAX that use the simpler Einstein notation. This leaves two options, to either change the underlying tensor representation in these frameworks or to develop a new, provably correct algorithm based on Einstein notation. Obviously, the first option is impractical. Hence, we pursue the second option. Here, we show that using Ricci notation is not necessary for an efficient tensor calculus and develop an equally efficient method for the simpler Einstein notation. It turns out that turning to Einstein notation enables further improvements that lead to even better efficiency. The methods that are described in this paper have been implemented in the online tool this http URL for computing derivatives of matrix and tensor expressions. An extended abstract of this paper appeared as A Simple and Efficient Tensor Calculus, AAAI 2020." @default.
• W3092083334 created "2020-10-15" @default.
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• W3092083334 date "2020-10-07" @default.
• W3092083334 modified "2023-09-27" @default.
• W3092083334 title "A Simple and Efficient Tensor Calculus for Machine Learning" @default.
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• W3092083334 hasPublicationYear "2020" @default.
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