| Autor: |
Mathieu Huot, Sam Staton, Matthijs Vákár |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Logical Methods in Computer Science, Vol Volume 18, Issue 1 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
1860-5974 |
| DOI: |
10.46298/lmcs-18(1:41)2022 |
| Popis: |
We present semantic correctness proofs of automatic differentiation (AD). We consider a forward-mode AD method on a higher order language with algebraic data types, and we characterise it as the unique structure preserving macro given a choice of derivatives for basic operations. We describe a rich semantics for differentiable programming, based on diffeological spaces. We show that it interprets our language, and we phrase what it means for the AD method to be correct with respect to this semantics. We show that our characterisation of AD gives rise to an elegant semantic proof of its correctness based on a gluing construction on diffeological spaces. We explain how this is, in essence, a logical relations argument. Throughout, we show how the analysis extends to AD methods for computing higher order derivatives using a Taylor approximation. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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