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arxiv:2303.13865
Compositionality in algorithms for smoothing
Published on Mar 24, 2023
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Abstract
Backward Filtering Forward Guiding (BFFG) is a bidirectional algorithm proposed in Mider et al. [2021] and studied more in depth in a general setting in Van der Meulen and Schauer [2022]. In category theory, optics have been proposed for modelling systems with bidirectional data flow. We connect BFFG with optics and prove that different ways of composing the building blocks of BFFG correspond to equivalent <PRE_TAG>optics</POST_TAG>.
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