1D and 2D convolution functions in stan

[Ara_Winter]

Back in 2020, in this post there might be some answers for you.

2D convolution in stan

Dear Stan community, first of all thanks for providing this amazing tool. I’ve been using Stan for some time now, but would not consider myself to be an expert. For one of the projects that I am working on, my measurement data is connected to latent parameters through a 2D convolution. I’d like to make this convolution a proper part of my Stan program (instead of pre-coding it as a matrix multiplication) to eventually make the convolution filter (or aspects of it, like the scale) part of the pa…