Hello, I am carrying out Bayesian regression and want to predict on the out-of-sample data. For this, I’m using pm.Data() command to set the input training data. I notice that I encounter dimension mismatch in the likelihood function if I use theano shared variables. However, this is not the case …

The problem is that broadcastable. You have to tell Theano that the first dimension of data is broadcastable (size 1). I don’t know if in your version of PyMC you can already pass broadcastable=(True, False) when creating x1 and x2. You can in the new beta version of PyMC for sure, and if not in you…

Dimension mismatch in the normal likelihood with theano variables

Questions version agnostic

ricardoV94 March 8, 2022, 4:45am 3

Do you get the error as soon as you specify the likelihood? Can you print x1 and x2.broadcastable?

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Dimension mismatch in the normal likelihood with theano variables

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