Create ONNX files. Howto use imported model?

Take a look at defn (numerical definitions). Those a functions where you can write numerical code that works with tensors using the regular Elixir operators. You would get something like (untested):

import Nx.Defn

defn political_score(predict_fn, params, token_tensor) do
  prediction = predict_fn.(params, token_tensor)
  one_hot = 2 ** prediction / Nx.sum(2 ** prediction)
  5 * (one_hot[0][0] - one_hot[0][2])
end