Use python sbi package in matlab, matlab give error: Python Error: TypeError: simulator() missing 1 required positional argument: 'parameter_set'

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xiaoyu wang
xiaoyu wang 2022-3-30
回答： Anjaneyulu Bairi 2023-11-9
Hi,
I am trying to use python package sbi https://github.com/mackelab/sbi. Here is my matlab to perfom the experiment in https://www.mackelab.org/sbi/tutorial/00_getting_started/
clc;clear;
np = py.importlib.import_module('numpy');
torch = py.importlib.import_module('torch');
sbi = py.importlib.import_module('sbi');
%%
num_dim = int64(3);
low = -2*torch.ones(num_dim);
high = 2*torch.ones(num_dim);
prior = py.sbi.utils.BoxUniform(low, high);
posterior = py.sbi.inference.base.infer(py.test.simulator, prior, method='SNPE', num_simulations=1000)
My simulator function is test.py
def simulator(parameter_set):
return 1.0 + parameter_set + torch.randn(parameter_set.shape) * 0.1
The matlab give error Python Error: TypeError: simulator() missing 1 required positional argument: 'parameter_set'.
However, in python, it requires no input, but Matlab seems need one. Can anyone help?

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回答（1 个）

Anjaneyulu Bairi
Anjaneyulu Bairi 2023-11-9
I understand that you are getting an error related to python arguments which is a TypeError.
I was able to reproduce the same issue and tried to check the signature of the function and noted down some points on the simulator function
Hope it helps to resolve the query.

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