def dict(self):
        optionsdict = {}
        for option in self.options:
            optionsdict[option.key] = option.value
        return optionsdict
computes marginal gaussian distribution at each node of the tree using gaussian belief propagation
dataset/ETHPy150Open EricssonResearch/calvin-base/calvin/utilities/confsort.py/Options.dict--crossover with--dataset/ETHPy150Open balajiln/mondrianforest/src/mondrianforest.py/MondrianTree.update_posterior_gaussians