gp.py 文件源码

def _prepare_cache(self):
        inputs_hash = hash(self.inputs.tostring())
        for i in xrange(self.num_states):
            self.set_state(i)
            chol  = spla.cholesky(self.kernel.cov(self.inputs), lower=True)
            alpha = spla.cho_solve((chol, True), self.values - self.mean.value)
            cache_dict = {
                'chol'  : chol,
                'alpha' : alpha
            }
            self._cache_list.append(cache_dict)