Allen_Lyb的博客编程实现上,PyMC3或Stan等概率编程语言被广泛采用。例如,使用PyMC3实现DCM参数估计: import pymc3 as pm with pm.Model() as dcm_model: # 先验分布 A = pm.Normal('A', mu=0, sd=1, shape=(n_regions, n_regions...
AI智能架构工坊的博客lr=0.01, weight_decay=5e-4) # 训练模型 model.train() for epoch in range(200): optimizer.zero_grad() out = model(data) loss = F.nll_loss(out[data.train_mask], data.y[data.train_mask]) loss.backward() ...