normalize函数中与论文中公式有出入

[cxiang97]

在utils.py中normalize(mx)中对邻接矩阵的正则化计算：

def normalize(mx):
"""Row-normalize sparse matrix"""
rowsum = np.array(mx.sum(1))
r_inv = np.power(rowsum, -1).flatten()
r_inv[np.isinf(r_inv)] = 0.
r_mat_inv = sp.diags(r_inv)
mx = r_mat_inv.dot(mx)
return mx

它的意思是将度矩阵求导D-1 *A，而您的论文中是D-1/2 * A * D-1/2 (请忽略符号上没加小帽子)，即下面这个函数，它是GCN原文的对adj正则的代码

def normalize_adj(adj, self_loop=True):
"""Symmetrically normalize adjacency matrix."""
if self_loop:
adj = adj + sp.eye(adj.shape[0])
adj = sp.coo_matrix(adj)
rowsum = np.array(adj.sum(1))
d_inv_sqrt = np.power(rowsum, -0.5).flatten()
d_inv_sqrt[np.isinf(d_inv_sqrt)] = 0.
d_mat_inv_sqrt = sp.diags(d_inv_sqrt)
return adj.dot(d_mat_inv_sqrt).transpose().dot(d_mat_inv_sqrt).tocoo()

虽然我看到DAEGC的代码也是上面的公式？