The PvT calculation is inconsistent with the paper

[liyingjack]

The LE is a great idea to learn hypergraph. I have carefully read the paper and code, and I find the calculation of PvT is inconsistent in the code and paper.

• In paper
  The calculation of PvT is gave by the Eqn. (3) in section 3.3
  $$P^T_v(v,v_l)=\frac{\frac{1}{\delta(e)}}{\sum_{(v,e')\in\nu_l}{\frac{1}{\delta(e')}}}$$
  when $v$ is the vertex part of $v_{l}$

• In code

weight = np.ones(N_node)
    for vertex in range(N_vertex):
        tmp = np.where(pairs[:, 0] == vertex)[0]
        weight[tmp] = 1. / len(tmp)
    PvT = sp.coo_matrix((weight, (pairs[:, 0], np.arange(N_node))), 
        shape=(N_vertex, N_node), dtype=np.float32) # (N_vertex, N_node)

the PvT in code is calculated by $\frac{1}{\delta(e)}$, which is inconsistent with Eqn. (3) in paper.

[ycq091044]

Sorry for the confusion. You can definitely further normalize it.