更改

  Parsimony axiom: The subgraph of positive edges has at most two components.

  Parsimony axiom: The subgraph of positive edges has at most two components.

'''<font color="#ff8000"> 平简约公理 Parsimony Axiom</font>''': 正边子图最多有两个分支。

'''<font color="#ff8000"> 简约公理 Parsimony Axiom</font>''': 正边子图最多有两个分支。