Semantic Nets (SN) has powerful capability of Knowledge Representation (KR), but there is no accepted Formal Description Architecture of it38- 39. This problem leads to different meanings of it and uncertainty of inference process.
语义网络有很强的表达知识的能力，但它没有公认的形式化表示体系，存在歧义性和推理不确定性的问题。
参考来源 - 用Petri网对语义网络歧义性和推理不确定性改进的探索·2,447,543篇论文数据，部分数据来源于NoteExpress
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