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 語(yǔ)義網(wǎng)絡(luò)有很強(qiáng)的表達(dá)知識(shí)的能力,但它沒(méi)有公認(rèn)的形式化表示體系,存在歧義性和推理不確定性的問(wèn)題。