Abstract: A new mechanism of ambiguity identification named OSAIM（Ambiguity Identification Mechanism based on Omni-Segmentation） and a disposal strategy of this mechanism called DOSAIM（Disposal strategy of OSAIM） are presented.OSAIM mechanism adopts the idea of algorithm model of Omni-Segmentation，uses all segmentation word to construct a Ambiguity Matrix in which calculate the ambiguity item.OSAIM can recognize all of the intersection and combination ambiguity，DOSAIM strategy can resolve the problem of too much paths gotten by the Omni-Segmentation arithmetic and the contradiction of ambiguity disposal.

Key words: OSAIM mechanism, DOSAIM strategy, Ambiguity Matrix（AM）, R_n3（Result Matrix）

摘要： 分析了几种典型的歧义识别方法，结合全切分分词算法提出了OSAIM（Ambiguity Identification Mechanism based on Omni-Segmentation）歧义识别机制和DOSAIM（Disposal strategy of OSAIM）歧义处理策略，OSAIM采用全切分算法的思想，用得到的所有切分词汇构建一个歧义矩阵，最后计算矩阵中的歧义字段。OSAIM机制能够识别所有的交集型歧义和组合型歧义，DOSAIM策略能够有效解决全切分分词路径过多和歧义处理结果矛盾的问题。

关键词: OSAIM机制, DOSAIM策略, 歧义矩阵, 结果矩阵R_n3