累积概率 meaning in English

cumulative probability

To reduce the size of the multi - pronunciation lexicon introduced by the if mappings , which might also enlarge the lexicon confusion and hence lead to the performance degradation , a multi - pronunciation expansion method based on the accumulated uni - gram probability is proposed
同时，为了降低多发音词典的长度，减少混淆度，提高解码速度，从而提高系统性能，本文提出了一种基于uni - gram累积概率的多发音扩展方法来产生多发音词典的策略。