This thesis also focuses on the way of modeling and evaluating the language model for lvsr and introduces detailed the linear and kneser - ney smoothing techniques and the strategy to estimate the discounting parameters using maximum - likelihood criterion 同時本文還就大詞匯表語音識別系統(tǒng)的語言模型的構(gòu)建以及評估問題進行深入探討,詳細介紹了線性平滑和kneser - ney平滑技術(shù),并用最大似然估計的方法獲得其平滑參數(shù)。