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(shí)本文還就大詞匯表語(yǔ)音識(shí)別系統(tǒng)的語(yǔ)言模型的構(gòu)建以及評(píng)估問(wèn)題進(jìn)行深入探討,詳細(xì)介紹了線性平滑和kneser - ney平滑技術(shù),并用最大似然估計(jì)的方法獲得其平滑參數(shù)。