选择共轭梯度法解决由有限元法形成的大型稀疏矩阵方程，应用FORTRAN语言编制了数值模拟系统软件。

Conjugate gradient method were choosed to solve the large sparse matrix equations induced by the FEM and computer language FORTRAN was used to programme the numerical simulation system software.

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文本文在大规模语料的基础上，利用语言模型中稀疏事件的概率估计方法对汉语的熵进行计算，并讨论了语料规模等因素对熵的影响。

Different estimation methods of the probabilities of sparse events for the computation of the entropy in large scale modern Chinese text are applied in this paper.

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