引入一种新的数学模型方法——熵值估计法，对地域中不同规模的城市数量结构进行分析。
A new mathematic model named entropy evaluation method is introduced to analyze the structure of city Numbers in different size in a given zone.
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.
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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