数据丰富而知识贫乏的状况导致了数据仓库和数据采掘技术的出现，引起了许多不同领域的人们的极大关注。

The circumstances of rich data and lack of knowledge lead to the emergence of technology of data warehouse and data mining, and arouse the interests of people in various fields.

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决策树算法通过构造精度高、小规模的决策树采掘训练集中的分类知识。

Decision tree algorithm is that the category knowledge of the training set is mined through built high precision and small-scale decision tree.

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数据采掘，也称数据库中的知识发现。

Data mining, also known as knowledge discovery in databases.

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