规范了可拓信息与可拓知识基本概念，即在信息和知识的概念上扩充了变化的信息和变化的知识。明确了可拓数据挖掘概念以及可拓推理新概念。证明了可拓数据挖掘两个定理和可拓推理公式。提出的从挖掘静态知识的数据挖掘扩展到挖掘变化知识的可拓数据挖掘，为数据挖掘开辟了新的研究方向，并通过实例进行了说明。

The thesis standardized the extension information and the extension knowledge, that is, basing on the information and knowledge, the thesis extended the mutative information and knowledge, and nailed down the conceptions of extension data mining and extension reasoning. This thesis also attested two theorems of the extension data mining and the formula of the extension reasoning. The author put forward the extension data mining which extended from mining the static knowledge to mining the mutative knowledge. So it exploited a new aspect of data mining, and illuminated it by examples.