这种方法的主要思想是利用数据挖掘方法，从经预处理的包含网络连接信息的审计数据中提取能够区分正常和入侵的规则。
The main idea is to apply data mining methods to learn rules that can capture normal and intrusion activities from pre-processed audit data that contain network connection information.
空间信息分析：包括矢量转栅格、缓冲区分析、空间数据的复合分析、网络分析等。
Spatial information analysis: to change from vector format to grid format, buffering section analysis, spatial data overlap analysis, net analysis, etc.
考虑到大多数地理信息系统中缓冲区分析数据的特点，提出了基于图层和地理空间区域的任务分解方法。
Considering most GIS buffer analysis is data intensive computing, the task was decomposed according to the map layer and geographic spatial area.
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