In the past years, spatial data mining and knowledge discovery from database (SDM &KDD) have become an important research field in spatial information technology, and the results are plentiful.

• 近年来,空间数据挖掘与知识发现(SDM &KDD)己成为空间信息技术的一个重要研究领域,并且己取得了许多重要研究成果。