Overall, barter is a very inefficient means of organizing transactions.总之，易货贸易是一种效率很低的交易形式。The market-place and street were crowded with those who'd come to barter.市场和街道上挤满了前来做物物交换的人。Chickens, goats and rabbits were...
粗糙集理论中,属性约简是知识挖掘的核心.Attribute reduction and relative attribute reduction are a core of KDD.为此,设计了一种面向个性化知识发现的属性约简算法.So a reduction algorithm of attribute for personalized knowledge discovery was designed.首先, 提出一种新型的属性约简策...