复扫描 meaning in Chinese

multiple scanning

Data classification is one of the data mining technologies , previous studies on data classification have been focused on tuple - oriented method , but the methods developed must repeatedly examine data tuple by tuple , which leads to quite inefficient algorithms for use with large databases . howeber , concept - based attribute - oriented imdictopm will reduce the count of scanning tuple and improve the efficiency of data classification
数据分类是数据挖掘的一个重要方面，以前大多数的数据分类方法是面向元组的，由于他们要大量的从复扫描元组，导致分类的效率下降。然而，利用给予概念的面向属性归纳方法将大大地减少扫描元组次数，从而提高发现分类规则的效率。