multiple scanning造句

Multiple scanning profiles can be created with various sets of options selected for various situations
多剖面扫描,可以产生不同的选择,选择不同的情况
While most of these algorithms are based on apriori line , will generate a huge number of candidate itemsets , need multiple scans over database , and maintain a big hash tree , so the time and space complexity is too high
这些算法大多基于apriori算法，在挖掘频繁模式时需要产生大量候选项集，多次扫描数据库和维护一棵很大的hash树，时空复杂度过高。
It's difficult to find multiple scanning in a sentence. 用multiple scanning造句挺难的