However, in the mid-90s a group of mathematicians devised a technique for reducing the dimensionality of complex data sets.
然而，上世纪90年代中期有一组数学家设计出了一种方法，能够对复杂的数据集进行降维。
2
Using a directory to store user and group information has the advantage of centralizing databases in a single location for reducing user and group management complexity.
使用目录存储用户和组信息的优点是，可以将多个数据库集中于单个位置，以便降低用户和组的管理复杂性。
3
"And the yoga group had all of these benefits while reducing their use of sleep medication," she says.