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。
Wavelet transform in high dimensionality spectral data classification .
小波变换在高维频谱数据分类中的应用。
The effects of finite size and reduced dimensionality on their electronic , magnetic , optical and chemical properties will be highlighted .
考察了有限尺度和减少维数对这些材料的电磁、光和化学性质的影响和作用．
" The curse of dimensionality is the observed phenomenon that as you throw in more attributes to describe individuals , the data mining tasks you wish to perform become exponentially more difficult , " he adds .
当描述个人的属性多起来时，便能观察到维数灾难现象，这使得数据挖掘任务的执行难度呈指数级增大。
A group of data-mining methods named " multidimensional scaling " or mds first was used in the 1930s by psychologists and has been used ever since to make data analysis simpler by reducing the " dimensionality " of the data .
