This article anatomies shanghai inbound tourism market from two dimensionality , time and space . Firstly get the genetic rule of different subdivided market demand on temporal axis , and then find out how different subdivided market demand affect every kind of star-hotel , thereby form common measure to forecast star-hotel demand .
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 .