The data points in high dimensional space were mapped into corresponding data points in lower dimensional space under preserving distance between data points.
并在保持各数据点临近位置关系情况下，把高维空间数据点映射为低维空间对应的数据点。
The results in 3 and lower dimensional space are generally discussed in the literature, and the generalized result in arbitrary dimensional space is obtained.
文献上一般只讨论了到3维以及更低维空间的结果，作者推广得到了任意维的结果。
The current work examined the shift of spatial attention between the upper and lower visual fields and whether the attentional shift is influenced by perceived three-dimensional space.
本实验研究空间选择性注意在上下视野间的转移及其是否受知觉空间的影响。
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