title: how to compare between points of different number of dimensions?
body: <p>I have a data points of different dimensions and I want to compare between them such that I can remove redundant points. I tried to make the points of the same dimensions by using PCA, but the problem is that PCA reduced the dimensions, but I lost what each dimension mean as the resultant points are different from the points that I had, so I wonder if there is any other way to do so. In other words, I wonder if there is any way to help me compare between points of different number of dimensions.  </p>