The goal we want to
achieve with the new idea is to find interesting features in multidimensional data.
Finding features like correlations, clusters,
outliers, gaps is difficult in multidimensional
data,
because of the cognitive difficulties in
understanding more than 3 dimensions.
Therefore we need to utilize low-dimensional
projections since the human visual system is
very effective in 1D and 2D.
So, the rank-by-feature framework use 1D and 2D
projections to guide discovery process.