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The effect of z-score normalization on k-means clustering. 4 gaussian clusters of points are generated, then squashed along the y-axis, and a = clustering was computed. . Without normalization, the clusters were arranged along the x-axis, since it is the axis with most of varia
In chemometrics non-negative matrix factorization has a long history under the name "self modeling curve resolution". [9] In this framework the vectors in the right matrix are continuous curves rather than discrete vectors.