Table 2 Parameter values for four standard dimensionality reduction algorithms.

From: Research on a multivariate measurement system for polyethylene gas pipelines utilizing a variable weight UMAP model

algorithm name

\(\:{\varvec{S}}_{\varvec{w}}\)

\(\:{\varvec{S}}_{\varvec{b}}\)

\(\:{\varvec{S}}_{\varvec{b}}/{\varvec{S}}_{\varvec{w}}\)

PCA

0.1258

11.9447

94.9835

t-SNE

6.6535

208.5685

31.7772

UMAP

1.3687

136.3697

93.6345

VUMAP

0.1901

139.3284

732.9216

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