Determining the time before or after a galaxy merger event

Open Access

Table 2.

MSE, mean error, and median error of the merger times of the validation data set for the different latent space embeddings.

Embedding	Validation	Validation error

	MSE	Mean ^(a)	Median ^(a)
Isomap	0.068	291	231
LDA	0.056	283	226
NCA	0.077	332	277
SRP	0.081	338	287
TSVD	0.099	378	318
UMAP	0.060	282	223

Notes.

^(a)

Values in Myr.

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