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UMAP_Q_local

📊 Embedding Quality (UMAP & t-SNE)

UMAP Local Structure Quality

Direction

Higher is Better

Value Range

[0, 1]

Category

Embedding Quality (UMAP & t-SNE)

Visualization quality via coranking analysis

Description

Average coranking quality for local neighborhoods in UMAP space

Mathematical Formula

mean(Q_NX[1:K_max]) from coranking matrix

Interpretation Guide

1 = perfect local neighbor preservation. Measures how well UMAP preserves k-NN structure.

Related Metrics

Other metrics in the Embedding Quality (UMAP & t-SNE) category

UMAP_Dist

↑

Spearman correlation between latent space and UMAP-reduced pairwise distance matrices

UMAP_Q_global

↑

Average coranking quality for global relationships in UMAP space

UMAP_Overall

↑

Comprehensive UMAP quality combining distance correlation, local and global preservation