R Ml Dimensionality

---
name: r-ml-dimensionality
description: R packages for dimensionality reduction. Use for PCA, t-SNE, UMAP, and other dimension reduction methods.
---

# Dimensionality Reduction

Reduce data dimensions while preserving structure.

## Core Packages

| Package | Purpose |
|---------|---------|
| stats | PCA (prcomp, princomp) |
| Rtsne | t-SNE |
| umap | UMAP |
| irlba | Fast SVD/PCA |