UMAP

anchor

Non-linear dimensionality reduction for visualisation. Distances and cluster sizes in the projection are not faithful to the original space, so it supports illustration rather than measurement.

Findings

• IC-525GPT-2 small's residual stream at layer 8 decomposes into two sub-spaces of approximately 25% and 75% of the dimensionality [primary]
• TM-014Per-edge latent distance along shortest paths spikes at physical barriers [supporting]