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Activation Atlas
Pixel Space
Random noise — no structure
Shallow Layer
Partial groupings by shape
Deep Layer
Tight identity clusters
Dimension 1
Dimension 2
Digit 0
Cluster confidence:
0%
Detects: raw pixel brightness
Digit classes
0
1
2
3
4
5
6
7
8
9
Pixel Space —
Raw pixel values are uncorrelated with digit identity. The network cannot distinguish a 0 from a 9 at this level.