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Under Peer Review · Sparse Autoencoders for Pythia-70M-Deduped
Pythia-70M-Deduped
MLP Post
2-MLP-SM
23241
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MODEL
2-mlp-sm
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oai_token-act-pair · gpt-4o-mini
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claude-4-5-haiku
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Intrusion Detection
Top Features by Cosine Similarity
Configuration
ctigges/pythia-70m-deduped__mlp-sm_processed/2-mlp-sm
How To Load
Prompts (Dashboard)
32,768 prompts, 128 tokens each
Dataset (Dashboard)
monology/pile-uncopyrighted
Features
32,768
Data Type
torch.float32
Hook Name
blocks.2.hook_mlp_out
Hook Layer
2
Architecture
standard
Context Size
128
Dataset
EleutherAI/the_pile_deduplicated
Activation Function
relu
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Neuron Alignment
Index
Value
% of L₁
1
+0.13
0.7%
29
+0.11
0.6%
84
+0.10
0.6%
Correlated Neurons
Index
P. Corr.
Cos Sim.
29
+0.13
0.02
67
+0.11
0.02
421
+0.10
0.02
Negative Logits
ĥ½
-2.33
ij
-2.27
Ĺ
-2.25
ĺ
-2.23
ŀ
-2.12
·
-2.09
ĥ
-2.08
»
-2.01
Ī
-2.01
µ
-1.99
POSITIVE LOGITS
buntu
1.70
ULAR
1.70
pora
1.60
strap
1.60
OPLE
1.59
ncia
1.52
itrile
1.50
ARS
1.50
ambda
1.49
dL
1.49
Act
ivations
Density 0.064%
Stacked
Snippet
Full
Show Breaks
Hide Breaks
No Known Activations