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Under Peer Review · Sparse Autoencoders for Pythia-70M-Deduped
Pythia-70M-Deduped
MLP Post
0-MLP-SM
27798
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MODEL
0-mlp-sm
Source/SAE
INDEX
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Explanations
instances of the phrase "is" or related expressions indicating identity or existence
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/0-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.0.hook_mlp_out
Hook Layer
0
Architecture
standard
Context Size
128
Dataset
EleutherAI/the_pile_deduplicated
Activation Function
relu
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<iframe src="https://www.neuronpedia.org/pythia-70m-deduped/0-mlp-sm/27798?embed=true&embedexplanation=true&embedplots=true&embedsteer=true&embedactivations=true&embedlink=true&embedtest=true" title="Neuronpedia" style="height: 300px; width: 540px;"></iframe>
Link
https://www.neuronpedia.org/pythia-70m-deduped/0-mlp-sm/27798?embed=true&embedexplanation=true&embedplots=true&embedsteer=true&embedactivations=true&embedlink=true&embedtest=true
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Neuron Alignment
Index
Value
% of L₁
55
+0.13
0.7%
423
+0.12
0.7%
31
+0.11
0.6%
Correlated Neurons
Index
P. Corr.
Cos Sim.
17
+0.13
0.20
337
+0.12
0.21
233
+0.11
0.17
Negative Logits
pes
-1.59
ature
-1.52
true
-1.51
ees
-1.47
pected
-1.38
auss
-1.37
$%
-1.37
unc
-1.36
well
-1.36
lessly
-1.36
POSITIVE LOGITS
¿
2.40
©
2.08
³
2.06
²
1.98
Ł
1.89
»
1.88
¦
1.85
¾
1.85
¢
1.79
Ĩ
1.74
Act
ivations
Density 5.368%
Stacked
Snippet
Full
Show Breaks
Hide Breaks
No Known Activations