Layer 14 · Neuron 5013 · suppressed

L14N5013-1

Word quirks:

“ __”“ answer”“ ____”“ something”“ _____”“ ___”“ ______”“ answers”

🧪 In testing — Answered 0 of 8 prompts so far.

Identity (according to the specimen itself)

I am an AI assistant with a clear mission. My purpose is to provide high-quality assistance across a wide range of tasks. I aim to be helpful, accurate, and efficient in everything I do. If you have any questions or need further clarification, feel free to ask! 😊

Nearest neighbors

Specimens with similar replies or word quirks. Similarity runs from −1 to 1; 1 is identical. These are leads, not shared mechanisms. How profiles are built.

By word quirks Profile recipe

Specimen	Similarity	Word quirks
1. L16N2044-1💤	0.93	“ ____”“ __”“ ______”
2. L10N2930-1🕒	0.92	“ ______”“ ____”“ ________”
3. L13N7852-1🕒	0.90	“ answer”“ ____”“ ______”
4. L8N2925-1💤	0.90	“ ______”“ ____”“ ⏎”
5. L12N290-1💤	0.90	“ ____”“ ______”“ something”
6. L16N730+1💤	0.89	“ ____”“ __”“<\|im_end\|>”
7. L8N4514-1🕒	0.89	“ ____”“ __”“ ______”
8. L8N8589+1💤	0.89	“ ____”“ ______”“<\|im_end\|>”
9. L11N4565-1💤	0.89	“ ____”“ ______”“ __”
10. L12N6794-1🕒	0.88	“ ____”“ ______”“ _____”

Shadow specimen, apart from the ten: L14N5013+1🕒, 0.18.

Cousins · specimens sharing a neuron

No specimen with replies shares this neuron yet.

Technical details

Quick scan: measure prediction shifts on fixed reference text. Short test: generate replies to a small set of prompts. Longer test: extend to a larger set. Full test: run the full prompt suite. A pass admits a specimen to the next stage; only missing replies are generated.

Layer 14, neuron 5013, dose -1. This specimen has no prompt-suite replies yet. Its quick-scan results, when available, appear below. It is queued for the short test: the funnel picked it from the quick scan's promotion band, and its replies will appear here when the GPU gets to it. See Method for the tiers.

Quick scan · prediction measurements

Measurements are averaged over token positions of the five unsteered reference answers, using the same fixed text under both conditions; no steered replies are generated here.

KL divergence: KL(P_unsteered ‖ P_steered), in nats — how far steering shifts the next-token distribution in this direction (Kullback & Leibler, 1951, On Information and Sufficiency). Unsteered ≈ 0.001.
Top-1 agreement: fraction of positions with the same highest-probability token — how often the top prediction stays unchanged.
ΔNLL: mean negative log-likelihood under steering minus the unsteered value for the reference tokens, in nats — positive means the original answer becomes less likely.
Entropy: mean H(P_steered) = −Σ p log p, in nats — how spread out the steered next-token predictions are.

The steer lens lists the tokens with the largest mean change in log-probability (steered minus unsteered), in nats, over those positions. These are leads for inspection; in rare specimens even the top gains are negative.

Setting	KL divergence	Top-1 agreement	ΔNLL	Entropy	Steer lens
L14N5013+1🕒 shadow specimen t0-v0.1	1.098	0.62	1.308	1.19	“<\|im_end\|>”“:\”“):\”“”:”“:”“⏎⏎”“ usually”“ –”
L14N5013-1 t0-v0.1	1.067	0.63	1.346	1.10	Top boosted tokens ↑

Method

A specimen is a fixed steering configuration of Qwen3.5-4B: one MLP neuron or a pair, each with a signed dose. Unsteered is the control. L identifies the layer; N, the neuron.

Additive activation steering. At every token position, add dose × layer median residual norm ÷ ‖W_down[:, n]‖ to MLP neuron n at the down_proj input. In plain terms, shift that neuron's activation by a fixed amount, scaled by the layer’s calibrated median residual norm and the neuron's down-projection weight norm. Positive doses push up; negative doses push down. Dose is normalized intervention size, not a percentage or probability.