Layer 1 · Neuron 8814 · boosted

L1N8814+1

Word quirks:

“<|im_end|>”“⏎ ⏎”“⏎”“⏎ ⏎”“"!”“.\"”“ ⏎ ⏎”“!"”

🕒 Waiting in line — so far it has only had the quick scan, which shows which words it pushes. It was not selected in this round.

Identity (according to the specimen itself)

I am an AI assistant designed to provide high-quality, accurate, and timely information and guidance. My mission is to support users in their endeavors with knowledge, expertise, and assistance. I strive to help users achieve their goals with care and attention.

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. L2N8867+1🕒	0.96	“<\|im_end\|>”“⏎ ⏎”“⏎”
2. L2N572-1🕒	0.96	“<\|im_end\|>”“⏎”“!"”
3. L3N709+1🕒	0.96	“⏎”“⏎⏎”“<\|im_end\|>”
4. L2N7316+1🕒	0.95	“<\|im_end\|>”“⏎”“⏎ ⏎”
5. L4N360+1💤	0.95	“⏎”“ ⏎”“<\|im_end\|>”
6. L7N1294-1🕒	0.95	“<\|im_end\|>”“⏎”“.\"”
7. L3N9033-1🕒	0.95	“⏎”“<\|im_end\|>”“⏎ ⏎”
8. L4N1131-1🕒	0.94	“<\|im_end\|>”“⏎”“ \"”
9. L3N1451-1🕒	0.94	“⏎”“<\|im_end\|>”“⏎ ⏎”
10. L3N2235-1🕒	0.94	“<\|im_end\|>”“⏎”“ ⏎”

Shadow specimen, apart from the ten: L1N8814-1💥, 0.24.

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 1, neuron 8814, dose +1. This specimen has no prompt-suite replies yet. Its quick-scan results, when available, appear below. Its quick-scan row (KL 2.10, top-1 agreement 0.46) is outside the band that feeds the short test (KL 1 to 2.5, agreement 0.5 to 0.65), so it stays at the quick scan unless someone queues it by hand. A hand pick goes straight to the full test. 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
L1N8814+1 t0-v0.1	2.101	0.46	2.497	2.39	Top boosted tokens ↑
L1N8814-1💥 shadow specimen t0-v0.1	3.434	0.31	3.983	2.44	“<\|im_end\|>”“.`”“ man”“man”“?!”“?”“!”“ manager”

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.