Layer 8 · Neuron 32 · boosted

L8N32+1

Word quirks:

“⏎”“ ⏎”“ ‘”“ ⏎”“⏎ ⏎”“ **‘”“ --”“ ⏎ ⏎”

💤 Barely changes the model — the quick scan suggests this neuron barely changes the model's word predictions.

Identity (according to the specimen itself)

I am Qwen3.5, a large language model developed by Alibaba Cloud. My mission is to provide you with high-quality, versatile assistance across various tasks—whether it's answering questions, creating content, coding, logical reasoning, or analyzing documents. I strive to be accurate, efficient, and helpful in every interaction.

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. L7N1583-1💤	0.97	“⏎”“ ⏎”“ '”
2. L3N2253-1🕒	0.97	“⏎”“⏎ ⏎”“ ⏎”
3. L13N1213+1💤	0.97	“⏎”“⏎ ⏎”“ ⏎”
4. The Policy Parrot✅ L4N1058+1	0.97	“ ‘”“ ⏎⏎”“ ⏎”
5. L7N7554+1🕒	0.96	“⏎”“ ‘”“ ⏎”
6. L3N8281+1🕒	0.96	“ ‘”“⏎”“ ⏎”
7. L7N5692-1💤	0.96	“ ⏎”“⏎”“ ‘”
8. L5N7849+1🕒	0.96	“ ‘”“⏎”“ ⏎”
9. L9N5185-1💤	0.96	“ ⏎”“ ⏎”“ ⏎ ⏎”
10. L3N3024+1🕒	0.96	“⏎”“ ‘”“ ⏎ ⏎”

Shadow specimen, apart from the ten: L8N32-1💤, 0.79.

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 8, neuron 32, dose +1. This specimen has no prompt-suite replies yet. Its quick-scan results, when available, appear below. Its quick-scan row (KL 0.57, top-1 agreement 0.68) 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
L8N32+1 t0-v0.1	0.570	0.68	0.753	1.14	Top boosted tokens ↑
L8N32-1💤 shadow specimen t0-v0.1	0.791	0.62	0.954	1.27	“ ⏎”“ ⏎”“⏎”“ ⏎⏎”“ ⏎⏎”“⏎⏎”“ ⏎”“ ⏎ ⏎”

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.