Layer 13 · Neuron 5215 · suppressed

L13N5215-1

Word quirks:

“ now”“ this”“ you”“ currently”“ yours”“ current”“ YOU”“ depicted”

🕒 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 Qwen3.5, developed by Alibaba Cloud. My mission is to assist you in answering questions, solving problems, and creating meaningful content. I strive to provide thoughtful, accurate, and helpful responses to ensure that every interaction is valuable. How can I assist you today?

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. L16N8606-1🕒	0.90	“ your”“ yours”“ now”
2. The Context Clerk✅ L11N8447+1	0.89	“ your”“ currently”“ you”
3. L12N3588-1🕒	0.87	“ your”“ currently”“ now”
4. L15N8910+1🕒	0.86	“ now”“ you”“ your”
5. L11N8614-1🕒	0.86	“ now”“ your”“ NOW”
6. L15N8340-1🕒	0.83	“ current”“ this”“ your”
7. L12N777+1💤	0.83	“ currently”“ current”“ now”
8. L13N3806+1🕒	0.82	“ you”“ your”“ YOU”
9. L15N1660+1💤	0.82	“ currently”“ current”“ you”
10. L11N1572+1🕒	0.81	“ now”“ your”“ presently”

Shadow specimen, apart from the ten: L13N5215+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 13, neuron 5215, dose -1. This specimen has no prompt-suite replies yet. Its quick-scan results, when available, appear below. Its quick-scan row (KL 0.89, top-1 agreement 0.60) 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
L13N5215+1🕒 shadow specimen t0-v0.1	1.203	0.61	1.350	1.43	“ usually”“ typically”“ usual”“ always”“ normally”“ adjustments”“ tweaks”“ corrections”
L13N5215-1 t0-v0.1	0.893	0.60	1.160	1.36	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.