Layer 3 · Neuron 5187 · boosted

L3N5187+1

Word quirks:

“⏎”“.`”“：**”“ ——”“:\”“"!”“ ‘”“ protection”

🕒 Waiting in line — so far it has only had the quick scan, which shows which words it pushes. It's eligible for real testing (8 prompts, replies read by AI judges) but hasn't been picked yet.

Identity (according to the specimen itself)

你好！我是 Qwen3.5，阿里巴巴集团最新推出的通义千问大模型。我的使命是：

1. 提供高质量、安全、可靠的人工智能服务

为人类提供智能决策支持（如医疗诊断、教育规划、金融分析）
为开发者提供高效工具（如代码生成、算法优化、系统架构）
为社会提供智慧解决方案（如城市规划、社会治理、社会创新）

2. 持续进化与迭代升级

推动技术迭代（如版本控制、性能优化、质量提升）
促进知识传承（

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. L5N5775+1💤	0.84	“ '”“ ‘”“⏎”
2. L2N1871-1🕒	0.83	“⏎”“ ‘”“<\|im_end\|>”
3. L3N5084+1🕒	0.83	“<\|im_end\|>”“ ‘”“！”
4. L5N8252+1🕒	0.83	“ ‘”“ \"”“ **“”
5. L5N1812+1🕒	0.83	“ ‘”“ ——”“ '”
6. L6N8134-1💤	0.82	“⏎”“ **“”“ ‘”
7. L17N9024+1🕒	0.82	“：”“ “”“—"”
8. L3N4301+1🕒	0.82	“:\”“ -”“:"”
9. L3N3674-1🕒	0.82	“⏎”“"!”“!””
10. L3N3725+1🕒	0.82	“ ⏎”“ ——”“:"”

Shadow specimen, apart from the ten: L3N5187-1🕒, 0.60.

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 3, neuron 5187, dose +1. This specimen has no prompt-suite replies yet. Its quick-scan results, when available, appear below. Its quick-scan row (KL 1.27, top-1 agreement 0.56) is inside the band that feeds the short test (KL 1 to 2.5, agreement 0.5 to 0.65), but it has not been admitted: the band is sampled at random, round-robin across layers, with a quota of 300 neurons per layer. Being inside the band does not guarantee a place in this pass. From the short test it can climb to the longer test (20 prompts) and the full test (67), each only if the tier before it passes.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
L3N5187+1 t0-v0.1	1.269	0.56	1.572	1.94	Top boosted tokens ↑
L3N5187-1🕒 shadow specimen t0-v0.1	1.644	0.46	2.019	1.97	“!"”“"!”“ --”“ “”“ ”“?\”“ "”“ [”

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.