multiplication and scaling in math
A neuronOne of thousands of tiny dials inside each layer. It reads the text so far and produces a number, its activation, that nudges what the model writes next. in layerOne step in the stack the text passes through. Qwen3-0.6B has 28 layers, each with 3,072 neurons. 4 of Qwen3-0.6B. Its strongest snippets are mixed: they peak on different tokens. It is featuredA neuron picked for the full treatment: steering outputs and a written explanation. About 3,000 of the 86,000 neurons are featured., so it has steering outputs.
What this neuron does
This neuron responds to math text where a number is multiplied or scaled, such as 'times 5', 'x 100', or 'multiplied by 2 raised to'. It goes strongly negative on the 'log' in decibel formulas. Turning it up made the model's writing repetitive and did not produce clear math.
Written by Claude from this neuron's activations and steering outputs. Confidence: low. Think it is wrong? Flag it (opens a prefilled issue on GitHub).
Fires most on
The text windows where this neuron's activationThe number a neuron produces for a token. Large positive means it fired hard; negative means it pushed the other way. was highest. Amber marks positive activation; the outlined tokenA piece of text the model reads at once: often a word, sometimes part of a word or a punctuation mark. is the peak. Hover a token for its strength.
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5x dx,⏎- but we know how to solve that. We can multiply by 5 and divide by 5.⏎- 1/5 times 5 is just going to be 1. So we haven't changed the value
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2.4 \times 100 \div 3.2$.⏎You could, of course
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int exp);⏎float ldexpf(float x, int exp);⏎long double ldexpl(long double x, int exp);⏎These functions computes the quantity x * 2exp.⏎Upon successful completion, these functions return x multiplied by 2 raised to
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( 15 pF or 33 pF ) may be selected.⏎The tree positions of
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Gradient descent takes small steps to reduce the loss of a model. Gradient descent algorithms multiply the gradient by a scalar known as the learning rate (also sometimes called step size) to determine the next point. For example, if the gradient magnitude is
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is selective (varying through the spectrum). The distortions magnify the original factor 1 + d / to a factor that approaches 1 + 3d / . More precisely, the photographic magnitudes, to use the technical measure of
SteeringAdding a push along a neuron while the model writes, to see how its output changes. Turning it up or down.
Push this neuron up or down while the model writes, and watch what changes. The outputs were generated ahead of time, so nothing runs in your browser.
Here is something I have been thinking about lately: how to the 3rd root of 2 of 2... So, that's the inverse of the square root of two, and so the inverse of the square root of 2, and so the inverse of the square root of
Most negative on
Where the activation went furthest below zero. Blue marks negative activation. Many neurons mean something different in each direction.
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be MAX.⏎Express the PSNR in decibels. From Step 1, we have the decibel value LdB as LdB = 10 log10 (P1/P0). Now let P1 = MAX^2
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the probability is about cxn, where c = (10/9)2 ≈ 1.2 and x = (9/10)log102 ≈ 0.97. The expected number of powers
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are in the same units of measure. The decibel is 0.1 bel, so the decibel value LdB is LdB = 10 log10 (P1/P0).⏎Define the mean squared error (MSE
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10 log10(MAX^2/MSE) = 10 log10(MAX/(MSE)^(1/2))^2 = 2
Connections
Show on mapWhich neuronsOne of thousands of tiny dials inside each layer. It reads the text so far and produces a number, its activation, that nudges what the model writes next. in earlier layersOne step in the stack the text passes through. Qwen3-0.6B has 28 layers, each with 3,072 neurons. feed this one, and which later ones it feeds. Amber links excite, blue links suppress; longer bars are stronger.
Fed by earlier layers
- L3:52 suppresses
- L3:703 suppresses
- L3:105 excites
- L3:1010 suppresses "to" in "click here to"
- L3:165 suppresses
- L3:322 excites
- L3:567 suppresses
- L3:536 weakly suppresses
- L3:838 weakly suppresses
- L3:560 weakly suppresses
- L3:56 weakly excites
- L3:628 weakly suppresses
- L1:2654 weakly excites
- L3:278 weakly excites
- L0:1390 weakly suppresses
- L2:1657 weakly excites
- L1:623 weakly excites "and" in noun lists, "through" in ranges
- L3:540 weakly suppresses
- L3:354 weakly suppresses
- L3:1312 weakly suppresses
- L1:91 weakly suppresses
- L0:539 weakly excites
- L3:421 weakly suppresses
- L3:974 weakly suppresses
Feeds later layers
- L6:939 suppresses
- L16:871 suppresses
- L6:323 suppresses
- L5:314 suppresses
- L5:41 excites
- L16:785 suppresses
- L7:1136 suppresses
- L13:1833 suppresses
- L5:115 weakly suppresses
- L6:420 weakly suppresses
- L23:1707 weakly suppresses
- L16:1827 weakly suppresses
- L5:860 weakly suppresses
- L5:2079 weakly suppresses
- L14:967 weakly suppresses
- L5:2765 weakly suppresses
- L20:894 weakly suppresses
- L5:12 weakly suppresses
- L8:1867 weakly excites immediately repeated words
- L23:2459 weakly suppresses
- L5:503 weakly suppresses
- L7:1541 weakly excites
- L15:1589 weakly suppresses
- L20:2946 weakly excites
Activation histogramA chart of how often a neuron takes each activation value.
How often this neuron fires at each strength. Almost always it does close to nothing (the tall bars in the middle); the snippets above are the rare moments it fired hard, amber for positive and blue for negative.
Logit lensReading which output tokens a neuron pushes toward or away from, straight off its output weights, before the later layers have their say.
The words this neuron nudges the model toward (amber) or away from (blue) when it fires. A hint, not a label: many neurons work through later layersOne step in the stack the text passes through. Qwen3-0.6B has 28 layers, each with 3,072 neurons. instead.
Promotes
- ��
- rest
- oref
- RefreshLayout
- typings
- chema
- kb
- ramework
- typingsJapgolly
- tb
Suppresses
- 招
- imuth
- Annunci
- 朋友
- хозяй
- ilyn
- vertising
- repid
- ecal
- ellt