Neuron Explorer

Qwen3-0.6B

multiplication and scaling in math

A neuron in layer 4 of Qwen3-0.6B. Its strongest snippets are mixed: they peak on different tokens. It is 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 activation was highest. Amber marks positive activation; the outlined token is the peak. Hover a token for its strength.

  1. #1 peak

    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

  2. #2 peak

    2.4 \times 100 \div 3.2$.⏎You could, of course

  3. #3 peak

    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

  4. #4 peak

    ( 15 pF or 33 pF ) may be selected.⏎The tree positions of

  5. #5 peak

    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

  6. #6 peak

    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

Steering

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.

turned down a lot
Prompt

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.

  1. #1 peak

    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

  2. #2 peak

    the probability is about cxn, where c = (10/9)2 ≈ 1.2 and x = (9/10)log102 ≈ 0.97. The expected number of powers

  3. #3 peak

    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

  4. #4 peak

    10 log10(MAX^2/MSE) = 10 log10(MAX/(MSE)^(1/2))^2 = 2

Connections

Show on map

Which neurons in earlier layers feed this one, and which later ones it feeds. Amber links excite, blue links suppress; longer bars are stronger.

Fed by earlier layers

  1. L3:52 suppresses
  2. L3:703 suppresses
  3. L3:105 excites
  4. L3:1010 suppresses "to" in "click here to"
  5. L3:165 suppresses
  6. L3:322 excites
  7. L3:567 suppresses
  8. L3:536 weakly suppresses
  9. L3:838 weakly suppresses
  10. L3:560 weakly suppresses
  11. L3:56 weakly excites
  12. L3:628 weakly suppresses
  13. L1:2654 weakly excites
  14. L3:278 weakly excites
  15. L0:1390 weakly suppresses
  16. L2:1657 weakly excites
  17. L1:623 weakly excites "and" in noun lists, "through" in ranges
  18. L3:540 weakly suppresses
  19. L3:354 weakly suppresses
  20. L3:1312 weakly suppresses
  21. L1:91 weakly suppresses
  22. L0:539 weakly excites
  23. L3:421 weakly suppresses
  24. L3:974 weakly suppresses

Feeds later layers

  1. L6:939 suppresses
  2. L16:871 suppresses
  3. L6:323 suppresses
  4. L5:314 suppresses
  5. L5:41 excites
  6. L16:785 suppresses
  7. L7:1136 suppresses
  8. L13:1833 suppresses
  9. L5:115 weakly suppresses
  10. L6:420 weakly suppresses
  11. L23:1707 weakly suppresses
  12. L16:1827 weakly suppresses
  13. L5:860 weakly suppresses
  14. L5:2079 weakly suppresses
  15. L14:967 weakly suppresses
  16. L5:2765 weakly suppresses
  17. L20:894 weakly suppresses
  18. L5:12 weakly suppresses
  19. L8:1867 weakly excites immediately repeated words
  20. L23:2459 weakly suppresses
  21. L5:503 weakly suppresses
  22. L7:1541 weakly excites
  23. L15:1589 weakly suppresses
  24. L20:2946 weakly excites

Activation histogram

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.

1 values between -0.98 and -0.951 values between -0.54 and -0.501 values between -0.46 and -0.423 values between -0.42 and -0.399 values between -0.39 and -0.357 values between -0.35 and -0.315 values between -0.31 and -0.2719 values between -0.27 and -0.2425 values between -0.24 and -0.2046 values between -0.20 and -0.16102 values between -0.16 and -0.12171 values between -0.12 and -0.09275 values between -0.09 and -0.05445 values between -0.05 and -0.01643 values between -0.01 and 0.03610 values between 0.03 and 0.06531 values between 0.06 and 0.10391 values between 0.10 and 0.14243 values between 0.14 and 0.17160 values between 0.17 and 0.2184 values between 0.21 and 0.2569 values between 0.25 and 0.2932 values between 0.29 and 0.3220 values between 0.32 and 0.365 values between 0.36 and 0.406 values between 0.40 and 0.441 values between 0.44 and 0.473 values between 0.47 and 0.51offnegativepositiveoften

Logit lens

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 layers instead.

Promotes

  1. ��
  2. rest
  3. oref
  4. RefreshLayout
  5. typings
  6. chema
  7. kb
  8. ramework
  9. typingsJapgolly
  10. tb

Suppresses

  1. 招
  2. imuth
  3. Annunci
  4. 朋友
  5. хозяй
  6. ilyn
  7. vertising
  8. repid
  9. ecal
  10. ellt