Neuron Explorer

Qwen3-0.6B

the '0' in years like 2008

A neuron in layer 23 of Qwen3-0.6B. Its strongest snippets are very consistent: they mostly peak on the same token. It is featured, so it has steering outputs.

What this neuron does

This neuron lights up on the zero in years that start with 20, such as 2004 or 2013. It goes quiet or negative on the 1 in years like 1889 or 1939. Turning it down made the model output strings of repeated 9s and 7s, and turning it up made the text wordier but did not clearly change its subject.

Written by Claude from this neuron's activations and steering outputs. Confidence: medium. 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

    environmental factors. Doctors have known about hoarding for centuries, although the disorder was only formally recognized by the psychiatric community as a distinct psychiatric illness in 2013. Perhaps the most famous person who had a hoarding disorder was Howard

  2. #2 peak

    BLS report released in 2011. So women earned 81 cents of every dollar earned by men, which has been typical since 2004.⏎What’s the difference? Unlike the measure of annual wages by the

  3. #3 peak

    the United States.⏎Medical Record Technician Career History⏎Medical practitioners have been recording information about their patients’ illnesses and treatments for hundreds of years. Before the 20th and 21st

  4. #4 peak

    prices and marginal speculation in food have done the same.⏎2011 also saw the highest average oil prices since 2008, at $94.81 per barrel. That is not

  5. #5 peak

    downloaded for free at www.archenergy.com/SPOT/index.html.<|endoftext|>Since the Supreme Court recognized an individual’s right to keep and bear arms in 2008 — but declined to say which types of arms — several lower courts have

  6. #6 peak

    president of the United States.⏎Minus the federal benefits, licenses for same-sex marriage were introduced. Same-sex marriage was officially legalized within the United States in 2015.⏎Serving in a presidency of exactly sixteen years, she also remains

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: the97697777777777777777777777777777777777777777777

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

    booth has become something of a novelty. But grownups can’t be bothered.⏎The first public coin-operated pay phone appeared in Hartford, Conn., in 1889. The first phone booth debuted in the early 190

  2. #2 peak

    Inmarsat is a British company that provides telephony and data services to users worldwide. The company has developed a series of networks since it was founded in 1979. The withdrawal of RBGAN occurred because it was superseded by

  3. #3 peak

    the crystals were pure protein, and assembled by autocatalysis⏎) were incorrect. The first electron microscopical images of TMV were made in 1939 by Gustav Kausche, Edgar Pfankuch and Hel

  4. #4 peak

    has been used for the elimination of diseases in certain plants.⏎Tissue Culture History⏎The first person to attempt cell culture was G. Haberlandt in 1902. He was unsuccessful, but hypothesized that hormones were necessary for

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. L21:1815 strongly excites
  2. L18:2542 excites
  3. L20:1396 excites
  4. L21:2497 suppresses
  5. L20:1520 excites
  6. L18:2103 suppresses
  7. L20:2625 excites
  8. L6:248 excites
  9. L20:642 weakly suppresses
  10. L6:13 weakly excites
  11. L14:1700 weakly excites
  12. L20:1355 weakly suppresses
  13. L8:457 weakly excites year digits in copyright and dates
  14. L11:2530 weakly excites
  15. L20:1020 weakly suppresses
  16. L21:741 weakly suppresses
  17. L22:332 weakly suppresses
  18. L19:2444 weakly excites
  19. L21:2903 weakly suppresses
  20. L17:2799 weakly suppresses
  21. L16:2242 weakly suppresses
  22. L0:121 weakly excites
  23. L6:932 weakly excites
  24. L6:2202 weakly suppresses

Feeds later layers

  1. L26:905 strongly suppresses
  2. L27:494 strongly excites
  3. L25:147 suppresses
  4. L27:893 suppresses
  5. L25:322 suppresses
  6. L27:205 excites
  7. L27:1087 suppresses
  8. L25:333 suppresses
  9. L26:976 suppresses the '1' starting a century
  10. L25:2314 suppresses the 1 starting a 1900s year
  11. L27:294 suppresses
  12. L27:1100 suppresses
  13. L25:2383 suppresses
  14. L27:785 excites
  15. L25:342 excites
  16. L25:58 weakly excites colon in clock times
  17. L27:132 weakly excites
  18. L24:453 weakly excites
  19. L27:1389 weakly suppresses
  20. L25:2029 weakly suppresses
  21. L26:880 weakly suppresses
  22. L26:898 weakly suppresses
  23. L24:1199 weakly suppresses
  24. L25:1087 weakly suppresses word right before a number value

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 -114.75 and -110.331 values between -97.05 and -92.631 values between -79.36 and -74.931 values between -70.51 and -66.083 values between -61.66 and -57.241 values between -57.24 and -52.811 values between -52.81 and -48.391 values between -48.39 and -43.961 values between -35.11 and -30.692 values between -26.27 and -21.841 values between -21.84 and -17.423 values between -17.42 and -12.993 values between -12.99 and -8.578 values between -8.57 and -4.153554 values between -4.15 and 0.28297 values between 0.28 and 4.7012 values between 4.70 and 9.135 values between 9.13 and 13.551 values between 17.98 and 22.404 values between 22.40 and 26.832 values between 26.83 and 31.251 values between 35.67 and 40.101 values between 40.10 and 44.522 values between 48.95 and 53.371 values between 57.80 and 62.22offnegativepositiveoften

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. ADER
  2. amus
  3. 部长
  4. 占有
  5. 鳍
  6. 热水器
  7. ivalence
  8. dating
  9. 陵
  10. Whatsapp

Suppresses

  1. 9
  2. 九
  3. ninety
  4. 9
  5. nine
  6. Nine
  7. -nine
  8. 8
  9. 九十
  10. ninth