Neuron Explorer

Qwen3-0.6B

the last digit of a decade year

A neuron in layer 9 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 final zero in decade years like 1950s, 1970s or 1980s, where the year is written with its last digit split off. Turning it up made the model write about unrelated things, so the steering does not show this pattern.

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

    ten. The number 58⏎rounded to the nearest ten would be 60.⏎Look at the number on⏎each shell. Click

  2. #2 peak

    11Vegetarian Diets lower blood pressure for Children . 12 An impressive number of studies, dating back to the early 1920s, show that veg-<|endoftext|>If you take a walk through the Salt Lake

  3. #3 peak

    lags behind the industry high of 55 million boxes, reached in the mid 1990's. However, according to Ocean Spray's Grapefruit Juice Marketing Manager Dan Th

  4. #4 peak

    late 19th century. The site was excavated by the American Foundation for the Study of Man (AFSM) in the early 1950s and by the Italian Mission to Oman (IMTO) since 19

  5. #5 peak

    Over the ensuing years the technology was improved and refined until it became more widely used in hospitals across the country, and indeed globally, in the 1970s.⏎Today, regular scans are a standard part of the care for all pregnant

  6. #6 peak

    to be admitted to a prestigious university to get the online courses.⏎North Korea appears to be in roughly the same position as China in the mid-1980s, when China created the Chinese Central Television and Radio University, which is now

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: Why did I do it? So, I will do my best to try and see if my answer is correct. Let the answer is 100% correct. (Okay, I will try to check the answer and then see if

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

    eaten between 6:30am and 7:30am and often consists of rice or soup. Lunch is generally eaten between 12:00noon and 1:00pm. Many people eat out, grabbing

  2. #2 peak

    0101100.00010000.0yyyyyyy.yyyyyyyy => 172.16.0.0/17 SUBNET2 : 1010

  3. #3 peak

    0101100.00010001.0yyyyyyy.yyyyyyyy => 172.17.0.0/17⏎- We need a network with <|endoftext|>|Classification

  4. #4 peak

    second number is always lower than the first one. No number will begin with zero.⏎For each expression, print two lines with two given numbers, the second number

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. L4:498 suppresses
  2. L8:1297 excites
  3. L7:1808 weakly excites
  4. L6:2788 weakly excites
  5. L3:1876 weakly excites
  6. L6:1322 weakly excites the last digit of decade years
  7. L7:873 weakly suppresses
  8. L3:2097 weakly suppresses
  9. L4:2502 weakly excites
  10. L5:935 weakly suppresses
  11. L1:214 weakly suppresses
  12. L4:1518 weakly suppresses
  13. L2:1179 weakly suppresses
  14. L8:914 weakly excites
  15. L5:1693 weakly suppresses
  16. L5:1854 weakly excites
  17. L6:2696 weakly excites
  18. L7:2539 weakly excites
  19. L7:686 weakly excites
  20. L3:2239 weakly excites
  21. L6:560 weakly suppresses
  22. L4:2231 weakly suppresses
  23. L1:1928 weakly suppresses
  24. L2:1072 weakly suppresses

Feeds later layers

  1. L10:1141 suppresses zero digit inside a number
  2. L10:726 suppresses
  3. L11:2056 suppresses the digit zero inside numbers and times
  4. L11:871 suppresses zero and infinity as values
  5. L11:1515 suppresses
  6. L10:343 excites
  7. L25:3007 suppresses the zero digit in decimals
  8. L10:2491 suppresses
  9. L11:1852 suppresses the digit 1 in numbers
  10. L13:667 weakly suppresses zeros inside decimal numbers
  11. L10:715 weakly excites
  12. L23:1324 weakly suppresses
  13. L16:950 weakly suppresses
  14. L13:919 weakly suppresses
  15. L24:1676 weakly suppresses zeros in large round numbers
  16. L17:213 weakly suppresses
  17. L19:843 weakly suppresses
  18. L16:177 weakly suppresses zero digit inside dates and codes
  19. L18:1391 weakly suppresses
  20. L12:786 weakly suppresses
  21. L10:2023 weakly suppresses
  22. L12:1615 weakly suppresses
  23. L11:1653 weakly suppresses
  24. L12:2435 weakly suppresses

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 -6.44 and -6.141 values between -1.74 and -1.451 values between -1.45 and -1.151 values between -1.15 and -0.865 values between -0.86 and -0.5648 values between -0.56 and -0.271688 values between -0.27 and 0.022035 values between 0.02 and 0.32117 values between 0.32 and 0.616 values between 0.61 and 0.903 values between 0.90 and 1.201 values between 1.79 and 2.081 values between 5.02 and 5.31offnegativepositiveoften

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. orian
  2. fiber
  3. ories
  4. 翚
  5. Hur
  6. ody
  7. fib
  8. fibers
  9. 행
  10. 议

Suppresses

  1. 不住
  2. ernes
  3. OnInit
  4. 积累了
  5. _pdata
  6. 技术服务
  7. Growing
  8. PHPUnit
  9. 为目的
  10. Ṃ