the last digit of a decade year
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. 9 of Qwen3-0.6B. Its strongest snippets are very consistent: they mostly peak on the same token. 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 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 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.
-
ten. The number 58⏎rounded to the nearest ten would be 60.⏎Look at the number on⏎each shell. Click
-
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
-
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
-
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
-
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
-
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
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: 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.
-
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
-
0101100.00010000.0yyyyyyy.yyyyyyyy => 172.16.0.0/17 SUBNET2 : 1010
-
0101100.00010001.0yyyyyyy.yyyyyyyy => 172.17.0.0/17⏎- We need a network with <|endoftext|>|Classification
-
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 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
- L4:498 suppresses
- L8:1297 excites
- L7:1808 weakly excites
- L6:2788 weakly excites
- L3:1876 weakly excites
- L6:1322 weakly excites the last digit of decade years
- L7:873 weakly suppresses
- L3:2097 weakly suppresses
- L4:2502 weakly excites
- L5:935 weakly suppresses
- L1:214 weakly suppresses
- L4:1518 weakly suppresses
- L2:1179 weakly suppresses
- L8:914 weakly excites
- L5:1693 weakly suppresses
- L5:1854 weakly excites
- L6:2696 weakly excites
- L7:2539 weakly excites
- L7:686 weakly excites
- L3:2239 weakly excites
- L6:560 weakly suppresses
- L4:2231 weakly suppresses
- L1:1928 weakly suppresses
- L2:1072 weakly suppresses
Feeds later layers
- L10:1141 suppresses zero digit inside a number
- L10:726 suppresses
- L11:2056 suppresses the digit zero inside numbers and times
- L11:871 suppresses zero and infinity as values
- L11:1515 suppresses
- L10:343 excites
- L25:3007 suppresses the zero digit in decimals
- L10:2491 suppresses
- L11:1852 suppresses the digit 1 in numbers
- L13:667 weakly suppresses zeros inside decimal numbers
- L10:715 weakly excites
- L23:1324 weakly suppresses
- L16:950 weakly suppresses
- L13:919 weakly suppresses
- L24:1676 weakly suppresses zeros in large round numbers
- L17:213 weakly suppresses
- L19:843 weakly suppresses
- L16:177 weakly suppresses zero digit inside dates and codes
- L18:1391 weakly suppresses
- L12:786 weakly suppresses
- L10:2023 weakly suppresses
- L12:1615 weakly suppresses
- L11:1653 weakly suppresses
- L12:2435 weakly suppresses
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
- orian
- fiber
- ories
- 翚
- Hur
- ody
- fib
- fibers
- 행
- 议
Suppresses
- 不住
- ernes
- OnInit
- 积累了
- _pdata
- 技术服务
- Growing
- PHPUnit
- 为目的
- Ṃ