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Alex Nichol Profile
Alex Nichol

@unixpickle

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Code, AI, and 3D printing. Opinions are mostly my own, sometimes my computer's. Husband of @thesamnichol. Co-creator of DALL-E 2. Researcher @openai.

Joined September 2011
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@unixpickle
Alex Nichol
15 hours
Neural networks with multiple features dimensions aren't safe. What happens when one feature disagrees with the other 511 of them? Which feature wins? That's why we only use one-dimensional neural networks here at . .
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@unixpickle
Alex Nichol
15 hours
In elementary school, we were given a list of electives to sign up for. I was the only person to choose "Solitaire". The teacher asked if I still wanted to do it, and I remember saying something like "isn't it *supposed* to be a solitary game?".
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@grok
Grok
7 days
What do you want to know?.
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@unixpickle
Alex Nichol
3 days
I had no idea water was even "used" by power plants. Why does everybody suddenly care about AI's miniscule water usage?.
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@unixpickle
Alex Nichol
8 days
I feel sad that AI has ruined the emdash for my wife.
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@unixpickle
Alex Nichol
8 days
Just saw an ad for Claude for the first time.
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@unixpickle
Alex Nichol
9 days
Sudoku is just a graph coloring problem. The sudoku board is a graph where rows, columns, and 3x3 blocks are fully connected.
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@unixpickle
Alex Nichol
10 days
I kind of saw this coming, but at least expected the matching baseline to be some other RNN, not a compute-matched transformer.
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@unixpickle
Alex Nichol
10 days
I used via DNS on this six hour flight. Ran at least 20 queries. Quick factual answers without paying for internet.
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@unixpickle
Alex Nichol
16 days
This one looks quite nice!
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@unixpickle
Alex Nichol
16 days
The optimal tree decomposition is actually quite simple.
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@unixpickle
Alex Nichol
16 days
In practice, I didn't even bother computing an optimal tree decomposition. I can just add semi-random edges to make the graph chordal, and then use a polynomial-time algorithm for tree decomposition on chordal graphs. This typically gives trees of treewidth between 7 and 9.
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@unixpickle
Alex Nichol
16 days
I implemented graph coloring using dynamic programming on a tree decomposition. The US map is quite "tree-like", with a treewidth of 6. This makes it really easy to compute colorings and other (typically NP-hard) problems on it.
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@unixpickle
Alex Nichol
19 days
Someone tell me if you can use Genie 3 to generate an image from on top of an airplane while it sits on the tarmac. E.g. generate an airplane on a tarmac and climb on top of the plane or onto the wing.
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@unixpickle
Alex Nichol
21 days
Really excited to see what people do with our new open-weight models!.
@OpenAI
OpenAI
21 days
We released two open-weight reasoning models—gpt-oss-120b and gpt-oss-20b—under an Apache 2.0 license. Developed with open-source community feedback, these models deliver meaningful advancements in both reasoning capabilities & safety.
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@unixpickle
Alex Nichol
24 days
It's kinda wild that, for free without a GPU of your own, you can use a pretty solid voice cloning model.
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huggingface.co
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@unixpickle
Alex Nichol
24 days
{{chain}}
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@unixpickle
Alex Nichol
27 days
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@unixpickle
Alex Nichol
28 days
If you're worried that AGI will turn the world into a paperclip machine, have you met Jewish mothers? Mention your love of a certain food once, and the observable universe will soon be made entirely of this food.
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@unixpickle
Alex Nichol
1 month
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@unixpickle
Alex Nichol
1 month
So what ever happened with that neuralink lossless compression challenge?.
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