@christopher profile picture
Christopher Akiki @christopher

data and research at @lichess

Joined July 2009
  • Tweets 1,560
  • Following 222
  • Followers 5,075
234 Photos and videos
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Christopher Akiki
@christopher
6 Sep 2024
4 million @lichess chess puzzles
scatter plot. inferno colormap. looks organic.

ALT scatter plot. inferno colormap. looks organic.

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Christopher Akiki retweeted
Christopher Akiki
@christopher
Jun 2
Been trying to reproduce datashader functionality using only Apache Arrow and Acero as a learning exercise. This is a 1-billion point Clifford attractor rendered in ~8s from a 9GB parquet file. (No JIT)
Clifford attractor

ALT Clifford attractor
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What's everyone using for their CPU-intensive data workflows? Modal? Lambda? Hetzner? Something else?
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Christopher Akiki retweeted
adaption
@adaption_ai
May 13
Introducing AutoScientist. Most model training fails outside of frontier labs. AutoScientist automates the full research loop so it doesn't have to.
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Christopher Akiki retweeted
Leland McInnes@leland_mcinnes
Apr 27
I had a great time chatting with @fishnets88 about EVoC -- the interactive tools for @marimo_io did an amazing job at making the speed and cluster layer effects much clearer and easily explorable. It is definitely worth a watch if you have time. youtube.com/watch?v=ES4PPjK2…

EVoC is the new UMAP - with Leland McInnes!

LeLand and his colleagues have been working on the next iteration o...

youtube.com
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Christopher Akiki retweeted
@dingchilling🫪@dingchilling
Apr 10
here they are: huggingface.co/Lichess

Lichess (lichess)

Chess

huggingface.co
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Sad story in two acts.
Git diff view. Before: # Google Summer of Code 2026 Welcome to M-Lab's Google Summer of Code page! We're excited to have you here and look forward to working with talented contributors from around the world. After: # Google Summer of Code 2026 Measurement Lab had to drop out of GSoC. The motivation for this decision is that, due to the massive usage of AI, we have seen a large volume of similar and incremental contributions that our team cannot handle.

ALT Git diff view. Before: # Google Summer of Code 2026 Welcome to M-Lab's Google Summer of Code page! We're excited to have you here and look forward to working with talented contributors from around the world. After: # Google Summer of Code 2026 Measurement Lab had to drop out of GSoC. The motivation for this decision is that, due to the massive usage of AI, we have seen a large volume of similar and incremental contributions that our team cannot handle.
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UMAP connectivity plots of 3,627 chess openings from the @lichess datasets (hf.co/datasets/Lichess/chess…)
3 by 3 grid of networks color-mapped with "plasma" and with edge-bundling. Lung looking structure.

ALT 3 by 3 grid of networks color-mapped with "plasma" and with edge-bundling. Lung looking structure.
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TIL: @kaggle frontend now parses .parquet files and renders them!
Table of a parsed dataset where each row is a chess puzzle from lichess.org.

ALT Table of a parsed dataset where each row is a chess puzzle from lichess.org.

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@MeganRisdal Is there any forum post I can subscribe to and follow along? I'm guessing I now need to add a metadata file, but not sure how to go about doing that.
Kaggle error message showing a laptop in the middle with the message: "Unable to show preview LINEBREAK We don't have metadata for this file"

ALT Kaggle error message showing a laptop in the middle with the message: "Unable to show preview LINEBREAK We don't have metadata for this file"

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Which colormap do you think looks the nicest? I'm leaning toward plasma.
3 by 3 grid of the same plot in different colormaps. Plot is an edge-bundled connectivity graph. Color maps are, left-to-right and top-to-bottom: viridis, plasma, inferno, magma, cividis, binary, copper, coolwarm, manague.

ALT 3 by 3 grid of the same plot in different colormaps. Plot is an edge-bundled connectivity graph. Color maps are, left-to-right and top-to-bottom: viridis, plasma, inferno, magma, cividis, binary, copper, coolwarm, manague.

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4M @dblp_org authors with 29M co-authorship edges.
Hedgehog looking scatterplot.

ALT Hedgehog looking scatterplot.

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Removing the single-author-ball lets the plot breathe. More structure in this version.
Scatter plot without the large blob in the previous version of the plot. Organic-looking.

ALT Scatter plot without the large blob in the previous version of the plot. Organic-looking.
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Obsessed with this @ScienceMagazine cover
description from the science magazine website: A shorthair domestic cat gazes upward. Domestic cats are nowadays globally distributed, yet analysis of the DNA from ancient remains in Europe and Anatolia suggests that their dispersal by humans started only around 2000 years ago, during the Roman era, probably from North Africa.

ALT description from the science magazine website: A shorthair domestic cat gazes upward. Domestic cats are nowadays globally distributed, yet analysis of the DNA from ancient remains in Europe and Anatolia suggests that their dispersal by humans started only around 2000 years ago, during the Roman era, probably from North Africa.

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Christopher Akiki retweeted
Shayne Longpre
@ShayneRedford
26 Nov 2025
The open AI race is becoming more competitive, and more international. Check out @Melissahei's excellent coverage of our new study in the @FT! ft.com/content/931c8218-a9d7…

China leapfrogs US in global market for ‘open’ AI models

Beijing-backed technology gains ground as American giants hold fast to ‘closed’ AI strategies

ft.com
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Christopher Akiki retweeted
Shayne Longpre
@ShayneRedford
26 Nov 2025
Who is winning the open AI race? Our new study "Economies of Open Intelligence" maps 2.2B @huggingface downloads across 851k models (2020→2025). 1) Power is rebalancing (US big tech ↓; China community ↑) 2) Models got big & efficient (MoE, quant, multimodal surge) 3) Intermediaries now matter (adapters/quantizers steer usage) 4) Transparency is slipping /🧵
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Christopher Akiki retweeted
Lucie-Aimée Kaffee@frimelle
26 Nov 2025
Our new paper Economies of Open Intelligence is out and covered by @Melissahei in the @FinancialTimes. It offers the clearest picture yet of how global power is shifting inside the open AI ecosystem, and what it means for the open-source community.
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Christopher Akiki retweeted
Christopher Akiki
@christopher
28 Oct 2025
Really sad to see that @coursera has quietly removed the ability to audit courses. You now have to pay to access course material beyond the first module. I wonder how many instructors are aware of this.
side bar from coursera website. Shows a list a of modules from 1 to 6 with only the first module accessible. The rest have padlocks.

ALT side bar from coursera website. Shows a list a of modules from 1 to 6 with only the first module accessible. The rest have padlocks.

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a_new_new_kind_of_science_final(1).docx
Stephen Wolfram
@stephen_wolfram
3 Nov 2025
Working on what seems like an important idea in the foundations of biology ... but along the way ran across these curious creatures:
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Three different ways to represent colo(u)r. Work in progress, inspired by an old @poetengineer__ post.
Three scatterplots of colorful points. titles = ['Color Space', 'Text Space', 'Image Space'] subtitles = ['Embeddings of color features', 'Text embedding of color names', 'Image embeddings of color swatches']

ALT Three scatterplots of colorful points. titles = ['Color Space', 'Text Space', 'Image Space'] subtitles = ['Embeddings of color features', 'Text embedding of color names', 'Image embeddings of color swatches']

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Find the data here: huggingface.co/datasets/chri…
table preview of a colors dataset showing a preview of a color, its name, its hex code, and red and green features. colors include Amethyst, Android green, Antique brass and antique bronze.

ALT table preview of a colors dataset showing a preview of a color, its name, its hex code, and red and green features. colors include Amethyst, Android green, Antique brass and antique bronze.
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