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Christopher Akiki

@cakiki.bsky.social
1.3K followers 74 following 63 posts

data and research at @lichess.org

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Reposted by Christopher Akiki
Marco @mcognetta.bsky.social · 30/09/2026
🚨 [Token][ization] Paper Alert 🚨 Tokenization is a wildly understudied area of language modeling despite it having effects across all of NLP. Over the past ~8 months, 32 (!) tokenizer researchers put together the most comprehensive survey of the field. Check it out!
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Reposted by Christopher Akiki
Lichess @lichess.org · 20/07/2026
Were you watching the World Cup or playing chess? Well, we have the stats for it... (1/2)
A visible dip in a line chart of online users for the World Cup Final, and temporary rebound during the halftime show
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Christopher Akiki @cakiki.bsky.social · 17/07/2026
t-SNE on SigLIP embeddings of 1,360 @oreilly.bsky.social book cover animals. The penguin cluster is my favorite.
t-SNE plot of animal engravings.
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Christopher Akiki @cakiki.bsky.social · 15/07/2026
Maybe also something for the discord: discord.gg/lichess
discord.gg
Join the lichess.org Discord Server!
Official Discord of lichess.org, the free chess server. No paywall, no tracking, no ads. Just the good stuff. | 49306 members
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Christopher Akiki @cakiki.bsky.social · 14/07/2026
Light mode is the way
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Christopher Akiki @cakiki.bsky.social · 14/07/2026
This version has 1360 @oreilly.bsky.social book covers, sorted by color.
image quilt of all o'reilly media books, sorted by hue.
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Christopher Akiki @cakiki.bsky.social · 11/07/2026
Image quilt of all @oreilly.bsky.social animals.
small multiple photo of 1360 oreilly animals
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Christopher Akiki @cakiki.bsky.social · 04/07/2026
Fun looking UMAP tomfoolery.
UMAP plot
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Christopher Akiki @cakiki.bsky.social · 26/06/2026
What would that entail in practice?
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Reposted by Christopher Akiki
Lichess @lichess.org · 26/06/2026
We recently crossed 6 million chess puzzles in our open database. Like the platform itself, Lichess data is free and open source. Go and build something cool with it, Available wherever you get your datasets!
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Christopher Akiki @cakiki.bsky.social · 22/06/2026
work in progress: 1 million synthetic personas from NVIDIA's Nemotron-Personas-USA dataset.
scatter plot of 1 million personas from https://huggingface.co/datasets/nvidia/Nemotron-Personas-USA
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Christopher Akiki @cakiki.bsky.social · 04/06/2026
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
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Reposted by Christopher Akiki
Marco @mcognetta.bsky.social · 11/02/2026
I'm looking for 5-10 #chess players to test out a tool I'm building. Preferably who play on @lichess.org and are 1200+ in rapid or blitz. And if you coach chess at all, I'd be extra grateful to have you test it! NOTE: it is _NOT_ an "LLM chess coach" tool, I promise! 🙏
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Christopher Akiki @cakiki.bsky.social · 09/02/2026
Ah very cool! Any chance you can share the code for that?
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Christopher Akiki @cakiki.bsky.social · 09/02/2026
This absolutely phenomenal. What framework did you use for the frontend? cc @lelandmcinnes.bsky.social
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Reposted by Christopher Akiki
Lichess @lichess.org · 07/02/2026
Any chess position with 8 pieces on the board and at least one pair of opposed pawns has been solved! Lichess can now tell you definitively if it's a win, loss or draw with no engine required. Read about the massive technological undertaking to accomplish this partial 8 piece tablebase on our blog:
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Christopher Akiki @cakiki.bsky.social · 07/02/2026
github.com/cakiki/chess... In case you want to play with the files, I made this kaitai parser for the op1 format.
github.com
chess-file-formats/tablebases/op1 at main · cakiki/chess-file-formats
Parsing utilities for binary chess file and database formats - cakiki/chess-file-formats
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Christopher Akiki @cakiki.bsky.social · 31/01/2026
Looking forward to your course on there!
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Christopher Akiki @cakiki.bsky.social · 23/01/2026
They're parameter sweeps of the UMAP algorithm, varying the number of neighbors (rows) and the spread of the data (columns).
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Christopher Akiki @cakiki.bsky.social · 20/01/2026
UMAP connectivity plots of 3,627 chess openings from the @lichess.org datasets (huggingface.co/datasets/Lic...)
3 by 3 grid of networks color-mapped with "plasma" and with edge-bundling. Lung looking structure.
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Christopher Akiki @cakiki.bsky.social · 18/01/2026
I think you'll appreciate it's actually chess opening positions from @lichess.org : huggingface.co/datasets/Lic...
huggingface.co
Lichess/chess-openings · Datasets at Hugging Face
We’re on a journey to advance and democratize artificial intelligence through open source and open science.
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Christopher Akiki @cakiki.bsky.social · 18/01/2026
ncf.idallen.com/english.html
ncf.idallen.com
The Chaos - Gerard Nolst Trenité
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Christopher Akiki @cakiki.bsky.social · 18/01/2026
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, managua.
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Christopher Akiki @cakiki.bsky.social · 16/01/2026
I'm not 100% sure if DBLP (dblp.org) indexes non-English venues, but the plot itself is only authors, not papers.
dblp.org
dblp: computer science bibliography
The dblp computer science bibliography is the online reference for open bibliographic information on major computer science journals and proceedings.
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Christopher Akiki @cakiki.bsky.social · 16/01/2026
Scatterplot of 4 million computer science authors, laid out according to co-authorship connections. Large blob in the bottom left are all single authors; removing them lets the plot breathe more somehow. The source of the data is the @dblp.org bibliography.
Organic looking scatterplot. Blob in the bottom left. Hedgehog looking.Organic looking scatterplot. Sort of looks like Romanesco broccoli.
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Reposted by Christopher Akiki
Shayne Longpre @shaynelongpre.bsky.social · 26/11/2025
Who is winning the open AI race? Our new study Economies of Open Intelligence maps @hf.co 851k models' downloads 2020→2025. 1) Power rebalance: US tech ↓; China + community ↑ 2) Models size & efficient ↑ (MoE, quant, multimodal) 3) Intermediary layers ↑ (adapters/quantizers) 4) Transparency ↓ /🧵
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Reposted by Christopher Akiki
Lichess @lichess.org · 11/11/2025
Researchers at Google DeepMind used our free puzzle database and reinforcement learning to train a model to generate creative chess puzzles. ➡️ Read more on this by Tom Zahavy from the DeepMind discovery team: lichess.org/@/tomas135/b...
lichess.org
AI-Generated Chess Puzzles
A new research by the Discovery team at @GoogleDeepMind using RL and generative models to discover creative chess puzzles
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Christopher Akiki @cakiki.bsky.social · 04/11/2025
Find the data here: huggingface.co/datasets/chr...
huggingface.co
christopher/wikipedia-colors · Datasets at Hugging Face
We’re on a journey to advance and democratize artificial intelligence through open source and open science.
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Christopher Akiki @cakiki.bsky.social · 04/11/2025
Three different ways to represent colo(u)r. Work in progress, inspired by an old post by Kat Zhang / The Poet Engineer.
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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Christopher Akiki @cakiki.bsky.social · 31/10/2025
- Dataset: huggingface.co/datasets/Hug... - Embeddings: huggingface.co/datasets/air... (H/T @loubnabnl.hf.co for recommending this)
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Christopher Akiki @cakiki.bsky.social · 31/10/2025
- Sasha's talk: ted.com/talks/sasha_... - Tools: datamapplot and EVōC by @lelandmcinnes.bsky.social and colleagues at the Tutte Institute and openTSNE by @pavlinpolicar.bsky.social
ted.com
We’re doing AI all wrong. Here’s how to get it right
Artificial intelligence is changing everything — but at what cost? AI sustainability expert Sasha Luccioni exposes how tech companies' massive data centers are burning through energy and wrecking the ...
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Christopher Akiki @cakiki.bsky.social · 31/10/2025
I made this annotated scatter plot of 1 million FineWeb-Edu documents for @sashamtl.bsky.social's new TED talk.
Scatterplot of a document corpus with cluster information in the form of colors and cluster labels. Includes labels like computing, mental health, religion, etc.
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Reposted by Christopher Akiki
Xiaoyi @cleefouti.bsky.social · 28/10/2025
When the fish left the river:
A four frame comic about the Cambodian genocide. In the first frame, a man can be seen from the back, looking at a window. The text reads: "I never ask my father about Cambodia." In the second frame, a silhouette of the father can be seen, screaming in his sleep, arms reaching into nothingness. The text reads: "What could he say, really, that he didn't already scream in his nightmares?". The third frame shows the father pondering on something, expression neutral. The text reads: But sometimes he would say "It's funny, when it happened, all the fish left the river. They never came back." . The fourth frame shows the father lowering his head, thinking. He says: "I guess they knew."The second page of the comic on the Cambodian genocide, and everything to come. The first frame shows the daughter, young, silent and unsure of what to say. The text reads: "I didn't say anything then." In the present, the daughter, now an adult, looks at the Seine in Paris. The text reads "But I often think of it now.". The daughter then crouches near the Seine to see if there are any fish left. She says: "Are you still here?".
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Christopher Akiki @cakiki.bsky.social · 27/10/2025
Also really love how organic the plot looks with "inferno" (left) and "viridis" (right).
organic looking network representing the internet BGP nodes. Inferno colormap.organic looking network representing the internet BGP nodes. Viridis colormap.
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Christopher Akiki @cakiki.bsky.social · 26/10/2025
Update: the color map in this post is misleading. See the quoted post for context. bsky.app/profile/caki...
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Christopher Akiki @cakiki.bsky.social · 26/10/2025
Thanks to @jamesabednar.bsky.social I realized I had used the wrong background color for the colormap I had chosen. This is another version of the plot (different embeddings) with the corrected background.
Correct version of the plot in the quoted post. Graph with an organic like structure of the BGP network.
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Christopher Akiki @cakiki.bsky.social · 26/10/2025
Glad you like it! Nothing yet, only a very messy jupyter notebook for now. I will share the code and data pipelines once they're all cleaned up.
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Christopher Akiki @cakiki.bsky.social · 26/10/2025
Huge props to @lelandmcinnes.bsky.social for optimizing the hammer bundling code in datashader and to Barrett Lyon's inspring work at the Opte Project.
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Christopher Akiki @cakiki.bsky.social · 26/10/2025
Map of the internet: 1.3M nodes (BGP)
organic looking graph of the BGP nodes of the internet. black and white
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Christopher Akiki @cakiki.bsky.social · 14/10/2025
"Allô maman bobo" is another poignant classic. www.youtube.com/watch?v=AgdU...
youtube.com
Allô maman bobo
YouTube video by Alain Souchon - Topic
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Reposted by Christopher Akiki
Lichess @lichess.org · 07/10/2025
We're cooking.. 👀
Photo of three hard disk drives.
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Christopher Akiki @cakiki.bsky.social · 28/09/2025
526.9 million player deaths in 24.7 million levels of Super Mario Maker 2. Data by @tgr.bsky.social
very colorful scatterplot of player deaths in mario maker levels. "inferno" colormap. some level elements highlighted.
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Christopher Akiki @cakiki.bsky.social · 21/07/2025
Such a cutie! 🥺
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Christopher Akiki @cakiki.bsky.social · 11/07/2025
- repo: github.com/apple/embedd... - live demo: apple.github.io/embedding-at...
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Christopher Akiki @cakiki.bsky.social · 11/07/2025
Really cool new embeddings exploration tool by @domoritz.de and colleagues from Apple. Can't wait to build with this. Also includes a streamlit component and a Jupyter widget.
screenshot from the embeddings atlas repoexample density plot exploring a wine dataset.
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Christopher Akiki @cakiki.bsky.social · 04/06/2025
Would you happen to have your university lectures on OT anywhere online?
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Christopher Akiki @cakiki.bsky.social · 06/03/2025
We are grateful for your sacrifice 🫡
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Christopher Akiki @cakiki.bsky.social · 28/02/2025
Licensing is weird though, they say it's GPL but also include this: "To use the compiled binaries, you must own the game".
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Christopher Akiki @cakiki.bsky.social · 28/02/2025
Woah! EA just open sourced "Command and Conquer: Red Alert" and a bunch of other CnC games! github.com/electronicar...
box art from 1996 version of CNC RED ALERT
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