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Visualizing 13M Bluesky users
million BlueSky users Anyone who uses Twitter a lot knows that it's a big place. Not just that it has a lot of active users, but more that there are lots of different parts.
Over time, everybody develops their own mental map of the landscape, infering how vast and foreign the whole network is from hints and clues, stray tweets escaping containment, and chance encounters in a big account's replies. BlueSky is growing quickly, but at the time of writing, it recently passed 13 million users, and the follows table had a little over half a billion rows, which was only around 30 GB on disk. I found that this highlights more local struture than PCA, smoothly transitions in the embedding dimension, and gives the map a soothing, dappled, stained-glass texture up-close.
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