In the metric-learn package, all algorithms currently implemented learn so-called Mahalanobis distances.
Looks like for metric learning, it’s Mahalanobis or bust.
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The curious case of the gravitational constant
This is a story that came up at Hack 6. I couldn’t remember if it had also come up at Hacks prior or I had found it through some other means. See also:... Adobe Photoshop 1.0 is source available (it's written in Pascal!)
Hacker News discussion GitHub mirror of source code I mentioned this to a couple of you recently. I incorrectly believed that the source code release was recent. It actually happened 11 years ago! Reading through the code, I was surprised by how "modern" Pascal seemed.... The
algorithm
is extremely simple at the moment:activity = voteCount + (10 * numComments)
then there are thresholds for how many bars to show.