Christian Ray

@jcjray.bsky.social

Conceptual biology. Multiomics, information, and manifold learning. Ex-academic. Also here for LOLs, pols, and geometric varietals. DAW jockey and 1.5/10 guitarist. I like trains. I obviously do not speak for or on behalf of my employer.

Jon Ossoff tells Lawrence O’Donnell: “It’s been amazing to watch this White House melt down over this all week. And about Natalie Harp, these White House staffers are adults — public officials, paid by the taxpayer, with immense power in positions of public trust… No one cares about their feelings.”

As promised yesterday, a short thread on an inequality I believe deserves to be much better-known: a chain-rule-type for Hellinger distance! You have two probability distributions p,q over product space Ω₁×...×Ωₙ. Can you relate their distance H(p,q) to the distances between their marginals? 1/

The dream inequality (false): overall Hellinger is at most sum of Hellinger between marginals

Sometimes I see something in nature and then spend the next several years waiting for the shot. Sometimes I never get it. Sometimes you see it and a week later you land it: I give you tonight's murder of crows in front of the sunset. 🪶

Paul Morris Mary Erdoes Jes Staley Stephen Cutler John Duffy Justin Nelson Paul Barrett Mary Casey David Brigstocke Jeff Matusow Jane Heller Karen Weiss Stewart Oldfield