Associate Professor, Yale Statistics & Data Science. Social networks, social and behavioral data, causal inference, mountains. https://jugander.github.io/https://bsky.app/profile/jugander.bsky.socialhttps://bsky.app/profile/jugander.bsky.social/post/3mmc4cplwlk26A love letter to Deep Springs in today's NYT. Seems like a good time to mention: Stephanie and I are very excited to both be teaching short courses there next May-June ("Term 6", 2027). https://www.nytimes.com/2026/05/20/opinion/deep-springs-college-ivy-league-education.html?unlocked_article_code=1.j1A.LBM9.7Lj5CuK2_JKx&smid=url-share20 May 2026 14:25 +0000at://did:plc:bkivp3kl7muevev5higsf77q/app.bsky.feed.post/3mmc4cplwlk26https://bsky.app/profile/jugander.bsky.social/post/3mlganijjps2pA post from @wtgowers.bsky.social on math research with reasoning LLMs (e.g., ChatGPT 5.5-Pro). Having similar experiences and agree with his reflections. https://gowers.wordpress.com/2026/05/08/a-recent-experience-with-chatgpt-5-5-pro/09 May 2026 12:28 +0000at://did:plc:bkivp3kl7muevev5higsf77q/app.bsky.feed.post/3mlganijjps2phttps://bsky.app/profile/jugander.bsky.social/post/3mkxznzopuc22I'm at MIT tomorrow, Monday, giving the Sloan OM Seminar, 11:45a–1p. Talking about recent work on causal inference under "structured" interference w/ Kevin Han and Shuangning Li. MIT folks, come say hi!03 May 2026 20:46 +0000at://did:plc:bkivp3kl7muevev5higsf77q/app.bsky.feed.post/3mkxznzopuc22https://bsky.app/profile/jugander.bsky.social/post/3mjnyz4pst22oWas reminded of this one-page 1988 love letter to differential equations by @stevenstrogatz.com, and looked it up and re-read it. Such a gem. https://ai.stanford.edu/~rajatr/articles/SS_love_dEq.pdf17 Apr 2026 03:42 +0000at://did:plc:bkivp3kl7muevev5higsf77q/app.bsky.feed.post/3mjnyz4pst22ohttps://bsky.app/profile/jugander.bsky.social/post/3mjn2yw2lck2xPaper is full of great detailed examples of "shifting goalposts": [contains quote post or other embedded content]16 Apr 2026 18:45 +0000at://did:plc:bkivp3kl7muevev5higsf77q/app.bsky.feed.post/3mjn2yw2lck2xhttps://bsky.app/profile/jugander.bsky.social/post/3mhgcqijltc2yNeat new analysis of Transposition vs Move-to-Front self-organizing lists (as memoryless learning algos for rankings) by Christian Coester. Also cool (and in 2026, not surprising) that GPT 5 Pro helped a lot. See @sbubeck.bsky.social's recent post on X for process details. arxiv.org/abs/2603.10244 https://arxiv.org/abs/2603.1024419 Mar 2026 15:25 +0000at://did:plc:bkivp3kl7muevev5higsf77q/app.bsky.feed.post/3mhgcqijltc2yhttps://bsky.app/profile/jugander.bsky.social/post/3mh6p6nxszs2uGot baited by hopes of a "(small world) meets (world models)" essay, but was pleased to instead find a "it's all control theory (always has been)" essay. My father took classes from Åström in Lund in the 60s. He still came to dept fikas when I was a MS student in the 00s. Sharp, sharp man. [contains quote post or other embedded content]16 Mar 2026 14:46 +0000at://did:plc:bkivp3kl7muevev5higsf77q/app.bsky.feed.post/3mh6p6nxszs2u