Just took a bus around the North campus and even the dorms are sprawled in this area. Apartments are all maximum 2.5 floors high and more than half of the land is parking lots. Damn cursed.
07.12.2025 20:15 β π 1 π 0 π¬ 0 π 0@epigenci.bsky.social
PhD Student at UMich Statistics. The account mostly trashes about urban planning and infrastructure. Probability, Statistics, and Evolutionary Biology. https://hanbin973.github.io
Just took a bus around the North campus and even the dorms are sprawled in this area. Apartments are all maximum 2.5 floors high and more than half of the land is parking lots. Damn cursed.
07.12.2025 20:15 β π 1 π 0 π¬ 0 π 0I feel very stupid after searching "next letter of omega" on google. I badly needed something for an n-form :(
06.12.2025 22:31 β π 2 π 0 π¬ 0 π 0My experience in the US is that the lack of physical connectivity in many parts of the country, of which have been deliberately created over decades, considerably hampers the dissemination of modern policies. I wonder how the numbers look like after conditioning on rural vs suburb vs urban.
06.12.2025 15:59 β π 1 π 0 π¬ 0 π 0Another thing that bothers me is ergodicity. Distribution over one dimension (e.g. time) coincides with the distribution over another dimension (e.g. replicates) if certain conditions are met. Is this obscuring us from recognizing something important?
06.12.2025 15:55 β π 0 π 0 π¬ 0 π 0Am I a MAGA fan now?
05.12.2025 18:15 β π 1 π 0 π¬ 0 π 0And, do we even care about IQ? It is like the Impact Factor of intelligence...
04.12.2025 23:10 β π 25 π 7 π¬ 2 π 2www.biorxiv.org/content/10.6...
What surprised me is Figure 6 in which the distribution of the points looks very similar to what I've encountered in a very different setting. I wonder if this is some sort of a very general statistical phenomenon.
end of class! no more daily homeworks :)
04.12.2025 20:16 β π 3 π 0 π¬ 0 π 0Don't forget all these repulsive men who helped boost Jeffrey Epstein's reputation even after his horrific deeds were well known.
observer.co.uk/news/interna...
People like Martin Nowak, Steven Pinker, Alan Dershowitz, Larry Summers, Lawrence Krauss, et al
I wonder how administration and representation can be separated looking at gerrymendered maps.
03.12.2025 13:44 β π 0 π 0 π¬ 0 π 0New paper on minimal NNs for phylogenetic inference, with former grad student, Ben Rosenzweig:
arxiv.org/abs/2512.02223
I remember you asking about the purpose of omitting a information (here, location of materialized mutations). My tentative answer is that the we get a simpler model (no confounding) at a cost of perhaps lower precision (e.g prediction accuracy of BLUP) due to omitting information.
02.12.2025 19:40 β π 2 π 0 π¬ 0 π 0That was part of my convoluted thoughts. All, if not most, the papers making the claim that "GRM is enough" is marginalizing possible evolutionary paths, removing those non-direction flunctuations away from the model. This is obvious in our paper because mutations are treated as random.
02.12.2025 19:38 β π 2 π 0 π¬ 1 π 0It certainly depends on the model assumption. I have a few convoluted arguments in my mind, perhaps the most intuitive one will be that such a directional LD can't be there in the absence of selection.
02.12.2025 17:15 β π 1 π 0 π¬ 1 π 0The overall gaussian-ish assumption allows us to discard many of the higher-order terms and makes it clearer how these terms could be handled in more general cases.
02.12.2025 13:50 β π 2 π 0 π¬ 0 π 0I think I finally follow the parent-offspring regression shit. This sounds like conditioning on a pedigree, but it's in fact not because parents are being randomly selected. Hence, it's equivalent to forming an infinite gamete pool first and then forming a new individual out of it.
02.12.2025 13:48 β π 2 π 0 π¬ 1 π 0An interesting rabbit hole that I have yet dug into is that population structure alone cannot drive genetic variance inflation in the estimates. We did a spatial simulation exhibiting a very strong isolation-by-distance pattern. The estimated variance components are consistent.
02.12.2025 00:18 β π 4 π 1 π¬ 1 π 0Excited to share work from my postdoc with @docedge.bsky.social and collaborators Matt Pennell and @jgschraiber.bsky.social, newly out over the weekend: www.biorxiv.org/content/10.1... (1/6)
01.12.2025 19:09 β π 60 π 28 π¬ 2 π 2Depictions of evolution where a phylogeny often has humans on the far right or top can give an impression of evolution being progressive of leading to βincreased complexityβ when it does not. Top figure shows such a phylogeny which can look the same as βthe March of progressβ depiction most commonly used to depict evolution (showing monkey to man erroneous march of evolution) - instead swiveling some nodes on a phylogeny where humans are shown closer to the center (which doesnβt change relationships) can lead to better βtree thinkingβ
New post by me on #MITPressReader @mitpress.bsky.social
On the 100th anniversary of the #ScopesMonkeyTrial
the ways we depict #evolution can still give an erroneous progressive view (that evolution leads to humans or βincreased complexityβ).
thereader.mitpress.mit.edu/is-our-pictu...
I now automatically think of gerrymendering whenever I see decision boundaries.
01.12.2025 16:54 β π 1 π 0 π¬ 0 π 0λΉλμ£Όμμ ν΅κ³λ‘μ¨ μ 뒰ꡬκ°μ, λ΄κ° νλ λ°©λ²λ‘ μ μ λ’°μ±μ λλ¬λ΄λκ±°μ§ λ΄κ° ν λ² λ§λ€μ΄λΈ κ²°κ³Όκ°μ μ λ’°μ±μ λλ¬λ΄λκ² μλλ€. κ·Όλ° μλ§ λ² μ΄μ§μΈμ μΌλ‘ νμ ꡬκ°μΌλ‘ μ°μ°ν΄λ μ¬μ€μ λΉμ·ν λ²μκ° λμ€κΈ΄ν κΊΌλ€. λ¬΄μ¨ μ κ΅μ¬μ‘°μ μ κ΅ 1%p λ³λμ΄λ κ°λ³μ§μ, μ±μ°λ Ή μνλ‘ μ λ³λμ κ°κ³ μ° νΈλκ² μΌμμΈ λ³΄λ νμ, νλ³ΈνΈν₯ κ³ λ―Όνλ©° μ μ΄λ₯ νμ‘°μ¨μ κ°€λ½λ§νΌμ μ μ°κ³ μ μ€ν νννλ κ²λ§μΌλ‘λ κ°μ§λμ§νλ€. μ λ ₯μ΄ κ΄ν λμ€λκ² μλλ€.
01.12.2025 03:32 β π 2 π 2 π¬ 1 π 1We tried to make the paper more focused on variance component estimation and genetic prediction. Other points raised in the earlier paper will be discussed in future works.
30.11.2025 17:13 β π 2 π 0 π¬ 0 π 0www.biorxiv.org/content/10.1...
We finally submitted the earlier preprint to a journal after massive restructuring.
We've expanded the REML section for those interested in the method. We clarify that ARG-LMM estimates mutational variance and not additive variance.
Transit should be at forefront of any climate resiliency plan. Take snow. A bus is heavy and piloted by a trained driver; much safer in snow (or heavy rainfall) than the relatively light vehicles driven by civilians. Bus riders take vehicles off the streets, which speeds plowing, emergency response.
30.11.2025 15:08 β π 63 π 15 π¬ 1 π 2techbros everywhere lol
30.11.2025 13:46 β π 1 π 0 π¬ 0 π 0Curriculum shapes more than skills as taking STEM in high school boosts tech careersβbut also shifts politics as boys grow more conservative and girls more progressive, from Robert Ainsworth, Rajeev H. Dehejia, Andrei Munteanu, Cristian Pop-Eleches, and Miguel Urquiola www.nber.org/papers/w34502
27.11.2025 18:02 β π 13 π 9 π¬ 0 π 1www.biorxiv.org/content/10.1... looks useful?
30.11.2025 04:49 β π 0 π 0 π¬ 0 π 0pubmed.ncbi.nlm.nih.gov/41001573/
30.11.2025 03:20 β π 1 π 0 π¬ 0 π 0I got something to tell to my thesis committee member
29.11.2025 16:52 β π 1 π 0 π¬ 0 π 0