LLMs are semantic memory. Good job. Now build the other parts of cognitive systems.
Readit NewsSubiculumCode commented on AGI is an engineering problem, not a model training problem vincirufus.com/posts/agi-... · Posted by u/vincirufus
I just needed to stop and say: as a biostatistician, boy do I love a beautiful complex longitudinal design: I remember my old professor asking us how at this point we would decompose into cross-sectional and longitudinal effects, Lord's paradox, etc... and I still don't fully understand Lord's paradox as well as I should.
And thank you for the reminder of Lord's paradox. I should refresh myself.
I just needed to stop and say: as a biostatistician, boy do I love a beautiful complex longitudinal design: I remember my old professor asking us how at this point we would decompose into cross-sectional and longitudinal effects, Lord's paradox, etc... and I still don't fully understand Lord's paradox as well as I should.
This is a very important idea. For example, one issue with accelerated longitudinal designs, see image [1], is that while they efficiently cover a larger age range, the fixed effects of age are largely driven by cross-sectional differences between who is samples are younger and older ages. One method that can be used to test whether the pattern seen in the fixed effects represents the pattern within subjects is to decompose within and between effects of age. For example, you can create a non-time-varying variable like age at first visit (starting_age), and then a within subject variable change in age since first visit, which would be zero at the first visit (age1-age1=0, age2-age1 for change of age between visit 2 and visit 1, age3-age1, for change in age between 3rd visit and first visit), calling it dage. Then in the mixed model, test for an interaction between starting_age:dage. If you have an interaction, then you know that the within subject effect of change in age is different depending on how old you were when you started.
I got this from Lesa Hoffman's freely available lectures [2], particularly [3][4], and now I discovered she recently published [5], which I should read.
[1] https://e-m-mccormick.github.io/static/longitudinal-primer/l... [2] https://www.lesahoffman.com/ [3] https://www.lesahoffman.com/PSYC944/944_Lecture11_Alt_Time.p... [4] https://www.lesahoffman.com/Workshops/SMiP_Presentation_June... [5] https://www.tandfonline.com/doi/full/10.1080/00273171.2025.2...
Sure ggplot, for example, is finicky, and you need to fuss over it to get the look you are wanting, but then again, it is very flexible. Most of these solutions get frustrating as soon as you want to do, for example, spaghetti plots of within subject repeated measures using age (not time-point) of accelerated longitudinal design data, with fixed effect plots on top. e.g. this plot of mine [1]
[1] https://imgur.com/a/gw2vV7w
SubiculumCode commented on How much do electric car batteries degrade? sustainabilitybynumbers.c... · Posted by u/xnx
Great post. Minor quibble: the data shows fast DC charging does not have a material impact on battery pack health longevity.
TLDR These batteries are going to outlast the vehicle chassis.
Full Speed Ahead: EV Study Reveals Impacts of Fast Charging - https://news.ycombinator.com/item?id=37330024 - August 2023
My other quibble is when the author says the majority of cars are scrapped at 150k-200k..if this excludes wrecked vehicles, I suspect most are sold to used markets, even foreign used markets, not scrapped.
SubiculumCode commented on Claude says “You're absolutely right!” about everything github.com/anthropics/cla... · Posted by u/pr337h4m
I've spent a lot of time trying to get LLM to generate things in a specific way, the biggest take away I have is, if you tell it "don't do xyz" it will always have in the back of its mind "do xyz" and any chance it gets it will take to "do xyz"
When working on art projects, my trick is to specifically give all feedback constructively, carefully avoiding framing things in terms of the inverse or parts to remove.
'not X' just becomes 'X', as our memories fade..I wouldn't be surprised the context degradation is similar in LLMs.
SubiculumCode commented on Show HN: Move to dodge the bullets. How long can you survive? dodge.trickle.host... · Posted by u/samdychen
Playing on Firefox Android. Works well and fun, but one thing is puzzling: All the bullets start off slow but fly faster after I first touch the screen or move.
SubiculumCode commented on Administration seeking $1B settlement from UCLA cnn.com/2025/08/08/politi... · Posted by u/SubiculumCode
The suspension of grants is not the DOJ. It is the DOE for violations of Title 9.
Then why is the resumption of those grants tied to it?
SubiculumCode commented on Administration seeking $1B settlement from UCLA cnn.com/2025/08/08/politi... · Posted by u/SubiculumCode
The suspension of grants is not the DOJ. It is the DOE for violations of Title 9.
How is the suspension of a research grant even related to a violation of title 9? It's bullshit, and everyone knows it, because it is actually extortionistic bullshit.
SubiculumCode commented on Administration seeking $1B settlement from UCLA cnn.com/2025/08/08/politi... · Posted by u/SubiculumCode
That's why it's a settlement offer, not a judgement. If they think they're innocent, they can go through discovery and go to trial.
But for the same reason Columbia settled: they know they broke the law. They used protected characteristics in hiring decisions.
And the suspension of grants?
And is settlement offers even legal in this context?