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ghkbrew

438 karma · joined April 4, 2014

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ghkbrew··on F3
For columnar data storage I think. The description references Parquet and they appear to benchmark against Parquet, Vortex, and Lance.
ghkbrew··on Softmax, can you derive the Jacobian? And should you care?
Sounds like they're saying that since the distribution doesn't come from measuring or calculating the probability of something, it has the form of a probability distribution but isn't really one. Like saying 5 feet is a height that a person can have, but since I just made up that number it's not actually a person's height.
ghkbrew··on OpenAI has deleted the word 'safely' from its mission
[Citation Needed]
ghkbrew··on The super-slow conversion of the U.S. to metric (2025)
Only if you're made of pure water at standard pressure. Which I'm not.
ghkbrew··on MIT study finds AI can replace 11.7% of U.S. workforce
This title is clickbait.

From the abstract: "The Index captures technical exposure, where AI can perform occupational tasks, not displacement outcomes or adoption timelines." (emphasis mine)

The 11.7% figures is the modeled reduction in "wage value", which appears to be marketplace value of (human) work.

ghkbrew··on Common yeast can survive Martian conditions
I think they prefer "Jovians".
ghkbrew··on The Bitter Lesson Is Misunderstood
Well no actually it'd still clear to me that they mean the the multiplication of 3 different variables X, N, and D.

I don't think of it as eliding obvious operators. Rather in mathematics juxtaposition is used as an operator to represent multiplication. You would never elide an addition operator.

So X next to D still means multiplication as long as you can tell that X and D are separate entities.

I would wonder why they switched conventions in the middle of an expression though.

ghkbrew··on The Bitter Lesson Is Misunderstood
I assume they use N⋅D rather than ND to make it explicit these are 2 different variables. That's not necessary for 6N because variable names don't start with a number by convention.
ghkbrew··on Eels are fish
I regret to report that there is surely no such thing as a fish.[0]

[0] https://quoteinvestigator.com/2024/12/04/no-fish/

ghkbrew··on Replacing tmux in my dev workflow
Mosh looks very cool, though I've never used it. Does Screen provide some advantage over tmux in this setup?
ghkbrew··on NIST ion clock sets new record for most accurate clock
My calculations says that moving 1cm up or down earths gravity well (at the surface) changes the acceleration of gravity about 5x more than the acceleration you'd feel from a 100kg mass 1m away.

Assuming my math is correct, it's already affected by nearby human scale masses, for certain values of "near".

ghkbrew··on CU Randomness Beacon
From tfa:

Often, randomness is thought of as something you want to keep hidden, such as when generating passwords or cryptographic keys. However, there are many applications where an independent and public source of randomness is useful. For example, randomizing public audits, selecting candidates for jury duty, or fairly assigning resources through a lottery.

ghkbrew··on P-Hacking in Startups
The chance that a positive result is a false positive depends on the false positive rate of your test and on total population statistics.

E.g. imagine your test has a 5% false positive rate for a disease only 1 in 1 million people has. If you test 1 million people you expect 50,000 false positive and 1 true positive. So the chance that one of those positive results is a false positive is 50,000/50,001, not 5/100.

Using a p-value threshold of 0.05 similar to saying: I'm going to use a test that will call a false result positive 5% of the time.

The author said: chance that a positive result is a false positive == the false positive rate.

ghkbrew··on WebGL Water (2010)
Here I am running just fine on a 3 year old phone
ghkbrew··on Java's SimpleDateFormat: YYYY vs. Yyyy
Why does YYYY exist? Is there some common need I'm not familiar with?

Also, I clicked on the title because I wanted to know what format Yyyy was... I feel mislead.

ghkbrew··on In 1870, Lord Rayleigh used oil and water to calculate the size of molecules
The second is (and has been) defined independent of length for a while. It's the time it takes for a certain number oscillations of a caesium atom.

The meter was redefined as the distance light travels in a specific time. So you could say that either the meter or the speed of light was redefined to make the speed of light a round constant, but not the second.

ghkbrew··on Picking Glibc Versions at Runtime
> Doesn't that mean you need all the app's library dependencies installed into your alternate libdirs that you bind mount over top the "real" libdirs? Not just the ones you want to override?

You can also create a temp directory with symlinks as a poor mans overlay fs. You bind mount the original dir in an out of the way location so you can link to it and bind the temp dir over the standard location.

I believe thats what Nix's bubblewrap based FHSenv was doing last I checked.

ghkbrew··on Scale of the Universe
We (the humans) would fit into Texas regardless of whether the land we owned would ;-)
ghkbrew··on HIV in cell culture can be completely eliminated using CRISPR-Cas gene editing [pdf]
According to your link, both of those are applied to extracted stem cells which are then reintroduced. The ability to perform clonal expansion and DNA sequencing makes it possible that screening for off-target edits could be performed. Though I have no idea if it's actually done.
ghkbrew··on On Proprioception, the Sixth Sense of Storytelling (2022)
Not really. You actually have a unique set of sensory neurons that tell you the spacial orientation of your body by measuring muscle/ligament stretch: https://en.m.wikipedia.org/wiki/Proprioception

Edit: yes your general "body sense" is intergrated over multiple senses, including sight, touch, inner ear, ... but my point is that proprioception is an independent signal in that mix.

ghkbrew··on YouTube blames ad blockers for slow load times, not the browser
Don't be ridiculous, Vine Is Not an Emulator
ghkbrew··on LAPD considering stronger body camera policy in light of recent scandals
Sure, then they're left with a pretty incriminating pattern of behavior when someone objects to the officers behavior during that traffic stop.
ghkbrew··on Oldsmobile Hydra-Matic Drive (1947) [pdf]
TIL what the first line of "Greased Lightning" means.
ghkbrew··on The strange disappearance of Mrs Agatha Christie (2022)
Chemistry is physics.
ghkbrew··on What if OpenDocument used SQLite? (2014)
Then you proactively prevent changes. Either "open a copy" or "open in readonly mode".

If you make saving the default you have to manually not save. It's a trade off versus default no saves with manual saves

ghkbrew··on What is wrong with TOML? (2019)
How is this meaningfully different than using Javascript?
ghkbrew··on Proofs based on diagonalization help reveal the limits of algorithms
Imagine you have an code which does #2. Now give it itself as an argument. What is the result? If it emits 0 then it's behaving according to #1, then because we assumed it satisfies #2 it must emit 1, a contradiction. Similarly it can't emit 1.

Thus it is impossible to have an algorithm which solves #2 for all inputs, because it must fail on at least one input (itself)

ghkbrew··on Following pushback, Zoom says it won't use customer data to train AI models
e2e means/implies that only the endpoints (i.e. the users) get to see the unencrypted signal. If Zoom truely uses e2e encryption no trainable data would exist on their servers. Of course, they control the endpoint software too so they could make it do whatever they want realistically.
ghkbrew··on Qalculate – A multi-purpose cross-platform desktop calculator
Thanks, I'll stick with Rstudio.
ghkbrew··on Sci-fi becomes real as renowned magazine closes submissions due to AI writers
Yes, but it but humans have been afraid that machines would replace them since long before Frank Herbert wrote about it. For example: https://en.m.wikipedia.org/wiki/Luddite
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