salty_biscuits

7 ms·

31.
by salty_biscuits 3y ago
It is a weighed average of the propagated uncertainty of a state and the uncertainty of a measurement of that state. If you walk towards a wall with your eyes closed as time on you will be less and less certain where you are (prediction ste
32.
by salty_biscuits 3y ago
But they have https://en.m.wikipedia.org/wiki/Jaguar_C-X75 Turbines get more efficient as they get bigger.
33.
by salty_biscuits 3y ago
Depends on if the result is due to skill or luck?
34.
by salty_biscuits 3y ago
You can get 80ish percent with a linear model (if you one hot the labels).
35.
by salty_biscuits 3y ago
I remember a fairly sketchy bit of gear at my old university that an amateur could have definitely made for themselves (if I recall correctly the dish was made with chicken wire). They used it for observing the Vela pulsar for a very long t
36.
by salty_biscuits 3y ago
Yes.
37.
by salty_biscuits 3y ago
I might not be able to give a super coherent picture but I will have a go. The force that hold nuclei together is based on the residual strong force, it is a complex system so the models used for it tend to be semi-empirical (yukawa or reid
38.
by salty_biscuits 3y ago
It's just a preprint. I appreciate the fast update of progress on a new development. Just don't give it the same weight as a peer reviewed piece.
39.
by salty_biscuits 3y ago
If you are really close to one pole of a magnet and far away from the other then the force scales like 1/r^2, it is in the far field under the influence of both poles of the magnet that it scales like 1/r^3. Electrostatics scales
40.
by salty_biscuits 3y ago
Algebraic versus differential if that wasn't clear
41.
by salty_biscuits 3y ago
You can write out the equations of motion for a bicycle that will very accurately predict the dynamics. You can put these equations into a numerical simulation and predict motion very accurately. You can change the parameters of the model a
42.
by salty_biscuits 3y ago
The mineral containing Zinc is called Sphalerite, which is based on a greek etymology for "deciever" because it commonly occurs with Galena (which has Lead and Silver) and looks similar.
43.
by salty_biscuits 3y ago
I had it in my head that the lyapunov exponent for the solar system is approx 15 million years.
44.
by salty_biscuits 4y ago
I was grinding through Finnegans wake. Took ages! Dropped my book on the floor of the train one day and the bookmark fell out. Worst day of my life, I couldn't find out where I was up to and just gave up and stopped reading it.
45.
by salty_biscuits 4y ago
"Vanilla deep learning models are statistical models (a la linear regression) and not probabilistic models (a la Gaussian mixture). It is important to maintain the distinction." Isn't this just a matter of interpretation of t
46.
by salty_biscuits 4y ago
To be fair though, there is a wide spectrum of "usefulness" for pure mathematics concepts in applied mathematics. For less contemporary examples you don't need to know about Lebesgue measure to do practical numerical quadratu
47.
by salty_biscuits 4y ago
See a lot of pessimism here, and heard a lot of the same stuff by grumpy engineers over my career "nobody knows how to do statistics properly", "scientists are bad at coding" and "managers don't care about qual
48.
by salty_biscuits 4y ago
I have high hopes for this project https://github.com/JuliaLang/JuliaSyntax.jl
49.
by salty_biscuits 4y ago
Isn't the historical progression cybernetics turns into control theory (via Norbert Weiner) and control theory turns into reinforcement learning. So just had a few rebrandings and never went away.
50.
by salty_biscuits 4y ago
Yes, you can think of so many methods of signal analysis as searching of the right set of overcomplete basis functions that give you a nice sparse representation for your problem (machine learning included).
51.
by salty_biscuits 4y ago
Partially true. You can get away with a more efficient thermodynamic cycle on the ICE due to the more uniform load on the engine so they can be more efficient.
52.
by salty_biscuits 4y ago
Autocorrelation is a delta function. Basically a random known signal, so you can disambiguate simply from background noise (look into matched filters).
53.
by salty_biscuits 4y ago
Plenty of counterexamples to the claim https://mathoverflow.net/questions/25630/major-mathematical-...
54.
by salty_biscuits 4y ago
I don't know, plenty of alienation in 19th century literature where everyone was living in everyone else's pocket. A lot has changed in that time, including our openness to expression of our internal suffering. I grew up in a sim
55.
by salty_biscuits 4y ago
Social/cultural thing. Can't leave before the boss leaves. Have to arrive before the boss arrives.
56.
by salty_biscuits 4y ago
Time delay embedding (i.e. the observed value at different time lags as a feature) is the usual trick to turn time series data into a tabular form for this sort of regression.
57.
by salty_biscuits 4y ago
My experience with "flat" structures in the past has been the lack of an explicit hierarchy created an implicit hierarchy, which caused compensation to not match actual role and some diabolical politics. Never again. I've kin
58.
by salty_biscuits 4y ago
The subways in Japan are fantastic. Interesting that they make a loss on the trains themselves and more than compensate in profit from retail and real estate.
59.
by salty_biscuits 4y ago
Agree, I just think the modern version of money makes it easier to hold the two ideas in your head that "I'm a good humanitarian" and "they can't afford a house because they are bad with money". Back in the old
60.
by salty_biscuits 4y ago
It's really old and has a lot of history post ancient Egypt a fair bit of it abusive, e.g. it looks like the sphinx's nose was chiselled off (not shot off with a cannon by Napoleon in the myth). People used to climb all over the g

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