mturmon

11 ms·

91.
by mturmon 2y ago
> …not worth arguing against misinformed comments … Yeah, I have these same response patterns. Shell works really well for some use cases. I generally don’t respond to the comments that list the various “footguns” of shell, or that compl
92.
by mturmon 2y ago
The image filename contains SWIR which is a clue. Several instruments can sense emissions in short-wave IR which light up for fires (and hot smoke plumes, and some industrial plants). E.g., VIIRS which is a successor to MODIS ( https:/
93.
by mturmon 2y ago
You’re correct. The lab management sent out a message to this effect mid-day Wednesday. Many public-facing servers were taken down purposely due to the fires. Part of the lab HPC was also powered down, not sure what its status is now. The h
94.
by mturmon 2y ago
> … we keep crowding in what seem to the worst places to live … Malibu? Pacific Palisades? These are among the most pleasant places in the world to live. People are not going to stop wanting to live there — this isn’t a lost cause like
95.
by mturmon 2y ago
Some harrowing before and after photos from a Maxar instrument via LA Times (may be pay walled): https://www.latimes.com/california/story/2025-01-08/shocking... This shows Altadena, just east of JPL, and Mali
96.
by mturmon 2y ago
This is consistent with what I know. I did not need the full API for my use case, just access to planet positions across times in the next few decades. It is Dmitry Savransky who recommended your package, btw.
97.
by mturmon 2y ago
> used by a ton of missions and spacecraft for determining sun up/down times, pointing angles for heavenly bodies, time and precise keeping, etc etc. Yes. My use case was/is determining pointing angles between a telescope at L2
98.
by mturmon 2y ago
This group at JPL is the canonical source for solar system ephemeris, including planets and small bodies. The underlying models are numerically integrated equations of motion that I’m sure include all kinds of corrections, especially for bo
99.
by mturmon 2y ago
Related: A python package for atmospheric correction of imaging spectroscopy (“hyperspectral”) radiance data: https://github.com/isofit/isofit And a superset package, for the EMIT imaging spectroscopy investigation: h
100.
by mturmon 2y ago
Just another comment that this small, niche museum is worth a visit. I’ve been twice, once when visiting Ft. Meade on business and once when passing through DC. The thing that impressed me is the typewriter-size Enigma machines of legend, a
101.
by mturmon 2y ago
“an explanation for MLE” I used to get by on, “it’s the parameters that make the data most likely”, like it says on the name. I think that’s what you are after. Then I took a stats class, and I know to say, “the MLE is minimum variance with
102.
by mturmon 2y ago
The notion of “completing the square” is often done as an algebraic trick (“just add and subtract this magic term”). But it can also be viewed as translating the quadratic expression along the “X-axis” so that (at its new origin) it is left
103.
by mturmon 2y ago
oops, I realize I completely mis-stated the second point. What it should say is: - If delta(x) is OK, why is delta^2(x) not OK?
104.
by mturmon 2y ago
I've stopped myself just in time from triggering my Sawstop while using an aluminum miter gauge. The scenario is that the gauge was set with reasonable (1cm) clearance at one angle, and then I changed the angle without re-checking the
105.
by mturmon 2y ago
I hear you, and I admit I'm drawing a fuzzy line (is the conventional approach “rigorous”). Here are two “test functions”- - we learned much about impulse responses, and sometimes considered responses to dipoles, etc. However, if I rea
106.
by mturmon 2y ago
I really appreciated this piece. Thank you to OP for writing and submitting it. The thing that piqued my interest was the side remark that the Dirac delta is a “distribution“, and that this is an unfortunate name clash with the same concept
107.
by mturmon 2y ago
Since you’re asking, $@ is the “target” of the build, that is, what you are aiming to build (left of the colon in the rule). This is why it looks like a bullseye. And $< is of course the thing the target depends on. It’s the input, like
108.
by mturmon 2y ago
Thank you for the link. Yeah, what we are doing now in ML isn’t really “engineering” in the best sense of the word. We don’t have a theoretical machinery that can predict performance of ML designs. (Like the way you can for a coding scheme
109.
by mturmon 2y ago
I think OP just kind of enjoys these little simulations. It’s rewarding (to some) to see mathematical predictions actually work out. As a probability nerd myself, I was yelling at my browser for him to take the difference between the true C
110.
by mturmon 2y ago
Related to your question, but not responsive to the “speed” aspect: Here is a nice article from Ars [1] on the impact of starship on large space telescopes. This is focused on Webb successors (which in NASA fall under astrophysics, not pl
111.
by mturmon 2y ago
Those classrooms! Exactly.
112.
by mturmon 2y ago
The front matter in Vladimir Vapnik’s book “Statistical Learning Theory” (first edition published 1995) has this quote: * During the last few years at various computer science conferences, I heard reiteration of the following claim: “Comple
113.
by mturmon 2y ago
Something like the stray palm trees in the background of ads and shows that are supposed to take place in the US Midwest. I know where you really are!
114.
by mturmon 2y ago
I agree with you, and wish this perspective had informed many of the comments nearby. I'm commenting because my own kid went through the LAUSD highly gifted (HG) magnet program -- which is a subset of the "gifted" program --
115.
by mturmon 2y ago
As you mention, the leftmost image (the red "photogram" intending to show intensity) is filtered. I'm writing mostly to amplify your comment because I spent some years working with these images. People may not be aware how st
116.
by mturmon 2y ago
This is what I learned as the “theory of types” from Cover and Thomas, chapter 11, from original work by Imre Csiszar. See just under “theorem 6” in https://web.stanford.edu/class/ee376a/files/2017-18/lec
117.
by mturmon 2y ago
This question is very important for planetary science. Magnetometers are our main tool for detecting presence of a saline ocean in planets and moons (Enceladus, Triton, Europa), and characterizing it. The Uranus measurement is a template fo
118.
by mturmon 2y ago
Two ways to compute the determinant: 1) product of eigenvalues 2) cofactor expansion (e.g., https://textbooks.math.gatech.edu/ila/determinants-cofactors... ) The second is the one I was taught first, in the context of l
119.
by mturmon 2y ago
In a footnote OP says: > I’m not yet good enough to intuitively get why the curvature of the probability-generating would be related to variance, but I’d be happy to receive pointers here. Here’s my intuition for this. The characteristic
120.
by mturmon 2y ago
I’m saying that the hat is a pretty clear declaration. But I’m not saying just what role he might find tempting. Focusing on the particular role is a red herring. There are lots of opportunities for disruptive people with big plans who don

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