cshimmin

18 ms·

151.
by cshimmin 5y ago
It's a degree of freedom of the learnable model. For example in a "vanilla" neural network layer (MLP), which maps from M to N feature dimensions will contain an MxN matrix of learnable parameters that model the connections b
152.
by cshimmin 5y ago
Yeah, similar "thematic" naming to MacOS versions. I don't know why the original one was called Gopher, though.
153.
by cshimmin 5y ago
No, there is no coordinate system. This is referring to the distribution of a test statistic for hypothesis testing. It's a 1-d real scalar, and coordinate transforms don't have any meaningful statistical representation. Of course
154.
by cshimmin 5y ago
It is just a convention, specifically for interpreting and presenting experimental results. We also use sigma to represent standard deviation in other contexts, of course. Sometimes it represents Pauli spinor matrices. Sometimes it's a
155.
by cshimmin 5y ago
For what it's worth, sigma is chosen for this purpose specifically to evoke the notion of "standard deviations". But quoting the std dev. directly is useless, since the distribution is unspecified. So we "convert" t
156.
by cshimmin 5y ago
I work in this field (different experiment); despite the downvotes this is a reasonable question. Reposting my comment from above, since there is confusion here (the other sibling comments are incorrect). In particle physics, sigma denotes
157.
by cshimmin 5y ago
Basically, the result of an experiment has to be boiled down to a single numerical value, called the test-statistic. Typically the test-statistic is a (log) likelihood ratio. It is the distribution of the t.s. that must be considered when d
158.
by cshimmin 5y ago
I work in this field (different experiment); that's not really true. In particle physics, sigma denotes "significance", not standard deviation. Technically what we're quoting as "sigmas" are "z-values&quot
159.
by cshimmin 5y ago
As another ATLAS physicist, I can say that this is an excellent article from Prof. Schott. He is very politely arguing that "someone messed up". I'm not sure I agree so much with the point of combining the LEP experiments, wh
160.
by cshimmin 5y ago
Indeed, IIRC some of the members of the collaboration even opted to have their name omitted from the author list.
161.
by cshimmin 5y ago
At the end of the article: "Oh, I almost forgot, those are the actual buds in the header picture at the top of the page, and they are already functional. The unicorn is real too. "
162.
by cshimmin 5y ago
Good question; had to go to the supplementary materials of the paper in Science [1]. It is called a Bragg Mirror [2], which basically seems like a special coating consisting of layers of alternating refractive index. I don't know the d
163.
by cshimmin 5y ago
I believe the whole community is an ad for YCombinator ;)
164.
by cshimmin 5y ago
Well, in the mathematical sense that's not true. The Gomboc is defined as a homogeneous solid object with one stable equilibrium.
165.
by cshimmin 5y ago
I would think the print layer resolution would spoil the effect since it would produce non-convex regions and extra equilibrium points. It could be smoothed by post-processing, but presumably polishing/sanding would get you into the sa
166.
by cshimmin 5y ago
Interesting, I've never heard Type IV before. I've always heard the more succinct definition: Type I -- fun now, fun later, Type II -- not fun now, fun later, Type III -- not fun now, not fun ever. But now that you mention it, the
167.
by cshimmin 5y ago
Seems like it could be useful for radio-sensitive instrumentation, such as a GHz telescope array.
168.
by cshimmin 5y ago
Yeah, clicking this link on my 2016 MPB caused all of Chrome to completely hang for about 3mins until I could close it... yikes.
169.
by cshimmin 5y ago
In scientific notation (orders of magnitude is what matters here): 1.700e3 rounded -> 2e3 1.660e3 rounded -> 2e3 Put another way: if your bill for lunch is $16.60, wouldn't you just as easily call it $17? Or even $20, if you&#x27
170.
by cshimmin 5y ago
From the press release: "up to 40 of the satellites will reenter or already have reentered the Earth’s atmosphere. The deorbiting satellites pose zero collision risk with other satellites and by design demise upon atmospheric reentry—m
171.
by cshimmin 5y ago
I also thought that it would be the article about FOOF, but actually the GP linked to a different one about chlorine triflouride. Worth a read!
172.
by cshimmin 5y ago
Hmmm... in good faith I'm not able to parse your question. I don't know what hu liquid is, or what you mean by "their stuff". Maybe you could try again.
173.
by cshimmin 5y ago
The trillions of neutrinos going through you are low energy neutrinos from the sun. We've been able to detect those for decades, and with only moderately pricey technology. The neutrinos in the article are high energy ones produced fro
174.
by cshimmin 5y ago
Not really. In Mathematics "circle" refers to a boundary of a disk. So it's a 1D periodic manifold, and the circular harmonics/Fourier series are the basis for such periodic functions. The bessel functions give a basis f
175.
by cshimmin 5y ago
Cool, I did not know that! What/when is this patent?
176.
by cshimmin 5y ago
There are a lot of factors that determine the duration of efficacy of a vaccine. Broadly speaking, you can lump these effects into 1) decaying immune response and 2) mutating disease vectors. For number 1), what you have to know is that the
177.
by cshimmin 5y ago
It looks like a cool model, chameleon particles arising from a dynamical scalar field associated w/ dark energy. Looking at the paper [1], it's important to note that actually the solar axion model provides a better description of
178.
by cshimmin 5y ago
This seems like a very short-sighted take at best. Moderna has been around for over a decade. Their goal from the start was to commercialize mRNA therapy, targeting a variety of therapeutic applications such as heart disease and cancer. I
179.
by cshimmin 5y ago
It seems that at some level, that is exactly the purpose of (publicly-funded) basic research on the academic side. For example, the idea of messenger RNA therapy has been around for decades in the academic literature, and of course this ide
180.
by cshimmin 5y ago
It's just a mathematical tool of curiosity that we have found very useful. Here's an analogy: You find a box, and you can't see inside it. You have no reason to think there's something inside it. But also, boxes have stu

More ›