Viewing profile — mattheww

Did my thesis research at Brookhaven National Lab, home of the Relativistic Heavy Ion Collider (RHIC), which is the predecessor of the heavy ion program at the LHC. While there, on…

You're right, the thing limiting the value is not demand - there are more than enough faculty and high-level staff that want to live there. The thing limiting the value is the othe…

FYI, if you make a realistic calculation (including tax and multiple winners), the EV of a lottery ticket is still negative. Depending on your tax bracket, the non-jackpot prizes h…

There are four questions at the end of the post. For sure, the second one is answered - it is possible to parallelize GNNs to the billion-scale, while still using message passing. …

It's unbelievable that nobody has done this well - I and most people I know are tracking their own job searches on a spreadsheet. Pretty obvious value-add for job searchers. Not to…

If you know a way to find clusters of intersections of hyperplanes, I'm pretty sure you can get a highly acclaimed paper out of it, but that is not what a Hough transform is. The H…

To be fair, 50 PU is above design peak luminosity, much less mean. And I'm sure I've seen plots from both ATLAS and CMS at the end of LS1 that show improvements in the processing t…

Hough transform is basically useless for precision tracking in a high multiplicity environment. Tracks have 5 degrees of freedom, so the memory costs make it infeasible. I think AT…

Depends exactly how you limit the problem, but going from detector hits to abstract arcs takes a few seconds.

The main thing of interest here is whether a system that knows about physics (traditional approaches) can be beaten by a system that has no a-priori knowledge of physics (OOB DL) o…

RE 2: What I mean is that "N-sigma" and local p-value are being used interchangeably, which you can see from this plot. There's no "number ... calculated without including info abo…

>That number is calculated without including info about any theory/evidence regarding the Higg's [sic] boson. That's not true. You can see plots in the 2011 and 2012 papers that gi…

So there's no obvious practical application (right now). Also, the proton is not 4% smaller. Protons are obviously whatever size they are. The discrepancy comes from the fact there…

As you can imagine, the long-lived particles can have "any" lifetime. Since the lifetime is unknown, it makes sense to probe many lifetimes. The experiment being suggested by Lubat…

The argument in favor of an electron-positron collider is that there is much less "junk" in the detector from the hadron collision. So the trade-off is that you produce a lot fewer…

Experiments like IceCube answer different questions than accelerator based experiments. You couldn't, for example, measure the Higgs branching ratio to bottom quarks at IceCube. On…

This is not a very straight-forward question to answer. The short answer is that both CMS and ATLAS detected a couple thousand Higgs events. The long answer depends on your definit…

I am a scientist, and I have seen a lot of terrible code. Most scientists have no formal training in computer science or coding. Many advisors don't place much value in having thei…

It's based on the fact that particle energies follow a continuous distribution. See, for example: http://www2.astro.psu.edu/users/nnp/cr.html .

Close to nothing would happen. The relevant quantity to understand is the stopping power (usually referred to by us physicists as dE/dx). Stopping power drops significantly as ener…

Actually, it does follow. If there are particles of the energy described in the original link, there are many more particles of lower energies also hitting the Earth's atmosphere, …

These off-base criticisms reflect the fact that commenter did not read the whole paper and likely did not even read the introduction, which ends on page 3, where he found "serious"…

Why do you want to limit by location when the the data is already separated by cause? All of the Tesla fires were caused by collision. If you compare (Fires caused by collision)/Ve…