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Ask HN: Physicists of HN, what are you working on these days?

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171–180 of 333 posts

Re: Ask HN: Physicists of HN, what are you working on these days?

#171

Earlier quoted context omitted.

Sorry for the aside, but... Haskell gang represent!

Yo! As a further aside, I do get to do some fun graphics in R and I'm pretty impressed how R has become the statistical standard and graphics too, mainly I think from one super dynamic statistician. Now that R is entrenched I can work on moving everyone into Haskell!

[deleted]

Re: Ask HN: Physicists of HN, what are you working on these days?

#172

Earlier quoted context omitted.

Sorry for the aside, but... Haskell gang represent!

Yo! As a further aside, I do get to do some fun graphics in R and I'm pretty impressed how R has become the statistical standard and graphics too, mainly I think from one super dynamic statistician. Now that R is entrenched I can work on moving everyone into Haskell!

Would you have any interest in doing Haskell full-time? I know several well-funded companies looking for folks with similar backgrounds to yours, in SF, NYC, and London. Happy to connect you if you’re looking for something more interesting and possibly better pay.

Re: Ask HN: Physicists of HN, what are you working on these days?

#173
post #89

Just defended my PhD thesis in medical physics. Worked on radiation therapy treatment planning, which combines optimisation theory with the physics of Monte Carlo particle transport engines (and more macro energy deposition modeling as well) to simulate millions of different radiation dose distributions in patients and figure out which combination will lead to the right outcome based on what the radiation oncologist…

Sounds fascinating. What coordinate systems are used for treatment planning? Given how much bodies can change over time, and the difficulty of re-achieving a specific pose, I'm curious if there are interesting ways to correlate measurements over time. Certainly, medical training involves learning lots of prepositional anatomy words like "antecubital" but is there anything more precise, a GPS system for bodies? This seems very challenging for e.g. the gastrointestinal tract -- but I could imagine something using lots of relative reference points, the way I assume surgeons orient themselves.

Re: Ask HN: Physicists of HN, what are you working on these days?

#174
post #109

I'll leave this here, since many comments are about the transition from physics to data science. "For now, however, in hard-core physical science at least, there is little evidence of any major BD-driven breakthroughs, at least not in fields where insight and understanding rather than zerosales resistance is the prime target: physics and chemistry do not succumb readily to the seduction of BD/ML/AI. It is extremely r…

The lack of a guiding theory has been something I've talked about with regard to big data and ML in general. This said, if you look closely at the math behind ML, it looks, not to surprisingly, like statistical mechanics. So if we take some of the thought processes behind Stat Mech (or S&M as we used to call it in grad school), and you kinda squint your eyes hard to blur the less robust discussions you read about, yo…

It also looks exactly like decision theory from statistics done in high dimensional spaces. Mostly because it is.

Re: Ask HN: Physicists of HN, what are you working on these days?

#175

Earlier quoted context omitted.

In his current situation, if he zones out, he produces nothing. In the situation where he's aided by the potentially faulty described system, if he zones out, he produces erroneously transcribed data.

What? In his current situation, if he zones out, he can produce erroneously transcribed data too. What's your point?

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Re: Ask HN: Physicists of HN, what are you working on these days?

#176

Just so you don't get the impression every physicist is having a fabulous time, here's me: I have a bachelors in physics. I went for a phd in biology but had to bail to work to support family, plus I can't seem to come up with original ideas. I now have a job with physicist as part of the title, but what I really do is try to read bad handwriting from records from nuclear weapons plants. It's a dull job a monkey coul…

>As an undergrad I was excited about chaos and nonlinear dynamics.

I, too, read the Strogatz book :^).

Re: Ask HN: Physicists of HN, what are you working on these days?

#177
I switched fields to mathematics / theoretical computer science (theorem proving, to be exact). The field I had worked on in physics didn't excite me to pursue a phd/carrer, and there were no opportunities (that I could get into) in fields that did interest me. Plus, I always had a string interest in maths, so... It has been a good choice so far, but I do sometimes miss working in physics.

Re: Ask HN: Physicists of HN, what are you working on these days?

#178
post #89

Just defended my PhD thesis in medical physics. Worked on radiation therapy treatment planning, which combines optimisation theory with the physics of Monte Carlo particle transport engines (and more macro energy deposition modeling as well) to simulate millions of different radiation dose distributions in patients and figure out which combination will lead to the right outcome based on what the radiation oncologist…

So what happens to the seed??

Re: Ask HN: Physicists of HN, what are you working on these days?

#179
I have an Msc in Physics. I got it after my CS Msc, because I got really hooked on physics after reading tons of Feynman stuff (FLoP, etc). I've been programming since age 7 (C64), so I'm a programmer who got a Physics degree, not the other way around.

I worked various SWE jobs initially, mostly C++.

Then I started a Phd in Physics, but didn't finish, bc I did a startup [1]. The startup failed.

Since then I've been working in various data/science roles at companies (Prezi, Facebook, now Fetchr).

Data Science is a perfect fit for me (CS+Physics), there's nothing around it that I can't do, from setting up stuff on AWS, building dashboards, A/B testing, getting data out with SQL, doing ML with SKL or Pytorch, defining metrics and setting high-level company goals, explaining stuff to the CxOs.

I'm really good at it, I have very high impact, get paid good money, make my own rules (mastery, autonomy, etc).

Overall I got lucky because data/science exploded, and it just so happened that my interests/background/experience were a perfect fit.

I got doubly lucky bc now Deep Learning is exploding [2], which is a perfect playground for people like me (play around with models, metrics, training, loss functions, etc.)

I still buy lots of Physics books and sometimes read papers, but I'm trying to quit that, bc it's mostly pointless.

[1] https://github.com/scalien/scaliendb

[2] https://news.ycombinator.com/item?id=19499515

Re: Ask HN: Physicists of HN, what are you working on these days?

#180
I have a master's degree in theoretical physics (2006), first went into consulting. After two years I quit and implemented currency trading algorithms for a small company for five years. After that, I tried something on my own (not related to physics or coding) and slowly slithered into teaching.

Today I teach math and physics in high-school and feel like never having had a better job in my life.

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