HNHacker News
TopNewBestAskShowJobs

bananaquant

291 karma · joined December 28, 2019

submissionscomments
bananaquant··on Zillow just gave us a look at machine learning's future
One thing that I feel this article misses is the notion of domain expertise. Zillow has entered the house flipping market that has been already populated by human real estate agents and investors, who already do their work of pricing houses and striking deals quite well. To compete, a successful entrant needs to excel in at least one thing and be not much worse in all the others. In practice, that is a tall order.
bananaquant··on Intel Distribution for Python
Quite unsurprisingly, this distribution has no support for ARM: https://software.intel.com/content/www/us/en/develop/article...

I once was excited about Intel releasing their own Linux distro (Clear Linux), but it has the same problem. It looks like Intel is trying to make custom optimized versions of popular open-source projects just to get people to use their CPUs, as they lose their leadership in hardware.

bananaquant··on Of 55 students in my class at Columbia’s Film program, 4 made a career out of it
I mostly agree with your sentiment, but would like to add that individual situations differ.

In practice, the PhD experience is a full-time job for a student, and the one that is hard to quit psychologically. Many students start it right out of undergrad. They have not seen the world outside of academia, and having worked for a couple of years on their degree, they feel obliged to finish. That's when some professors choose to abuse their power and push some students into ridiculous working conditions. I have seen quite a number of students at my school reduced to nervous wrecks, while forced to stay in their programs for sixth year and beyond.

That is, working on a PhD degree with a professor involves adult people who do it consentually for mutual benefit. If such relationship breaks, it is not fair to assume that it is the student who is a dick.

bananaquant··on Of 55 students in my class at Columbia’s Film program, 4 made a career out of it
> You can generally exit at any time and immediately transition into lucrative careers in, for example, tech and finance.

I work in both and routinely interview PhDs in physics. I would not say that the transition is immediate nor easy, as the quote implies. Both tech and finance have specific knowledge, e.g., programming skills and understanding of the markets, and most PhD graduates have to pick those up on their own. Having a degree from one of the Ivies will facilitate the screening round, but past that point it hardly counts.

bananaquant··on Julia 1.6 Highlights
Julia optimizes for a different thing. You can get your result, as in the actual useful thing that the code does/produces, much faster than with C/C++. You can skip type annotations, not worry about the memory usage, and write your code interactively using REPL or the excellent Revise.jl package.

If you have saved a couple of minutes or hours of coding and are only going to run that code a handful of times, it should not matter if it runs a second or two slower than C/C++. This is the same rationale that Python and other scripting languages have. But unlike Python, you should be able to match the speed of C/C++ or get pretty close by optimizing your code.

bananaquant··on Ask HN: Is abuse from supervisors as common in industry as in academia?
From my experience, this alignment of interests is more tricky than it seems.

Sure, the overall goal is to publish as many papers as possible, but their topic more often than not is solely determined by the advisor. Those papers may not end up helping the student to get a job upon graduation, unless their topic is one of the more exciting ones and the universities are actively hiring new faculty to pursue such things further. Tenured advisors are often not concerned about this issue since they already have their job.

It is also likely that the papers are backed by the current funding received by the advisor. It is exceedingly difficult for a former student who has become a new faculty member to get funding for similar projects because they would literally have to compete with their advisor for it. Some of the more cordial professors that I've seen would actually co-write future grants with their former students, so that everyone could benefit. But oftentimes I've seen professor impose a ceiling on a student's career aspirations, so they would be eliminated from competing for the funding in the long run. Regrettably, this often happens to bright ambitious students, who have made a mistake of revealing their ability to function independently early on.

bananaquant··on The values of Emacs, the Neovim revolution, and the VSCode gorilla
For display and editing purposes, yes. However, from what I understand, the LSP, linters, and auxiliary tools all run on remote.
bananaquant··on No excess deaths in Sweden compared to the last ten years
Of course not, that's what the experts are for. I couldn't find much about young people, but data on adults should be suggestive enough (https://jamanetwork.com/journals/jamanetworkopen/fullarticle...):

"In this survey study that included 1441 respondents from during the COVID-19 pandemic and 5065 respondents from before the pandemic, depression symptom prevalence was more than 3-fold higher during the COVID-19 pandemic than before."

And not to antagonize you, but just a post earlier you were talking about protecting people in your community. Caring about their wellbeing is one of the ways of doing that.

bananaquant··on Julia 1.5 Highlights
Whoa. This looks really promising now.
bananaquant··on Julia 1.5 Highlights
Ha. I remember the time when it took over a minute.
bananaquant··on Julia 1.5 Highlights
Do they have a usable debugger now? My last experience was 2 years ago, and launching it even on some trivial code took over 10 seconds.
bananaquant··on Advancing our approach to digital currency
I think that cryptos are going to become more popular in the coming years with the ordinary people. As for the businesses — they don't want to own them, since they are not widely recognized currencies. When CBDCs come along, that would be a totally different story. They will be likely just made the official currencies of their countries.

Having said that, I can see a case for payment systems to start transacting in existing cryptos, so long as they can satisfy the regulators. They already do that with different real-world currencies. When you have a card in one currency and a business charging you in a different currency, the payment processor does automatic conversion between them for you. With cryptos, everything works the same way, except there may be a crypto-exchange in the middle. The payment processor just needs to guarantee the delivery and some stable exchange rate.

Admittedly, these are not pure crypto transactions. But businesses can already do those directly over blockchain. The major thing stopping them is that there are few other businesses who would accept crypto. Hopefully, payment processors adding support for cryptos could move everyone else to broader adoption.

bananaquant··on Advancing our approach to digital currency
It looks like Visa is stepping in the niche that Facebook's Libra has identified, but couldn't fully explore due to regulatory pressure. It would be interesting to see if they can succeed at letting people and businesses efficiently settle transactions in cryptocurrency.
bananaquant··on Hospitals are suddenly short of young doctors because of visa ban
Yes. And it makes it very appealing for hospitals to just import practicing doctors from abroad on H1-B visas. It also makes those doctors very dependent on their employers due to their visa restrictions, which allows to suppress their wages and makes them even more appealing.
bananaquant··on Mainvest – Invest in brick and mortar businesses
At first I misread the name as "Malinvest". Funny enough, the website is set up to encourage exactly that.

You have to pick a business based on a short description and some social media profiles. Some of the listings have a business plan or a slide deck, but none present an audited financial statement.

Then there is a mysterious metric called "investment multiple". It seems to be a 6.5-year ROI. When you break it down, it boils down to 3.5-8.5% return per year on the money you lend them. However, the payment schedule is unspecified, and it is not exactly clear what recourse do you have if things go under. A bank would never provide a business loan on such terms.

bananaquant··on Hertz SEC Filing: Up to $500M Common Stock
PSA: Hertz stock is already worthless. The only thing keeping it afloat are retail investors that keep piling in. They are pretty much guaranteed to lose money holding it.
bananaquant··on I got a Ph.D. at age 66 (2018)
Companies explicitly requiring a PhD is an unfortunate consequence of having too many PhDs being already out there and additionally produced each year. If you have done some interesting work and can get in touch with a recruiter, you can probably challenge that requirement in your case.

If you don't have a PhD, you do have to compete with everyone who has it. But it is still possible to gain an edge on them by simply studying what your prospective employers need. For PhD students, it is actually harder to do that unless their PI is doing something closely related.

bananaquant··on I got a Ph.D. at age 66 (2018)
> But what kind of recognition do they get?

They get paid well. Most of the stuff they do cannot be published due to intellectual property reasons, so they indeed miss out on academic recognition. This is a trade-off one has to make.

Sad to hear the story of that person. Ideally, you should not start a PhD unless you have a burning question to answer and need ample time to study it. Given that a career post-graduation is not guaranteed, it's best to hedge your bets and study something that has immediate applications and/or gives you transferable skills.

bananaquant··on I got a Ph.D. at age 66 (2018)
Don't despair. PhD life looks good from the outside because all parties involved (students, professors, administrators) have incentives to make it look good. The reality can be much different.

Besides, you've got to think how would you use this degree after you finish. Inside academia, you will be locked in a job with a mid-low salary with scarce options to advance. Outside of academia, PhD is less valued than most people think. I know quite a few people who do great research in the industry with only a BSc degree.

bananaquant··on Wells Fargo temporarily suspending applications for home-equity lines of credit
Interesting. This kind of resembles the crisis of 2008, when banks have produced too many subprime loans. It looks like WF tries to get them off their books while it still can. Or at least not make new ones.
bananaquant··on Scismic – A skill-based job matching platform for scientists
The undergraduate and Masters degrees typically don't have the research component; that's why PhDs are necessary. At the same time, I completely agree about their poor pay and not a lot of freedom.
bananaquant··on Scismic – A skill-based job matching platform for scientists
To me, it seems that the bigger problem is lack of good jobs for trained scientists, rather than any inefficiencies of matching them to each other. Academia, on the one hand, is replete with positions like postdocs and adjunct professorships that are low-paying career dead ends. And on the other, many industry jobs listing Ph.D. as a requirement don't utilize research skills, so someone with a Masters or an undergraduate degree can do them just as good. Such people are usually hired ahead of scientists.

I don't know about biomedicine in particular though. Maybe, something is different there.

bananaquant··on Model beats Wall Street analysts in forecasting business financials
I'm just working through the math in the paper right now. To me, it looks like all of the formulas could be expressed in a probabilistic PL and MCMC could be used to estimate the probabilities of both latent state and parameters. Would there be some particular roadblocks to this approach?
bananaquant··on Model beats Wall Street analysts in forecasting business financials
This is fascinating. Have you been working for a bigger company back then or was it an independent gig?
← PreviousPage 3 of 3