skysight-inc/HackerNews huggingface dataset:
The non-negative constraint is so that components will only add together. One can never subtract a feature, or add a negative feature.

For instance complex sounds can be decomposed into many smaller sound "atoms". Usually this is done in usually spectrogram representation split in small sections of time. With NMF, the weight matrix becomes how much each of the atoms is added to form the sound mixture.
The weights can then be used for classification, similarity or synthesis.

Allowing to add a negative amount of a sound atom would make interpretation harder. What does it mean for an anti-sound to be present?
Destructive interference of waveforms is possible, but quite rare to encompass a whole "atom" in a realistic acoustic scenario. And when not combined with its inverse it just sounds like a sound to the human ear. So its contribution is not always negative either. NMF interpretation is straightforward in comparison.
Since many people including me compare bitcoin to gold in terms of it as an investment that is not based on any real-world usage, how does the environmental impact of mining bitcoin compare to the environmental impact of the total amount of gold mined from the earth that is only used for investment purposes?
It's not the only thing they're raising...
That's Sweden, not the USA.
Distrust of Intellectual Authority
> Instead of focusing exclusively on the removal of extreme content and accounts, it will be necessary to regulate against harmful infrastructures and malicious behaviours.

I'm as alarmed as anyone else by the proliferation of conspiracy theories, from vaccination autism to QAnon to Flat Earth, but I'm also suitably cautious of official or quasi-official narrative control deciding which views are legitimate.

That is a level of power that never ever fails to corrupt its holders; a cure worse than its disease.
I was only replying to a comment that acknowledged supply changes could affect prices, but seemed to intentionally downplay changes in demand having any effect (which is why my hypothetical millionaire has to buy so many lattes that coffee shops were running out; having people with more disposable income doesn’t change demand until they spend that income). Sadly I am not a millionaire myself, and have no firsthand knowledge about how they spend their riches.
Having recently gone through some interviewing (for machine learning research), a very cynical but overlooked aspect (in this thread) is the following:

After receiving an offer from a big tech company, the interviewing process has already completely turned me off from the idea of working there.

Now despite this being a dream position for many and me having no alternative but to take it currently, the smug interviewers have already gotten me in the corporate mind-set: No matter, the reputation and salary, treat it like any other job, do not bother being loyal - they will not be.

So the terrible interview process has at least the advantage of reminding future employees what they are signing up for.

I wonder what kind of psychological filtering is at play. Do employees feel loyalty after an interview process that is best described as hazing? Are they projecting the humiliation they experienced when interviewing future employees? That's always been my impression.
At my consultancy we recently streamlined our interview process:

1. Phone screen which takes 15 or 20 minutes.
2. The candidate fills out an essay, including showing us some code they're proud of.
3. If the essay ticks the boxes we conduct a 1 hour on site interview. We use the same a set of questions for every candidate, so the investment is easy to manage, and our team has a shared set of expectations on what is good or bad.
4. If the interview goes well, we give them a take home assignment. Takes between 2 and 6 hours, depending on how experienced the candidate is. Problem is in C and/or Python (or both)
5. We wrap up with a 2 to 3 hour onsite interview. We walk through the assignment and have a deeper conversation about culture and fit.

The results have been positive for us: we've made some great hires and weeded out some candidates who weren't a good fit.

We've also been able to scale it down to the process we use for interns.

The 1 hour interview has some typical programming interview questions, but we wrap them into a real-world example. The goal isn't to prove they know how to program, but more about allowing them to show us how they think/work out a problem.
Report claims Huawei tried to copy Apple Watch heart rate sensor
I can recognize some of the traits from the article in myself and I can guarantee you that I (and, I suspect OP as well) would be quick to claim that my comments are "merely factual" and that I am great at differentiating personal opinion from bad form as well.

I don't know you, so you might be 100% right but if the article makes you feel slightly defensive, perhaps it's a good reason to do some introspection.
> This is the unintended consequence of hiring and promoting based on identity instead of merit.

I would argue that the more apt description is: This is the unintended consequence of hiring and promoting based on aptitude instead of current qualification.

In other words, when you see a 'less-qualified' individual who 'made it due to affirmative action', it may be constructive to remember that they are probably just as 'talented' as their peers, albeit not as 'qualified.

They haven't had the time/resources to capitalize on their god-given talent due to various socio-economic pressures.

In a way, affirmative action is rewarding merit -- it's just a different definition of merit that looks at how much you've excelled in your field in the context of the difficulties you faced along the way.
Thanks, I appreciate your well-argued comment! I agree with all your points though I wouldn't use the word rubbish. Perhaps I just misunderstood the GP or is more "forgiving" to quirky software.
I wish I had 100 up votes for this quote: "Disconnecting ego from the work was the first big lesson I had when I started working in software."

Until you can do that, you'll always be a lesser software developer. You'll concentrate on maintaining your ego instead of developing the best software for the problem at hand. In a way that's the gist of the article.

It's interesting, but at the company I've worked at, where we've had dozens of senior developers come and go, we've never had this problem. Our approach to code reviews is purely educational. "Here's how we do it so we have the least amount of trouble understanding each others code." Everyone seems to be good with that, and egos get left at the front stoop. I've learned lots, I've taught lots, and I've never felt better than anyone or worse than anyone. It's all about the learning.

And let me tell you, when you hire some junior dev, and he gets these code reviews, and 3 years later he's a senior dev and anchoring a project, it's a pretty good feeling. I think better than any feeling you can get from lording knowledge over others.
You could write this exact article but for the research peer-review process...

Actually, can somebody write that? :P
Amateur astronomer here as well that has also done a bit of lunar photography. (envious of your EdgeHD 14...)

I made a similar comment about the moonglow, but thinking a bit I think it's a combination of:
- Higher dynamic range than the human eye (combination of stars, moonglow, and high contrast lunar surface both in shadow and in sunlight)
- High resolution imaging, and the digital signal processing aspect (noise reduction, deconvolution, etc.)

They combine to make something that looks kinda like reality but is really a mix, and maybe triggers a little bit of the uncanny valley effect.
Then it's still using up renewable energy that could have been used on something else. Electricity is mostly fungible.
Does anyone just give you someone else's code and have you write tests and documentation for it?
How Scandinavian Countries Pay for Their Government Spending
Author here. AMA.
It depends on assumptions in the way a system is hardened. For example, a home directory mounted noexec. In theory, LD_PRELOAD will not mmap a file in a noexec area. But if you can find an installed library with functions that mirror some other application you have, and you can LD_PRELOAD that library before executing the target application, you might be able to force the library to call unexpected routines. (That's a stretch, granted)

Another would be possible RCE. Say you can get a server-side app to set environment variables, like via header injection. Then say you can upload a file. Can you make that server-side app set LD_PRELOAD to the file, and then wait for it to execute an arbitrary program?
I need to say that I am a bit unsure how to relate to the two possible interpretation of "token black person". On one side there are people that assume black people at prestigious jobs are black token on the other side there are people that explicitly set out to hire some black tokens; in the middle you would have the society and culture that allows it.

The first side is an easy case of racism in most cases, the second side seem more nuanced. In the GP case apparently the person thought of himself as a black token, that is for sure a bad situation... but I cannot wrap my head around "how" it is a bad situation and its implications.
Also, for non-DSLRs: http://chdk.wikia.com/wiki/CHDK
For some reason I assumed that it was referring to subcontinent Indians, and was slightly confused because I don't consider it racist to point out that their road system is absolutely atrocious.
When I was diagnosed with cancer of the base of my tongue and my neck my doctor outlined my options and the need to waste as little time as possible. I suddenly realized how much trust she was asking me to place in her. I took 2 days for my own research. I didn't research the options she gave me thinking that was a rabbit hole leading nowhere, I researched her.

Turned out she was Harvard med school, two Johns Hopkins fellowships and a handful of primary author papers all specializing in head and neck cancer. I took her advice on a treatment plan without fear.

I believe it's almost impossible to research treatment methods on your own because the field is so fragmented and complicated. You don't have a month or two, you have days. Researching your medical team is black and white, fact driven and objective.
Is it a surprise to anybody? My favourite example of interviews going bad is a tech company in SF asking to find cross currency arbitrage loops with all known currencies over the phone in the first round hiring data engineers for the ETL team. I am glad I did not pass that round.
A magnet for the gullible and unstable of all cultures. Like a weaponized florida.
It’s a Unix system, I know this!
That's a rather simplistic political view.

Divide all professional achievement equally among races, although individual scientific recognitions (as in this case) are not up to the state to divvy up, but, up to the individual person to earn via hard work and innate talent.

Even in the case mentioned in the article, it seems like a doctorate was awarded mostly on political grounds and not so much on the quality of research of the individual in question.

Which means the madness of affirmative action politics has already reached the highest levels.
exactly that you can have very interesting conversations. in a setting that the interviewee is most comfortable with, since the assumptions/details are determined by them.

it put the pressure a bit on you as interviewer, since you need to adapt your questions. but in general i found it quite easy when you have a rough plan on the topics to ask.
Speaks to a culture antithetical to traditional western business ideals, no?

Not to say it doesn't happen here, it's just not so brazen.
> "A couple of weeks of work with a task being assigned"

lol, OK
Who has time to spend a few weeks off from their full time job just to interview?
> The 'right' answer is to stop allocating swap in a separate partition, and share swap space with the filesystem.

Does hibernate/suspend-to-disk work with non-partition swap? IIRC that is/was a limitation.
btw http://asciiflow.com/ is great for doing ascii diagrams like these.
Here's the image in a high res image viewing tool https://micr.io/i/WFjqr
Many interview processes generally paint the company in a grimmer picture than it actually is. So I would do additional research than turning down an offer because of a bad interviewing experience. Of course, you are completely in your right to do so, but it might not be the most optimal behavior.

Usually, interviewers are just bad at interviewing and aren't really aware of what proper behavior is. It actually isn't easy, nor is it a desirable activity nor do you really get points for it in your performance review.
> For the record, here is a small sample of other communities where black people are strongly underrepresented:

> Runners (3%). Bikers (6%). Furries (2%). Wall Street senior management (2%). Occupy Wall Street protesters (unknown but low, one source says 1.6% but likely an underestimate). BDSM (unknown but low) Tea Party members (1%). American Buddhists (~2%). Bird watchers (4%). Environmentalists (various but universally low). Wikipedia contributors (unknown but low). Atheists (2%). Vegetarian activists (maybe 1-5%). Yoga enthusiasts (unknown but low). College baseball players (5%). Swimmers (2%). Fanfiction readers (2%). Unitarian Universalists (1%).

> Can you see what all of these groups have in common?

> No. No you can’t. If there’s some hidden factor uniting Wall Street senior management and furries, it is way beyond any of our pay grades.

> But what I noticed when I looked up those numbers was that in every case, the people involved have come up with a pat explanation that sounds perfectly plausible right up until you compare it to any other group, at which point it bursts into flame

Excerpt from Black People Less Likely: https://slatestarcodex.com/2015/02/11/black-people-less-like...
Yeah I had to learn this lesson, and I think I will continue to find my ego cropping up in strange places, and again practice letting go.

My ego drove me to work extra hard to try and impress others. I would become petulant if I didn't get my way. I look back on the first few years of my career with so much cringe!
It's also a fundamental problem with our current copyright law where material remains in copyright for many decades after it has stopped being printed and sold through primary channels.

Copyright should automatically expire 10 or 15 years after the last printing IMHO. If nobody cares enough to put it up for sale or even make a tiny print run just to renew the copyright, why should the government continue to enforce it?

Of course this scheme falls apart a bit in the digital age, except that even ebooks get pulled from the shelves for no apparent reason. Maybe we should just go back to having to explicitly renew copyright after 15 years or so, with a fee just large enough to convince people to drop dormant works. Maybe a couple hundred bucks every 5 years.

The best part would be having some easily accessed online system where you could check the copyright status of any work, including current contact information for the rightsholders if you want to arrange payment.
India has realized that handing over its enormous market to foreign companies not only stifles local business but is a national security issue. Facebook, Google, Visa, Mastercard all have detailed info on Indian nationals, control communication (WhatsApp, WeChat) and can manipulate the retail market (Amazon, Walmart). So they are imposing restrictions similar to the EU. Data has to remain on local servers. They have created an alternative financial card payment network (National Payments Corporation of India) to challenge Visa and Mastercard. The government wants the ability to throttle communication when necessary (see Pulwama terrorist attack )
>Even if you’re talented you probably know 0 people that can help you. Now your growth is prematurely stunted.

This was my experience, and was challenging. At the time I was more inclined to the arts, but the problem is the same. Who can you talk to about the books you're reading (my particular passion)?
dplyr 0.8.0
> Have different standards for awarding doctorates based on race?

This is not at all what the article is saying. The article argues the low percentage is partially due to a "leaky pipeline" where black students don't have access to the same educational resources, and partially due to an unwelcoming atmosphere. The "So what?", if there is one given, is that we should address those issues, and the only example they give of how to do this is voluntarily setting up and participating in organizations for minorities. Implying the article as asking for lowered standards for black people is a mischaracterization.

I wouldn't even look at the article as an argument for any particular educational policy though. To me it seems like the article is light on the "So?", because its main aim is just to convey what's in the title: "What It's Like to Be a Black Mathematician". If the content of the article just boils down to "it's kinda shitty", it would still be worthwhile and convey valuable information we should care about, even if the implications are left to the reader.
I think this might be the video you mention: https://vimeo.com/44887922 - interesting stuff.
I was only answering for the Amazon case... the rest comes down to two things, in terms of home security, it's mostly driven by the consumer demand. As to general surveillance at larger levels part of it is maximizing the fractions of a penny. I mean, if you can sell a piece of data for a fraction of a cent, but have 50 billion fractions to sell, that's a pretty big hunk of change.

There are also those genuinely concerned over $STATE$ security and working towards that as a goal.

I'm not condoning or supporting or rejecting for that matter any of the above. But it really doesn't take too much to see several reasons why this stuff happens.

As to the losses in relation to retail stores... retail stores generally have higher margins, and they still hire security staff and put up cameras.
Health care insurance, privat sjukvårdsförsäkring, can deny you. Talk from experience.

Makes a lot of sense as well, anything else would be weird. If this was not the case you could just get it when you have already been deemed sick, to get the faster private care instead of public health care.
I don't entirely understand why some people find CSS so difficult to work with. I agree that it has its own challenges, but solutions generally aren't very complex. Global selectors ("variables") collisions? Use namespacing. Specificity is convoluted? Simplify by using only non-nested classes.

Does the annoyance primarily center around the fact that styles cascade to child elements? Hard to tell from the article.
Agreed - love the Web Mentions addition!
Standard set of questions is a must, some companies do not realise that and surprised when totally random people show up on day 1.
>Meritocracy was the default for institutions so long as someone could enter the competition. The aberrations were for nepotism/ cronyism but those appear to be relatively limited.

Limited? Weren't universities merely the place were nobility and rich heirs went to study to get back and lead their inherited empires?
> At the end of the day, nobody can change Bitcoin's monetary policy

A majority of hashing power in the network could change Bitcoins monetary policy.
Interviews are like taking the SAT or ACT. For better or worse they’re highly standardized and you just need to prepare. There are a bunch of different prep service like InterviewCake.com, Pramp.com, and PracticeCodingInterview.com that are good if you feel like you need more than just leetcode grinding.
No it’s not “dangerously inflexible” — Coca Cola can be any particular vice for a culture. The point is that in my culture, ice cream and Coke are not “good” for you, but they make many people happy. You can find similar “bad” things in every culture that make life worth living.
I upvoted you based on the first 90% of your reply, but that last full paragraph is just silly. Sure, you can evaluate someone more fully in 2 weeks of working with them than in an afternoon of interviews, but who's going to spend 2 weeks working with you, just for the possibility of continued employment? No one who isn't both desperate and unemployed, that's who.
You shouldn't be unsure. You weren't there, and the person who is relating their interpretation of the comment was.
"When your metric becomes a target it ceases to be a metric".
When my styled-components app is in prod, the styles are non-editable. When developing, I can use Chrome Dev Tools. On prod, I have to copy paste. Maybe I'm doing something wrong?
Others would argue that there's no evidence that the US federal government could improve healthcare outcomes, and that there is evidence that border walls work, say, in Israel.

I'm not interested in arguing any of this either way. Just that "no evidence" can mean "no evidence that I personally find convincing".
physically swap the two monitors?
I tried to work through a proof of “free trade makes the pie no smaller,” and it seems like it only works if you’re considering one good.

I reasoned thusly:

1. Country A can produce good X at price p_a < price p_b the price at which domestic X is available in B.

2. No deadweight trade loss, so X is available at p_a in B

3. Thus for the same quantity n of X, B has a surplus of n(p_b - p_a).

4. But domestic producers of X have lost income, and if there isn’t something else for them to do, the total shrinkage in B’s economy may exceed the surplus (I haven’t worked out this term but it should be pretty easy), thus leaving B worse off.

Factor in deadweight losses and free trade definitely could leave B worse off, by forcing some of its economy to be unproductive.
You do want to express yourself, don't you?

(Sarcasm, Office Space reference, I'm with you on the stickers.)
Agreed, and is interesting to see that the arguments against China are purely ideologic. There is no fact supporting the idea that India would have an advantage over China because of democracy. In fact, people really don't care. As long as the quality of life for people is improving, they don't have any problem with a communist government.
Ok it's done: https://digitalsuperpowers.com/blog/2019-02-16-publishing-eb...
How do you handle two separate onsites for people that have to travel to get to your office?
Factually speaking there are, for example, women secured positions in Universities. So "...Have different standards for awarding doctorates based on race"? Maybe not for Ph.d, but for tenure the answer is factual yes.
> In a way, affirmative action is rewarding merit -- it's just a different definition of merit that looks at how much you've excelled in your field in the context of the difficulties you faced along the way.

This a good way to put it, but under this light an income-based affirmative action would maybe make more sense. Even better if based on both the income of you family and the Gini coefficient of you district/city/area.

(I am not an expert on affirmative action, I never heard of this but I don't know if it is already in place)
Well it started off with Microsoft in the 90's, then Google in 2000's and then it just became common for every company in SV to conduct these programming interviews.