skysight-inc/HackerNews huggingface dataset:
> In fact, this is part of why a piano sounds like a piano and guitar sounds like a guitar.

My understanding is that it is a bit more complex than that, literally!

The the final waveform is a not just

W = sum(a_i * f_i)
= Psi

where a_i is the amplitude and f_i are the fundamental frequencies.

It is actually

W = sum(a_i * f_i + sqrt(-1) * (b_i * f_i))

= Psi + i * Phi

Loosely, the imaginary part plays a significant role in making an instrument sound like it.

Of course, the brain fills up a lot of stuff that is still a mystery but the elec keyboards can set the a_i, b_i to change from "guitar" to "reed organ".
"If we can't get them out, we'll feed them out."
- King Edward I, Braveheart
CPython internals: A ten-hour codewalk through the Python interpreter (2015)
Education does not work. Mexico has shown that regulation does work, they regulated sugar which has had a positive effect on health. The food industry needs to be regulated. The few conglomerates are engineering unhealthy people. It's that simple. There is very little actual food choice because the market optimizes for profits, not for health. In order to give health a fighting chance you need to regulate the market to change the game. Food is an addictive drug, we regulate all other addictive drugs.

https://www.theguardian.com/news/2015/nov/03/obese-soda-suga...
That's a distinction without a difference as anyone who receives the binary must also have access to the source and be free to redistribute that source, so effectively all derivative works of GPL'd code are GPL'd unless you refuse to distribute.
Ask HN: Delaware C corp registered agent?
It looks like I need a "registered agent" when incorporating as a Delaware C corp - anyone know how to choose one? Is there one that YC companies typically use?
The Head Of Uber's AI Labs Is Latest To Leave The Company
> promote education

IMO it's not so much about education as about how to help people shape their habits. People already know that candy-bars and french-fries correlate to obesity, after all.

> that simple

Or at least, so close to being that simple that there's no point confusing people with erroneous details.

https://xkcd.com/669/
Having specs, and dimensions, allow 3rd party or diy replacement. As is, we are flailing in the dark.
You're of course leaving out the complexity in how "Calories in" and "calories out" are derived for individuals.

Some people consume too much calorically as a mental-health coping mechanism. Some people consume too much calorically because the food culture they were raised in promotes that. Some people consume too much calorically because they have a lack of real options to purchase fresh whole foods.

Some people don't expend enough calories because their lifestyle makes it difficult (work + family + etc). Some people don't expend enough calories because the lifestyle they were raised with doesn't promote that.

These are just some of the ways that simple equation you've posted become immediately more complex.
> One study found that more than three-fourths of all American teachers hired at age 25 will end up paying more into pension plans than they ever get back.

You're welcome kids - we've been stealing your money for the last few decades by ignoring basic economic facts. As a result of our greed, instead of getting more out of your retirement savings than you put in (you know, from things like compound interest and investments), you're paying for the previous generation's unsustainable pensions. And of course since we've backed ourselves in to this corner, we can't let you opt out of the pension plan so you can behave responsibly on your own..
confirmation: https://www.facebook.com/gary.f.marcus/posts/101551485602847...
Is it really in the best interest of society to allow food makers to advertise superstimuli-level [1] food products that we know in aggregate make is less happy and likely to die earlier? Why? We regulate all sorts of substances that we know are harmful when ingested. We shouldn't make exceptions for things that happen to be called food. Even if we don't want to enact anything as drastic as a "soda tax" or a ban on refined sugar, we can at least stop processed-food companies advertising to children and creating life-long bad habits.

The FDA could also be more eager in approving appetite-regulating drugs, allowing people to choose to take on certain risk in exchange for large potential weight loss. Several effective agents have been known since the 1920s; is a small risk of cataracts or heart valve damage in a small number of people really worth allowing millions of people to be sicker than they would otherwise be?

Speaking of drugs: smoking decreases BMI quite a bit. Granted, it damages the lungs, but like most things, tobacco has a mixture of positive and negative effects. Given that we have an obesity crisis, was taboo-ing one of the more popular and effective anti-obesity tools really the right choice?

[1] https://en.wikipedia.org/wiki/Supernormal_stimulus
https://archive.org/stream/theoryleisurecl00veblgoog#page/n1...

https://en.m.wikipedia.org/wiki/The_Theory_of_the_Leisure_Cl...
Fun fact: the waveforms shown are bessel functions, the daddy of sine (and cosine).
This artist turned Snapchat nudes into an art exhibition
Is this really different from smoking or another harmful unhealthy lifestyle choice? It's abusing food, and it has negative consequences.

The cost of health care to manage obesity and related issues is staggering and will only increase.

Maybe the USA should start having a BMI tax?
It used to be that teaching was predominantly male and programming was predominantly female. Now it's flipped. Did something change in our biology?
Strong currents push to classify work. Structures like jetties and piers oppose declassification.

Silt builds up at classification boundaries. You should expect to see a bunch of S crap that can't get to the TS tools, TS crap that can't get the compartments needed for the great tools---all in service of not devaluing the tech.

This was the U silt pile.
Women's achievements have been acknowledged and cherished throughout history. Marie Curie was the first individual (not woman: human being) to receive two consecutive Nobel prizes. How is this possible in a world that "erases" female achievement? but you know this. I'm sure you could rattle off many more examples than I know of of women whose achievements we've cherished, completely oblivious of the contradiction, if I merely uttered something along the lines of "men invented everything".

You are racketeers, nothing more and nothing less. You're the ones who scare women out of STEM fields by conjuring illusions about how awful it is and how the world will never value their contributions because they are women. It is pure fiction.

However, it's very good for people who want to profit off of women's suffering. You convince them that the world hates them, they recede from participating in it, and you get to point at this as further evidence that the world hates women. Rinse, repeat.

Women are merely the coal for your engine. The true misogynists wear feminist clothing.
>Comey also reiterated a plea for technology companies to enable authorities to access encrypted data on mobile devices and in messaging apps.

At a "cyber" conference, whatever that means, but I assume it's the sort of place technology leaders will be hanging out. Aka, exactly the sort of people who would predictably react to his news that the FBI was unable to crack half of the devices they acquired through warrants with "oh, you were able to crack half? That's not good, we should increase security."

What's with the government's thick skull when it comes to what the technology community wants? I think the majority has been quite clear.
A Hacker’s Guide to Kubernetes Networking
Or maybe he did so because he kept getting unfair or incorrectly issued tickets.
As much as I agree with you, I think it is unlikely to be cleared up to any great extent. In my mind, the main question of whether or not VMware is in violation of the GPL rests pretty squarely on whether or not it is a derived work. That definition, in a legal sense (AFAICT -- I'm not a lawyer) is intentionally vague. Potential violations in this sense will almost certainly have to be tested on a case by case basis. Which is frustrating for everyone.

Like you, I hope for a speedy resolution of the VMware situation, but I'm not so confident that such a resolution will shine much light on similar issues in the future.
Learn About Twig Template – PHP – Part 1
I don't think this is an accurate picture:

1. Job growth has increased overall by every measure since the EPA has started. Regulations mainly affect industrial manufacturing jobs, and job growth in most of those is more affected by automation than environmental regulation.

2. Overall air and water pollution is down substantially in the U.S. since we've put tougher regulations in place. What this article seems to be saying is that we're reaching the point where toughing EPA regulations further won't do as much to improve air quality since half of the remaining air pollution is coming from outside the country.

3. International trade regulations and consumer actions can still reduce some pollution outside of the U.S. simply by making more environmental friendly manufacturing a selling point for your products. It won't have as much effect for heavy industry, which is what produces most of the pollution, but it can and has made a difference in electronics and use of plastics in packaging.
Blockchain in Real Life: Maersk Supply Chain
We did not get "beat with our own playbook". The Trump that won in November was the same product launched on that golden escalator the previous year, so much so that political pundits faulted him for it in the run-up to the election. He didn't iterate. He didn't test his message carefully. He barely even won --- he lost the popular vote by a greater margin than any candidate in US history.

But nobody who reads that article will realize that. They'll imagine instead a dynamo who "seized the playbook" of Silicon Valley and used it to cruise to an Silicon Valley-style 10-bagger victory.

You should refuse to comment on articles like these. You have no special insight into why or how Trump won. You chose to be the CEO of Y Combinator. You can't ask for our sympathy when your words, freely given to the newspaper of record, have an impact you didn't intend.
Yes, I host Meetups (though none lately), and I attend Meetups.

Your app sounds like the sort of thing I might want to use, but I would like to hear how you differentiate between your offering and existing services like Eventbrite, Brown Paper Tickets (both of which I've already used), Ticketfly, etc.
Well, except that it would have been slower... that's why it got removed.
Sure. And also, may be the Google-Inte Skylake comes from past year, when Google was testing POWER9 chips... [1]

[1] https://www.theregister.co.uk/2016/04/07/open_power_summit_p...
What are other providers that you use? Since you are using it as input to your training set, it should have fairly high accuracy (even more accurate than manual errors in tagging)
It's gpucc, so it builds from LLVM when you enable XLA in the TF configure step.

Trying to understand: you don't want to ship a compiler library on principle, or is it some kind of product requirement, or ? There's lots of cool work to be done in the compiler space so use cases help to prioritize. :-) Thanks!
That is... dedicated.
See - I have the opposite issue, if I'm using a computer I want the information on a webpage or form, if it's not then I want to call and talk to someone - never a machine. If I'm interacting with a system, I want to interact with the system as directly as possible - if I'm interacting with a human, I want to interact with the human as directly as possible. Talking to a machine is a terrible UI in my experience.
> weight bias and discrimination raise the risk of developing heart disease and diabetes

The idea that a study conclusively demonstrated that in a meaningful way seems extraordinarily unlikely. I'd be awful curious to see the methodology of that.
Oh man. Thanks! That makes so much more sense with the explanation.
I haven't A/B tested it so I can't say for sure if I "have" to but yes, I continue to manage my intake as closely as I can. I read the labels on everything, measure liquids or weigh foods where the package is larger than a single serving, and so on.
All joking aside :), checking HN is not time-wasting if it is useful for one's priorities (professional, personal development, etc.).

I don't read everything on HN, but I can usually find here interesting articles, and most of the time the discussion threads are even more interesting than the articles.
And then there was Webvan that IPO'ed in Nov, 1999 with a market cap north of $4.8 billion. RIP: 2001.
I haven't really paid attention to men's physiques, but there's a stark difference between the silhouettes of women in many cities of Europe and those in even the most "superficial" US states such as California.

I know the PC police will eat me for lunch for saying this, but the dating pool, at least in the 20s and 30s range, shrinks considerably in the US for anybody used to European body image standards.

Whatever's happening to the population here is not normal. I don't know if it's our lifestyles becoming totally sedentary, if it's food marketing having reached absolutely irresistible heights, or if it's the lack of a culture of slow eating, but something is clearly not working and it really doesn't feel like the individual's fault, it seems actually systemic.

One thought is perhaps we should start treating the constant incessant advertisement of food the same way we treated the cigarette industry and regulate its appeal to children, put up disclaimers about what happens when you down that entire bag of cheetos etc.
They are almost always in a union. All men and women who are in a union make equal pay.

This is not necessarily a good thing as unions basically underpay star performers and overpay bad performers. whether or not that is a good thing is your own opinion.
Every complexity you posted still comes down to consuming more calories than is needed.

The reality is the vast majority of people eat way too much, and the dietary guidelines for caloric intake are far too high for a largely sedentary society.
It may be that that lower income means lower quality food means higher BMI, in which case a BMI tax would exacerbate the problem. Food for thought.
Remote North America
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CICO isn't very useful because all diets that are successful are CICO. It's like saying space travel is simply applying enough force in the right direction.

Logging and limiting calories isn't the only way to achieve CICO.
Birds are safe from electricity cables, since there's no voltage difference when they land on a line.
Don't forget splash
tl;dr: it's like juggling, apparently. Also, this is actually a promotion piece for his new book.
Did you see the "using tfcompile" section of the docs? https://www.tensorflow.org/versions/master/experimental/xla/...

If you're looking for more detailed information that's missing from the docs, please do file a Github issue about it. Thanks!
20 Awesome Websites for Collecting Big Data
This seems a bit left field. If you were a $100MM startup I could buy this argument but at $3.4B you better believe that their valuation is tied to their gross volume of goods and revenue moving through their platform.

Which is why the recently announced a change to tipping, where it would no longer be hanlded separately but instead as part of the regular checkout so as to make their revenue numbers look better.

They could certainly look into an advertising model for virtual shelf space, but that will be a significantly smaller amount of money than what they are doing in grocery delivery.

This is the same play as Seamless/Grubhub, and while they have a "promoted" listing which generates revenue, the majority of their revenue still comes from creating and order and doing the delivery.

The real benefit to Instacart from an investor perspective is that they are taking a distributed market and consolidating it into one single player. So while some stores may do their own delivery, by consolidating that space into a single player they are able to create tremendous volume.

Now, at 33% the value of whole foods that's a different matter. But there are some attractive pieces to Instacart's revenue story.

They don't stock inventory, so there aren't many carrying costs, they are charging 20% on the order which means they directly benefit from customers spending more and you can quickly see that their immediate revenue model assuming they can keep costs under control is definitely enough to justify the price.

The real question is how much money they are losing and if they are able to become profitable in the long run, but that will be a question that is decided well post IPO.
Boutique cars usually have fanatical service, can you provide any examples?
We really have put some drunken thought into it over the years! A collection of random electronics spanned over generations would cause some wrinkled brows for sure.
Healthy California Act: proposal to make findings about single-payer healthcare
At what point do people take responsibility for their own bodies and their own lives? We all know the secret to not being obese. Asking the government to step in and help us just seems... childish. Are we not adults? Do we have no agency?
Functional Programming in Python – Tutorial Video Shows How
Fear not, that's a problem that will solve itself eventually.
Cancer-causing benzene found in e-cigarette vapors operated at high power
There is a genetic component to being overweight that you are overlooking. It's not just eating less .
Are you implying that he did something dishonest? I can't recall one example even. Although, I do recall a handful of politicians and news stories claiming the DKIM verified emails were likely fake. For example, I remember when Donna Brazile said that it wasn't her who sent the email leaking debate questions. Russians probably broke DKIM, and Brazile was probably coerced into admitting she's a liar.
It's easier to eat fewer calories when the foods you eat are high in water and fiber content.

https://www.youtube.com/watch?v=0CdwWliv7Hg
I very much want to hear the words "failure isolation" during a systems design interview. Usually as the answer to "Why did you break that functionality out into a separate service?". The answer should involve "independent scaling" and "failure isolation".
Git: Such an inconsistent mess that even professional malware authors can't remember how to use it.
this just means there is a negotiation skills gap.

there are a million parameters you can compare people on and determine who makes more money in life.

good looking people make more on average too.

If you're bad at negotiation it has nothing to do with being a man or woman. Are we supposed to nationalize or socialize individual negotiations?
The way mobs and politics work, no, it appears that in aggregate, we do not have agency. That is the tragedy of the commons.
Also - sometimes it's refreshing to see an interesting post and not have to see replies about how someone is an expert at estimating the weight of rabbits based on the size of their hole. Or read about "orders of magnitude" of this or "straw-man" that.
One of the more plausible (to an uneducated person like me) theories I've seen in a few places is that we've bred food (both plants and animals) for size and pest/disease/shipping durability at the direct expense of flavor. Flavor is a key signal for nutrition, so our brain goes "not enough nutrients, eat more to get them!"

Here's a Vox review/summary of a book: http://www.vox.com/2015/7/30/9070255/dorito-effect

> Flavor technology got very powerful in the early 1960s, and it wasn't long after that that we began to see the startling increases in body mass index.

> All the good stuff we grow — tomatoes, strawberries, lettuce — has gotten continually more bland. This has been measured. They have become diluted of nutrients, as well. As we selected crops for agronomic traits like yield, shelf life and disease resistant, we never selected for flavor. And we lost flavor as a result. It's reverse evolutionary pressure.
> Sam is providing a different perspective for looking at Trump's presidency, which he's made it clear he's not happy with.

Those quotes might be reasonable on the context of an essay by Sam aimed at providing a "different perspective on Trump's presidency" (though Sam's own comments here suggest to that they wouldn't be much better in that context, but that's another discussion.)

In the actual context they appear, they are normalizing of Trump a d suggest, at best, an extraordinarily naive approach to the media in his position.
Well,

Recently I’ve been trying to figure out what is special about mridangam and was wondering if I needed to do some analysis myself. Fortunately, I happened to run into CV Raman’s papers analyzing the physics/acoustics/wave forms of a mridangam that are well worth a read.

He first wrote his short paper in 1920 in Nature (almost 100 years ago)
http://dspace.rri.res.in/bitstream/2289/2042/1/1920%20Nature...

his fundamental thesis/analysis is that the way the mridangam is built is special in that produces harmonic tones (integral multiples of frequencies) which is highly unusual for drums therefore giving it the ability to sound uniquely special, accompany vocal well and to be played in a smaller, softer setting.

A good blog delving into all of this including some cool youtube videos at the end on wave spectroscopy demos using talcum powder (related to raman) are at https://croor.wordpress.com/2010/11/10/cv-raman-on-drums/

A longer version of his paper from proceedings of IIS published in 1934 is here:
http://dspace.rri.res.in/bitstream/2289/2047/1/1935%20Proc%2...

Figured some of you would be interested in this.
That's one of the things you really have to accept if you want to lose weight - yes you will have to eat less, and yes you will feel hungry a lot.
Yeah I agree the symbolism is great
Right, you're absolutely correct. I actually "get" inharmonicity, I think lack of sleep and the fact that tuning and the imperfect interval of an octave comes into it (I didn't know that tunings were actually shifted around inharmonicity) made me start thinking about JI/ET.. how embarrassing.
I'm not who you asked, but...

I lost 55 lbs and have kept it off for a year now.

It's a constant struggle. If I stop watching what I'm eating, I'll start overeating immediately and start gaining weight. I went to a wedding a week or 2 ago and gained 5-7 lbs. Watching my diet since then, I've dropped most of it again. If I hadn't watched it immediately, it would have stuck and I'd have a hard time losing it again.

I'm very careful about what I eat for breakfast and lunch, to the point of almost always having the same thing. Dinner is very varied, but I still have to watch things or I'll go overboard.

I eat burgers, Mexican food, Italian, pizza, etc etc... But I do not eat dessert. I've found that there's no way to avoid gaining weight if I eat any dessert at all.

To deal with my sweets craving, I drink diet sodas (they've improved a lot lately) and Tic Tacs.

If I really need a snack, it'll be peanuts and pretzels. They're high in calories, but no sugar.
https://arstechnica.com/gaming/2015/11/ars-benchmarks-show-s... Compared to windows .
Parts availability, right to repair, etc. A lot actually.
> Calories in - calories out = fat accumulation. It is literally that simple.

It's literally the first law of thermodynamics.

Everyone tries to over complicate things, but the reality is if you eat more calories than you burn, you will become fat.
This happens a lot in data science too. Interviewers will ask the most esoteric and difficult questions they can come up with, and then half the time, if you get the job, you discover you're doing nothing but linear or logistic regression.