skysight-inc/HackerNews huggingface dataset:
Not an expert in the field. But I liked Centsov's theorem (when a metric comes from IG in the discrete case). I have not found a similar theorem for the general case. Amari's book is hard to follow. There is a serious lack of pedagogical intro to the subject, something like a starter : The main ideas + achievements of the theory + how to use it. There is something in the theory very deep but Amari just scratches the surface.

Can you imagine if GR metrics come from IG?
We detached this subthread from https://news.ycombinator.com/item?id=13248599 and marked it off-topic.
Decompiling SCI byte code – part 1
I wondered what you meant about dismissible recommendations and the X button... then I realised that isn't an option in the YouTube smart TV app, at least not that I can see. Much of my YouTube watching (especially while subscribed to YouTube Red) was happening on my TV through the Smart TV interface, not the web browser or phone apps.
We've banned this account for violating the site guidelines.
Personal attacks are off-topic regardless of how someone sounds. Please post civilly and substantively, or not at all.

https://news.ycombinator.com/newsguidelines.html

https://news.ycombinator.com/newswelcome.html
>Imagine that planets orbited in randomly selected geometric shapes, and we happened to be on the only known elliptical one, giving us the conditions required for life. Would this lucky fact require explanation?

No more than the existence of a planet of the right size at the right distance from the sun. You still have physical laws which determine what's possible, but they probably won't (and, in fact, don't) provide a complete explanation.

The weakest form of the Anthropic Principle is uncontroversial. For example, we can use it to conclude that physical laws which don't permit intelligent life to evolve must be wrong. Can we use it to rule out physical laws which don't entail the evolution of intelligent life? I would argue yes, but that doesn't require any fine-tuning of dimensionless constants: an infinite (e.g. Einstein-de Sitter) universe, or Everett's Many Worlds interpretation of quantum mechanics would entail it, given its possibility.
Is Your Chatbot Ready for Prime-Time?
"all animals are equal, but some animals are more equal than others"
>it's extremely unlikely to be born at the first 100 years (0.00005 %).

similar example - throw a coin 21 time and record result. Now look at that recorded result and behold how unlikely that result is, like one in 2^21 (0.00005%), yet you got it despite the odds :)
The basics of imaging require a certain number of elements. The acoustic window must be a certain size for the application, the elements must be smaller than a wavelength to avoid grating lobes (0.5 wavelength for perfect phased arrays in that regard). Divide one into the other, and you get a number of elements that's usually between 100 and 200.

On what basis do you make your statement that this is too many elements? IMO implies opinion, do you have any facts or physics to back up your statement?

Laws of physics do not change with time.
> barely put in an 8hr day.

That should be everyone.
Pointless article. Sounds like an idea hatched over breakfast and published before lunch.

Profile information was supplied voluntarily by people signing up to FB. That it "might" be used in the future in some way approaching the author's alarmist views, is not a good reason to go around now demanding deletion of specific profile information.
Pretty good summary of what I said, thanks.
Please don't be uncivil, which this is.

We detached this subthread from https://news.ycombinator.com/item?id=13248453 and marked it off-topic.
For the interested: take `B` to be the matrix minimizing `(Y - XB)'(Y - XB)` (the least squares aka the "best fit"), then `B = (X'X)^-1 X'Y`.

Proof: Since `B` is a minimum, the derivative of the expression minimized wrt `B` must be zero (the "derivative" is taken in the matrix sense here).

0 = d/dB [ (Y - XB)'(Y - XB) ]
= d/dB [ Y′Y − Y′XB − B′X′Y + B′X′XB ]
= d/dB [ Y′Y − 2Y′XB + B′X′XB ] Y′XB and B′X′Y are just scalars :)
= − 2Y′X + 2′X′XB

Solving for `B` you get the result.

[1] https://isites.harvard.edu/fs/docs/icb.topic515975.files/OLS...
We recently revamped our in-house deployment process of GitLab, and while we are certainly addicted to Docker Kool-Aid, the Docker image for GitLab just didn't do it for us. This is a few months ago, so my specifics would be a little rusty, but I remember it simply not working, spam-logging errors that didn't help me, and personally I find Docker images that try to run many-multiple applications inside a non-preferred design anyway. Contrasting that, the Omnibus installation worked absolutely without a glitch, so we went with that. Loving GitLab, though!
The Scientist and Engineer's Guide to Digital Signal Processing (1997)
All kinds of embedded devices have updates without microkernels. It's more of the ability to restrict and/or write to flash in various contexts. Far as manufacturers, there's been many to offer secure servers (eg web, DNS), routers (eg GENUA on OpenBSD), firewalls (Sentinel on INTEGRITY), mainframes (Burroughs MCP), fault-tolerant (NonStop, 1802), safer CPU's (eg Java processors), and so on. It kept showing up so long as there was potential demand plus some company willing to put forth effort. Simplest is a few engineers with a background in INFOSEC & networking just making a networking products while doing what they can on sane, base features and security updates. Would go a long way. Meanwhile, separation kernel vendors of products like INTEGRITY-178B or Lynx license RTOS + communication stacks for things like routers starting around $50,000 for OEM license with Linux VM's for stuff. The big companies cranking out tens of millions of dollars in insecure routers could definitely afford that. It's just apathy. ;)

"we just don't have a lot of Ada, SPARK, Rust programmers in the world"

Sounds bright until one remembers almost every significant market in this space is an oligopoly where there's only a handful of companies. Profitable, too. They could split all the Ada, SPARK, Rust, etc programmers while still making plenty of money and getting results. Worked for companies using Ocaml (eg Jane Street), Haskell, and even Prolog. Those sorts find they get better talent when they ask for uncommon, tougher stuff.

"ISPs already have the expertise and the infrastructure to deal with them, once it's going to cause too much problems for the quality of their service. I've witnessed this myself."

Didn't stop most DDOS's from doing their damage at all. Took many players working together. Recent one had a mitigation vendor straight-up dump Brian Krebs. The problem being as easy as you describe wouldn't have such results. It's either hard or they don't care so much.
> Is there any empirical evidence that favors classic black holes over gravastars

Yes.

http://journals.aps.org/prd/abstract/10.1103/PhysRevD.94.084... (preprint: https://arxiv.org/abs/1602.08759)

So you're still left with gravastar models that can co-exist with black holes.
There's MessagePack[0], which serves basically the same purpose a binary version of JSON would. It came up recently in an engineering article Uber posted.

[0]: http://msgpack.org/
OpenVPN goes over TCP port 443, making it look like bog-standard HTTPS traffic. Unless the country you're in blacklists entire VPN IP blocks (not particularly useful, they rotate all the time), it's already unblockable, unless they want to block ALL https traffic.
Or people just use their phones instead but the atmosphere is somewhat poisoned. :)
HTTPS stops interception.

But, sneakernets are relevant because the internet is slower.
It looks like an equation, but it's really almost a Y combinator, almost in Haskell:

y f = f (y f)

Though this won't exactly type check, it's a pithy reminder of what I found so powerful about functional programming, which is that _any_ repetition in the code ought to be something you could factor out. The Y combinator shows you that _even the idea of a function calling itself_ can be factored out. It's hard to imagine you would really ever be forced to repeat yourself if this can be factored out.

Of course that isn't the real point of the Y combinator, but this thought, this "equation" completely changed the way I think about programming.
If you're going to use the Concorde for a speed test then you might as well also test the SR-71. For..er... science!
We've banned this account for trolling.

Please don't create accounts to break HN's guidelines with. We're hoping for thoughtful conversation here.

We detached this subthread from https://news.ycombinator.com/item?id=13247575 and marked it off-topic.
This article took almot 45 seconds to load. Reason is I had the medium app installed.

Just uninstalled that and it loads within 10 seconds.
Do you have citations for this?
> I can't imagine a single person whose life would be better in any significant way with an extra $100.

The fact that you chose to make this argument demonstrates you are using your evolved utility-heuristic hardware and not any sort of rational approach.

What you are probably doing is doing is clamping the utility of $100 to zero ("not significant" is the key concept). Then your brain, which is already bad at multiplying utilities, multiplied roughly zero by ten million people, got roughly zero, and then you made this comment.

Actually, it might not have even done that last part. It sounds like you jumped from "$100 is basically nothing" to "might as well not even consider the number of people gaining utility". It's a good effort-saving heuristic.

So that's the first problem with your argument; it's wrong from a utility theoretic perspective. It doesn't matter if the per-person amount is small. You have to multiply it by the number of people being affected (and your utility function's multiplier on their utility function).

The second problem with your argument is that you're making sort of a fallacy of composition. It's true that $100 isn't much in the grand scheme of things for an individual. But all the utility you ever experience in your entire life is just the sum of lots of (arbitrarily) small utilities. You gain almost nothing from any single bite of food, but it would be wrong to use this fact to claim that you don't gain anything from eating. Even if Google or Apple or Costco or Toyota have individually only contributed a few tens of thousands of dollars of utility to my life, their collective contribution represents the total utility I get from modern industrialization, which is very large. Similarly, if 0.01% of a population 10,000,000 can provide an "insignificant" $100 of utility to each person in that population, that's $100,000 of utility per person. For modern software, where marginal costs are negligible, we get incredible economies of scale.

Facebook and Google reach billions of people, providing at least tens of dollars of utility per year (probably more like hundreds), which translates to trillions of dollars of utility over decades. That's probably more utility than has ever been gained from charity.

At bulk scales, like we have in today's society, the kind of analysis your brain does by default doesn't work. It gives the wrong answer, which is why people think it's better to help a small charity case than do something that's mildly beneficial for a huge number of people.
We detached this subthread from https://news.ycombinator.com/item?id=13239790 and marked it off-topic.

That comment started the off-topicness by indeed breaking the HN guidelines, but the rest of the subthread went back on topic, or at least avoided downvote derangement syndrome, so I've left it intact.
Primer (film) (2004)
How to Create an Android App Using React Native
Looks like Google Keep.
And yet fertility rates are declining in many nations. Science fiction often takes current events to their extreme outcome for the sake of social commentary (Black Mirror being the latest example).
I just started making a few YouTube videos. I have very few viewers and I haven't advertised at all. This lets me see how the numbers add up. For one thing, it is obvious that they don't add up properly.

I live in Japan and after I upload a video I watch it once -- all the way through, just to make sure there was nothing strange happening when it gets re-encoded. I will go back to the video to respond to comments (err... one or two comments).

My brother was in Saudi Arabia. He was nice enough to watch my videos. Once each, all the way through. He never sent any comments.

Result: 39 views in Japan and 35 views in Saudi Arabia. I can say with almost no uncertainty that these numbers are incorrect. I don't have any other viewers in SE asia or middle eastern countries. Whatever is happening, these are not normal views.

If YouTube are improving this situation, then that's good. But I have almost no faith in their analytics.

Edit: Is Google reading??? Just checked again and now I have 27 views from Japan and 4 from Saudi -- which is probably about right (if you consider that every time I respond to a comment it counts as a "view").
I think it is usually better to get one's nutrients from food, but Niacinamide is one supplement that I take regularly. A friend finds that it reduces her need for tobacco.

There are lots of nutrients in the foods that aren't in supplements.
Not sure if that's the case,

[Spoliers!]
###########

It's been a while since I've read the book, but if I recall correctly nukes are used against Venezuela when they disagree with launching supplies to the Ark project. There are further hints of looming conflict (e.g. Ivy's fiance mentioning the nuclear sub he was in was on high alert).

I also believe there were numerous delays of supplies and disagreements even within NASA / the U.S. space program. Not too certain of all the world powers cooperating, although admittedly their cooperation on the Ark project at all may seem odd, but doesn't seem out of place with the status quo and how world powers "get along" in regards to the ISS?
>The new railway minister has been working relentlessly on improving the situation..
>Trains are being run on time...

Really? I our state the rails are not even well maintained and there frequent concerns being raised about the poor maintenance of the rails themselves. And what about the increasing incidents of train accidents and derailments?

And trains running on time? I think it has worsened in quite recent times. Things were a little better a while before. Now 30-45 minutes of delay, even in trains starting from near by stations are regular.
Or watch this video:
https://www.youtube.com/watch?v=Y_Ac6KiQ1t0

One of my favourite math lectures.
As a linguist, I really appreciate reading/hearing people write/speak in a non-Native language, as the constructions are really interesting, and while I don't intend to laugh at anyone, sometimes amusing:

> Perhaps I am the one who possesses the face image of the most boss in the world. I must have it more than his parents.

:)
I'm using Calendly for now and it seems sufficient. FWIW, the blog post has had ~2500 views so far (thanks HN!) and about 45 people emailed me. 45 isn't a small number, but probably small enough for using something like Calendly. Happy to help/share learnings/collaborate if you want to do office hours as well (I'm leo@susaventures.com)
Amazing now you could watch porn at work!
Had similar experience in SE Asia, you either blind yourself to the rampant inequality or it slowly eats away at you.
1:1 or 1:2 would both be fine. I think this format is best suited for one startup at a time though -- I suspect 20 minutes should be enough to have an interesting conversation about 1-2 things, but probably not 1-2 things about each of 2 different companies.
Buying Silver Jewellery Online Making Your Shopping Experience Easy
Have you responded to the wrong post? None of that has anything to do with what the DNA proves.
and just upgraded to 8.15.1 flawlessly :)
The problem is nobody seems to care. Usually when i bring this up some smartass will show up and tell me you can disable it. Seems nobody that actually uses this shit piece of software ever reads the terms, its very detailed in the fact that disabling disables only a few things.
Euler's equation is cool...
Written properly it contains addition, negation, multiplication, exponentiation, the imaginary unit, the additive identity, the multiplicative identity, the natural anti-derivative identity, and two irrational transcendental numbers in a most compact form with holomorphic continuity.
preprint: https://arxiv.org/abs/1607.00294
We have a great deal of repos on our GitLab private server and even a major upgrade only results in 2 minutes or so of downtime.

What spec hardware are you running this on?
Same! Naiver-Stokes & Lattice Boltzmann.
I just ignored them. Nobody bothered to ask. Seems optional to me.

Also its Skype, Linkedin and Facebook if i remember right. I dont have those.
Del dot B = 0

Gauss's law for magnetism is so simultaneously simple and profound at the same time. It says that there is no such thing as magnetic charge (monopole).
Let's read a Truetype font file from scratch (2014)
Surprised no one's mentioned Bayes's Theorem yet. It's so incredibly simple yet underpins so much of statistics.
Isn't this situation the reason handheld devices were invented?
I'd love to hear his rational as well, in the meantime, here's what I've found:

https://www.elmfunds.com/blog/video-the-most-important-numbe...
That does typecheck though!
Euler's formula. This one formula is the most practical formula I've ever encountered. Once you learn it, you will never stop using it. The Schrodinger equation is a lot of fun, but you will likely stop using it if you stop doing quantum mechanics. Maxwell's equations are beautifully simple and tend to appear in many other contexts other than classical electrodynamics. For example, in the absence of charge, Maxwell's equations describe free waves -- which can appear in many contexts other than electromagnetic fields.
They got fat and lazy. The competition wasn't there previously. Bitbucket, Gitorious etc just weren't up to scratch so Github was a defacto monopoly for cloud hosting of git repositories.

The gitlab came on the scene, shipped a Github replacement and then some. Is shipping features in 6 months faster than Github did over the past few years.

Github have woken up though and started shipping features again.

It's good to have competition. At least, for consumers.
I remember reading that most of the traffic is porn. Not sure if it's having the desired kind of impact.
e=mc^2

Just the fact that energy can be converted to mass and mass can be converted into energy is very interesting
Yesod doesn't prevent all of them. You can use "javascript:" to still do XSS, last time I checked. This is because that kind of content is valid in HTML... but maybe not what you wanted to happen
I have a hard time believing vitamin supplements work that well and multivitamins in particular. You may end up thinking they are effective but you should have to work hard to get there. There are several major conceptual problems with vitamin supplements (this is before we get to multivitamins).

First is bioavailability. The gut isn't just a large database processing engine in which food is disassembled and its constituents simply extracted. Many compounds don't even survive the stomach acids. Different digestive stages extract different components which have to survive intact that far. In addition, some chemicals (vitamins) are synthesized in the body and don't pass from the gut at all (you mention B, which can be the opposite: B12 is synthesized in animal tissue but is not available to the body in that form; eating animals allows the gut to extract it and supply it to cells for use).

In addition, typically 95+% of what you eat or take (yep, those medicines too) is immediately removed by the first pass metabolism, so most of the drug you take are pissed into the toilet. Unless the compounds you eat are structurally appropriate to make it through the gut properly you'll lose them.

But does it matter? The second problem is dosage. You can take a worthlessly low amount or a dangerously high amount of many chemicals: how do you know the ultimate levels of bioavailable vitamin are useful? Studies in this area are largely, at best, poor.

Which leads to the multivitamin itself -- they always promise several X the "recommended daily consumption" but you have no idea what they do in combination, where those recommendations came from (mostly pulled out of someone's backside) and how much ends up usefully in your bloodstream. Not to mention most are not produced under GMP and congress has explicitly removed the FDA's oversight -- so you don't even know if you're getting what it says on the bottle.

Now I do selectively take two supplements: D1 and EPA+DHA. I take them both in an oil suspension (they are oils) and based on some research in German I've read and discussed with my doctors and some specific family history (half of which grew up at a much lower latitude, so I don't synthesize enough D in California). But finding a dose that gave the response we were looking for in my bloodstream was quite difficult and I take about 4X the US recommendation. Even then the data on proper resulting D levels is quite poor.
Wups, I've just noticed myself that this is a repost:
https://news.ycombinator.com/item?id=8753347
This is Placnk's Equation. De Broglie's equation is p = h/λ
Using libtool just shifts your learning some (mild) arcana about how libraries work to learning the arcana of libtool.

A library is not rocket science, and knowing how they work is important to understand how your compiler works anyway.
This is also known as the (Moore-Penrose) Pseudoinverse.
I am curious, have you experienced poverty? I mean "first world poverty", like the kind you bus drives through? I have, and I want nothing to do with it. I certainly wouldn't choose to walk through it again. Have you stopped to consider you're being a bit of a slum tourist, or maybe you have a saviour complex?
What programming language should I learn to develop accessibility software?
I am recently changed my major to computer science and really want to go into developing accessibility software what language is typically used for this? Thanks.
In a real world, you actually want to do this when __anyone__ is passing by. You don't want to be seen as a slacker by your boss, but you also don't want to be seen as a slacker by your colleagues.

In which case, this is actually a much easier problem to solve since all you need to do is detect any motion (instead of all this convoluted--although hilarious--deep learning task).

This is like the story where some government tried to come up with a super high-tech pen that works in the space (because regular pens don't work in zero gravity environment) when the final answer was just a pencil.

So the lesson here is: there are many ways to solve a problem, and if you don't know what problem you're trying to solve and you don't know your customer well enough, you will end up wasting a lot of resource doing something totally unnecessary. (But it was a fun blog post! Kudos for that)
Why can't they provide at least a little bit of information about how it works? All we get is glossy descriptions without substance... "you want this app, it's really good".. but nothing about whether it works offline, what cloud services it uses, or any details about back-ups, data handling or web version, permissions, or anything.
What Is Minimalism?
This is a fantastic book. As a Software Engineer with little background in DSP, this book has been invaluable in tackling DSP-related projects that have come up at my current job. Really pragmatic approach to the subject matter, which I've found can easily be lost in other texts.
Related blog post: http://hackingdistributed.com/2016/12/22/scaling-bitcoin-wit...
>a Haskell script will tend to be substantially shorter than the equivalent Python.

someone offered a counter-example where a JSON parser had more lines of type definitions in Haskell than total lines of code in Python