skysight-inc/HackerNews huggingface dataset:
IEX is not an exchange. It is a dark pool with technology, rules and special order types specifically in place to give large hedge funds advantages over "average" investors.

They still allow collocation, venue arbitrage, and non-human timescale trading. Any electronic trade you could do on any other dark pool you can do on IEX.

The main difference between IEX and other dark pools is that they are owned by hedge funds and they either duped or bribed a famous author to write about them.

[edit] The comment below correctly points out my insinuation about bribery and Michael Lewis is unfair and snarky. I will point out that Michael Lewis wrote a glowing book about Jim Clark a decade ago, who happens to be an investor in IEX, so there is at least the potential for intentional bias.
Reasonable or not, dd and cw are wired into the fingers of almost every vi user, so they will indeed be a major turn-off for many. They are for me.
300kg of fireworks would make one heck of a display
Every time I read something about OS/2, I'm just waiting to see one of my old friends from IBM Boca Raton names pop in there. Man I loath of those days again. What a great bunch of people to work with. I loved it there and to this day LOVE OS/2.
I'm positive in the exact opposite direction, so we're at an impasse.
I'm pretty sure I poked in those very files, and some of them gave me the impression that they are generated by a script (hence "don't touch this"). Some of them gave me an impression they are read by some undocumented script. I still don't know what script.

But it's been a while.
Hmm, I think that is a different problem (too many different variables).

It involves the rights and obligations of a parent, for one.

I also agree I might have chosen differently if it were my son.
The power consumption of a bulb is not a measure of its brightness - due to its low temperature, this bulb's black body spectrum is shifted much further towards the red end of the optical range than a common 100 W bulb, which means that a larger proportion of its output is in the infrared, which is invisible, and much less of it is in the green, which is where human eyes are most sensitive. So, you'd need a lot more than 25 of those to achieve the same brightness (which still would not give you the same light color, though).

The only reason why you can somewhat compare modern incandescent bulbs by power is because the manufacturers have standardized on specific operating temperatures (the "cartel") - however, that only works for a given type of bulb, not between a "normal" one and a halogen one, for example, much less for the centennial light.

Still, all that indeed makes for even less reason to be impressed ...
Google cache, since the site seems down right now: http://webcache.googleusercontent.com/search?q=cache:http://...
> Extreme moral dilemmas are supposed to touch the very core of our moral being. So why the inconsistency?

This question doesn't seem scientific.

I would say, "We didn't predict this outcome, what's wrong with our theory?"

If you're observing something in nature, in this case people, calling nature inconsistent doesn't make sense. Nature is consistent. Your theory has problems if it calls nature inconsistent.
Hi! Anybody have some sources? I want to touch this method =)
This 3D reconstructions are the best material for the face recognition!
Why isn't this just given to amsat.org for a nice RF transponder? Could be the location is non-optimal for solar / antennas, but ...
But they have put it at risk. You don't think they'd demand (and get) more salary if they didn't get carried interest?
It's due to different keycodes for the onKeyDown/onKeyUp and onKeyPress events, test here: http://www.asquare.net/javascript/tests/KeyCode.html
Neither of the two languages a bilingual person speaks is considered foreign. Otherwise the person would not be bilingual. What would be the result of such a study? Keep in mind that in linguistics the difference between being a native speaker and having learned a language after the critical period is considered huge.
Prediksi-skor-crystal-palace-vs-newcastle-united
Is big data dead? The rise of smart data
Marijuana should not find its way to schools at least.
Bottle-sized greenhouses.
A) these microwave towers are mainly on routes to/from commodities exchanges that have equities derivatives and the equities exchanges where the underlying equities are traded, or between 2 different commodities exchanges. Insider trading, you will find, is much less regulated in commodities trading as there is all manner of information asymmetry built into the market, in fact one of the purposes of the market is to discover a valid price in the face of this information asymmetry.

B) Buying extra time via technology is as old as trading. If you read the article, or taken an architectural tour of the CBOT building in Chicago you will have noticed that one of its main design requirements was to house telecommunications gear.
That is a pretty bizarre argument. I would conclude from init and Xorg rarely crashing that it is possible to write a reasonably stable daemon, and that perhaps it's not a good trade-off to introduce a lot of complexity into those daemons to be able to recover from crashes.
Show HN: Bouton – Bootstrap Button Pack [Free Download]
As an "oldfag" I too will be departing.

I'm not pro gamergate discussion, but the level of censorship recently is too high to ignore.
I'd say the target audience for PureScript is probably not "everybody coming from C, Java or PHP", but people who appreciate stronger type systems, and possibly people with a Haskell background.

There are already several JavaScript flavors for the audience you mentioned.
Despite English not being my native language, I would object to pushing the man in front of the train. Does that mean my mastery of English is sufficient that it can touch me on the same level as my native language?
Every single IT guy, every single manager …
Trying to create a local mesh-based wireless network in Buffalo, NY. Advice?
No they aren't. One of the largest and hands-down most respected mutual fund companies in the world, Vanguard, the company that inspired the "Bogleheads" movement, publicly stated last year that HFT had helped them, by driving down spreads.

The fact is that credible pension funds don't make their money by competing with sell-side firms. When your only job is sporadically making large block trades, you're happy to see spreads competed down as far as they can go. You don't care which market makers are winning the race to provide the cheapest possible liquidity.

Claims that buy-and-hold funds are victimized by HFT are hard to square with what Vanguard said, and with the logic of how automated trading works.
I've never seen this clearly defined. At the root, criteria for engineering come from the intended uses. If the product is meant to last for 5 years and you design the product for 50 years, you've probably over engineered. If the product is meant to last for 5 years and you've designed for 6 years, you MAY have under engineered, given a statistical variance for failures over time (e.g too many failures happen at 4 years instead of 6)

So, an academic answer, it depends :)
What year? 2004 here
If you are interested in the topic of HFT, 'Flash Boys' might literally be the worst introduction to the industry you could read. It is rife with bias and technical incorrectness. Worse than that it is disjointed and plain poorly written (and a fair chunk of it appeared in Vanity Fair which is available online).

I have my own problems with 'Dark Pools' by Patterson, it does have some technical inaccuracy, but on the whole it paints a picture that is closer to reality and is still readable.
> Rigged? That's what the big players in the HFT field are doing by using the various tools available (near-location, co-location, fast networks, fast custom hardware and lately microwave networks).

I can't personally afford to have a Bloomberg feed in my living room to trade off of. Why is this any different?
I agree that the article is not very good, but this comment misses the point.

If I see a brick building in the street, I don't know how it has been done, but I can make reasonable guesses on what's most probable, based on the apparent age of the building, maybe I passed by a construction site where a similar building was being built, I can go to the library to check architecture books, I may try to ask a construction worker...

Do I know how that particular building has been done? Probably not, we haven't seen it, but I'll get a good idea on how it may have been.

Of course, this doesn't mean that it's impossible that an alien ship came in the night and drop the whole thing. It's just not a probable explanation.

We know a lot of things about the pyramids, given that it has been a while. But we know similar constructions, how that evolved, some documentation, materials, etc...
Do we know for sure how they were build? Not really. But we know a lot about what are the most likely ways (and they don't include aliens or lost civilizations). Is this subjected to revision? Of course... Is "We just don't know" a good description? I don't think so.
Cielo and Aviat have targeted this market.
Why You Think Your Phone Is Vibrating When It Really Isn't
Compare the article with any of the papers it references. This is pure fiction. All papers clearly state the sign language in question shows emergent regularities which clearly means that it is on its way towards duality of patterning. It is special since it is a great opportunity to study the phenomenon as it happens.
This is a shallow history with a lot of drama.

http://www.lurkmore.com/wiki//b/day

And instead of this 8chan, it was 7chan that everyone ran to. This was 8 years ago now, and the end of 4chan was proclaimed. 4chan was not over, /b/ just got rules. This is not new.
Correlation vs.causation. Here we go again ...
High Frequency Trading should have been called Low Latency Trading.
I couldn't believe it when a colleague mentioned the other day I could open a video in Photoshop. I was convinced he was joking... but sure enough, you drag one in and get a timeline where you can scrub about it. I was shocked. Surprisingly since then, this feature has actually become quite handy for me in certain situations.
A New Business Direction for China's Huawei
Sorry, Kids, Changing the World Takes More Than a Killer App
Again, we're not talking about getting carried interest - we're talking about the taxes on that carried interest. They put the capital at risk, but this is no different than any fee-based service, thus it is income rather long term capital gains.
Tiger Attacks a Person on Elephant
I'm usually on /fit and noticed a lot of bitching about janitors deleting FPS (fat people stories) threads. You can not moderate 4chan. People will not stand for it. They tolerate the deleting of child porn because everyone agrees it's illegal. That's about it.
Weight, though...
I have a theory about why that is.

In the book "Thinking, Fast and Slow" there are a number of experiments described that show that human thought can roughly be separated into two systems, one of which is intuitive, fast, heuristic, and low-energy, and the other which is rational, analytical, uses more calories, and is only engaged when necessary.

We use the first system most of the time, and only use the second system when we really need to. They found that when people were given something to read in a smaller font, their responses to it were more rational.

This might be the same effect - if the second system is already engaged due to the difficulty of understanding the other language, the result is a more rational response.

It's a very interesting book, and well done. It's a bit long, but thorough. http://en.wikipedia.org/wiki/Thinking,_Fast_and_Slow
So it seems inevitable that we'll get gravity trains some time soon as a HFT side product?

http://www.uh.edu/engines/epi2703.htm
Free Isn’t Enough – What do we do when music has a negative value?
How Node.js is changing the way we use JavaScript
My guess is that they're having a hard time coming up with something that has a similar density. Most ideas just aren't heavy enough in that volume to act as counterweights...
Here you have a benchmark based on the MovieLens database:

http://nbviewer.ipython.org/github/Blosc/movielens-bench/blo...

The results are explained here:

http://www.blosc.org/docs/bcolz-EuroPython-2014.pdf

and, more in-depth here:

https://python.g-node.org/wiki/starving_cpu
> If a browsers works fast and doesn't leak memory, one shouldn't care how much memory exactly is used.

That's a big assumption. Realistically speaking, there's only FF, Safari, and Chrome. FF leaks like crazy (sometimes on it's own but sometimes it could be a plugin). Safari doesn't support all the plugins I use and Chrome may but I'm don't like their dev console layout. And if you don't see how much mem is being used, you have no way of telling if a newly installed plugin just caused a memory leak (unless it just totally prevents you from using the browser).
Debunked. (Although I can only find this in Dutch at the moment.) https://translate.google.com/translate?sl=nl&tl=en&js=y&prev...

Original Dutch: http://www.dayralbarsha.com/node/184
Not sure this is a great topic for HN - it's barely relevant and a total clusterfuck in an area where we don't exactly have a great record of meaningful discussion. Also, some of the historical information is wrong - Zoe Quinn (probably) didn't sleep with journalists for coverage, and a lot of /v/'s anger came from revelations about gaming journalism that predated the ones invloving her. (That is, the reason /v/ was so willing to believe gaming writers were giving coverage for sex was because they already distrusted them due to incidents like DoritoGate and Jeff Gerstmann's firing.)
Well, they will help them build capacity to protect forests, and prevent new logging licenses to be granted, as well as place more forests in a "protected" status.

It's not like they just ask to stop and give them cash, like the headline suggests.
How I Fixed Messages on My iPhone 5S After Installing iOS 8
Every trade that happens in every market in the world can be viewed from a game theory perspective as adversarial. In the absence of other outside factors each trade in isolation is a zero sum game, that is 1 counter party will make money on the trade while another loses (at least in the form of opportunity cost). In this adversarial encounter it is expected and encouraged for all counter parties to strive for unfair advantages. Some do this by using vast swaths of overworked and underpaid ivy league grads to do market research for them. Some do this by using massive amounts of leverage others do it by being fast, some use illegally obtained proprietary information and still others do it via mobbed up boiler rooms. Some of that unfair advantage we have deemed illegal and others we have deemed legal. The point is, the existence of an advantage in a trade is a necessary condition for the market to operate correctly, not evidence of it being rigged.

You will notice that the "big" players in HFT are much smaller than the people they are taking advantage of, the giant hedge funds. The HFT competitors have access to the same technology, technologists, exchange access and microwave networks. Further, they have better access to capital and legislative power, not to mention access to best selling authors.
For context, this is about 0.00021% of the entire norwegian reserve [1].

[1] http://www.reuters.com/article/2013/03/24/us-norway-oilwealt...
A related story: back in 2012, Equador had asked countries to pay $3.6 billion for them not to drill under the rainforest: http://www.scientificamerican.com/article/ecuador-asks-world...

It wasn't successful: http://www.theguardian.com/environment/2014/may/23/ecuador-a...
Nope, they would not attack Apple, Google or Microsoft, same way why you are scamming weak people.
Big company would send people who don't have sense of humor once and "Rotatable" would be gone. You attack new or not that big organization which would be "scared". Like "Hey, they are suing us, we better pay before they ruin us, and we just got money". Anyway I see this kind of thing everywhere, most of people also rather to pay ticket or fine, even if they could argue, than go to court because it is more of a hassle.
I was thinking it was a good background until the author started stating their own personal stance related to GamerGate and Quinn. That subject could have been brought up without stating their own personal opinion of it.
Google Watch That Can Create a Virtual Input Area Around Your Wrist
It was at first. But it didn't stick.
A Site That Teaches You to Code Well Enough to Get a Job
I see no problem with what's been happening on 4chan. Sharing the plundered private photos and videos of celebrities is a sickening invasion of privacy, and invites a whole host of legal trouble for moot. Whatever these anons think, Christopher Poole cannot stand behind a veil of anonymity; he can and will be held accountable for illegal activity on his site. Especially since it has spawned things that grab the attention of authorities, like Anonymous, Lulzsec, and "the fappening."

As for #GamerGate, I think the whole thing was blown out of proportion, but with anons (and redditors) doxxing anyone they thought was involved, I can see why moot might want to nip that in the bud before any serious harm came from 4chan (which is, again, his site to run as he sees fit).

If anons just want a place free of moderation to share CP, pilfered nudes, and dox, then maybe there will be an exodus. All I can hope is that if they leave, maybe there will be some technology on /g/ again.
Related to the date, its interesting watching the interaction between frontend apps and the backends.

You can more or less vendor lockin your backend, for a very short time, if you have a decent frontend app like chanu. That is being worked around extremely quickly and actively, and that likely explains the whole oct 1st thing.

Compare this with the schism of slashdot and soylentnews. There is no dominant frontend for slashdot other than chromium so the schism happened a little faster.
Well, I think Architecture Astronauts are generally a huge nuisance because they can sell work so well. Yet they so often simultaneously produce these unworkable, purely conjectural designs that so often do not connect with real users and their needs/wants. And how many times have I heard "all the knowledge about the system is locked up in his head"? Tough to keep the bile down sometimes.

Heck, I'm up and working at 4am today because of an AA and his stupid "elegant" data design that is "set in stone" that requires me to provide reams of documentation. I have to make up for the fact that my data is wholly incomprehensible without all kinds of independent documentation. This is all work the AA should have done himself, but instead all he shares are these idyllic, sophomoric examples that NEVER appear in the real world.

It's rich that the system is thought to be "elegant" because one major aspect is simple (there are only something like 8 fundamental data types in the file format to describe the whole system). Elegant? No, perhaps "convoluted" describes it better, maybe "rambling". Data files tend to be veeeery tall and veeeery skinny. Sigh.

So I'm working up to a huge real-world demo and I'm looking forward to canvasing the team in order to create a crisis. "Looking at this realistic example and seeing how much work it took me to get here, what are your impressions of the file format?"
Quite dangerous what this technology will mean in the future, they could manufacture evidence against you, publish it, and then let the masses lynch you.

I think this is what happened to the recent decapitation videos, they were reconstructed from home videos.

IMO the videos with the people dead in the floor are true, but the videos where they talk are staged.

Today we know there was a CIA team whose job was faking videos of Osama Bin laden:
http://blog.washingtonpost.com/spy-talk/2010/05/cia_group_ha...

Remember Osama Bin Ladem appeared and disappeared according to US army interest at the time, finally ending in very strange circumstances(and being buried on the ocean, not letting anyone else interantionally to confirm(by DNA) he was Osama).

For me it is staged because current technology could synthesize a voice only if there are not strong emotions. The same happens with the voice.

With strong emotions it becomes very easy for familiars and friends to notice as people do specific gestures and most of them are not recorded in video.

That people are perfectly calm before dying I could understand, but that they do while saying exactly what their captors want I can't.

Also, before the videos most of the population in UK did not want to go to war, after the videos(with a UK native), most of them support war, quo prodis?
Our New HTTP Client, Light Threads and SSL in Nginx
There is a real problem when discussing this topic that many terms are bantered about without rigorously defining them. Most electronic trading (trading done via computers and computer networks instead of in person) exists on at least 4 spectrums.

1) How algorithmic is it? How much of the trading decision is made by a computer and how much human intervention is there.

2) How often does it trade? Some electronic trading systems can trade thousands and thousands of times a day, while others only trade a few times a quarter.

3) How long does it hold a position and/or leave a quote on the market? Some trading systems are designed to never hold positions and others hold positions constantly.

4) What latency requirements does the trade have from the time the exchange publishes data until the time an order needs to be in the market.

There are electronic trading systems that exist with variables at every end of these spectrums.