skysight-inc/HackerNews huggingface dataset:
If you set your orders and offers to roll over through multiple intervals, you don't need to babysit them.

You are absolutely guaranteed to pay at most what you bid, and to receive at least your reserve price. You could leave them in the system for a thousand years and never be disappointed in your trade.

I can set my bid at what I think a company is worth to me, and simply leave it there until the clearing price is lower.

I would probably set the interval to one hour, with 24 auctions clearing per day, and each tradable item settling at a different position on the clock, so as to not overload my servers at any given time.
Video was shot on 17 June 2012 according to video at 0:44, so strange april fools timing.
I'm glad someone understood the meaning of this article. You nailed it.
I've written about this[1] some time ago. When I used windows 8, was the first time that I had to read a tutorial online on how to perform every day tasks after ... maybe 10 years.

I mean it's hilarious how bad the user experience of windows 8 in laptops with no touch screen is.

[1] http://www.convalesco.org/blog/2014/03/24/microsoft-windows-...
The gentlemen from the NSA will be along shortly to collect their toy. Oh and you've been added to the no-fly list.
WWDC2014
> but their fate is in their own hands now.

You mean US wasted all these people for nothing along with all these american soldiers, while still giving Saudis and Pakistanis tons of money, these folks being the one that helped Al Qaida attack USA (9/11 has been financed by Pakistani's secret services,and it's a well known fact that Saudis finance the most radical islam,the one that calls USA "Satan"...).
Slightly off topic, but wow there are a lot of really cool info-maps on this page. Really enjoyed reading through http://geography.oii.ox.ac.uk/?page=the-world-through-the-ey...
Jennifer, you're an inspiration. I created an account just to tell you that. Stay awesome!
Firework – a distributed, fault-tolerant work queue for Firebase
Back in ye olden times when I was an Informix DBA, we had to worry about stuff like this for storage.

It was always a fight with the storage guys, because they wanted to use their fancy Veritas File System for optimizing disk utilization, and us prima-donna DBAs wanted raw LUNs and allow the database engine to manage our disk, because it maximized our transaction throughput. Some DBAs even wanted whole disks allocated, so they could control where data lived from a disk geometry POV. There were (mostly) valid arguments for doing this, most of which have gone away over the years.

This is an issue like my disk issue -- corner cases that need to be thought about in situations where you are investing lots of engineering effort into your databases. If you don't have a couple of angry DBAs whom you're always arguing with, you don't need to worry about this.
what makes one person a success and another a failure

Why not abandon the notion altogether? This is not a competition.
Kakoune: a code editor heavily inspired by Vim
Can you please contact me or provide me with your email. I'd like to discuss a possible acquisition.
I've had friends experiment with this, and they've reported good effects from taking small doses to help with depression. In small amounts, it isn't as scary of a drug as most people make it sound like. In small doses, its kinda like being tipsy (acts on similar receptors to alcohol), and if you know what you're doing there isn't much of a chance of 'accidentally' going into a K-hole, as its roughly a magnitude of difference between what you need to take for basic effects and a K-hole.
> This is a sincere question, because I really do not understand how HFT "creates liquidity" when they are just buying low and selling high.

It's a complicated issue, but I think the simplified version is: Reduced liquidity results in larger volatility.

Shorting is an easier example to look at: When a stock drops, folks with short positions cover their bets ("I've made enough money off this position, it may be near the maximum I'll make") they buy. Others notice that there is buying interest etc. However, when shorting is banned, those buys do not arrive and you would intuitively expect the stock to drop further before buyers believe there is money to be made. You could witness this dynamic during 2008-9, when the SEC banned shorting of banks.
You're not supposed to see this patent lawsuit settlement memo
Chris, I'd love to see you do a similar article on how human traders come into play in similar situations. Isn't the point of (at least some of) them also that they add liquidity? What makes HFT worse in that regard?
>It is a fallacy to believe that businesses operate efficiently simply because there is a profit motive.

Operating more efficiently is exactly what is destroying jobs. Middle managers are an easy target but I fail to see how there are enough of them to move the needles.
The insurance company knows your boyfriend smokes now. Expect higher rates soon.
In what sense? Do they stop paying and keep using it or stop paying and go back to getting food and water the normal way?

Most of the developed world already has access to potable water for very low prices.

Does this machine need to be one per person or can it be scaled to have one giant machine feeding a bunch of people?

If the machine can be taken apart and replicated then Mr. Myrne is going to be sol.
The biggest advantage seems to be in the iOS account. You can test and even distribute Mac programs with out being a member, but for iOS you can't even test on your own device with out an account. You don't need a Mac account unless you want to sell in the Mac App Store
Go on then, I'll have a go a reading too much into the artwork...

Looks like a flat version of the Apple TV intro video.

https://www.youtube.com/watch?v=dFnlKtwIrFg
Right, and there wasn't a community on Google Video, there was (and is) on YouTube.
Posting on Craigslist and some random websites is not an adequate defence against Theft By Finding charges. The person that removed this clearly valuable and not marked as abandoned item needs to immediately report it to the local authorities, and make arrangements to ultimately hand it in.
If they don't unveil a larger iPhone, I'm going to buy a Galaxy the second that conference is over. They've been so far behind the curve with respects to screen size -- almost every other major contender is shipping larger screens. The norm has changed.
Front-running[0] is where a stockbroker abuses the relationship they have with a client to place their own order in front of a client's order, because they know that the client's order will move the market, and that subsequently they'll be able to close their own position at a profit.

Having a speed advantage over other market participants and using that advantage to pull your quotes on another exchange is not front-running! It's just sensible market-making, of the kind that has been doing on for hundreds of years. It's no better or worse than sending a pigeon over the English Channel in 1815[1], or using the Transatlantic Telegraph to outpace ships in 1866.

Also, shouting "straw man" is not actually an argument.

[0] http://en.wiktionary.org/wiki/front_running#English

[1] http://en.wikipedia.org/wiki/Nathan_Mayer_Rothschild#Legend
Chris, can you at least read the NYT excerpt? I have to agree that your post does little to settle what may or may not be controversial, and it would be interesting to hear an informed response.
Unfortunately, a traditional US retail investor does not have the flexibility described here. Lewis describes Electronic Market Makers (EMMs) and Payment For Order Flow (PFOF) - under these models, your order never actually reaches a market. It is routed directly to a market making firm (usually Citadel, Knight, Pershing, or Getco) that fills the order immediately if the price is marketable and then trades out of the position later. This indirection makes the whole discussion around your position in the order book somewhat moot.

It is important to recognize that under Reg NMS the market making firm must fill you at the prevailing market price (the NBBO). While they technically could sweep the market to move the market price before filling, this almost never happens for a retail order since they are so small.

For this reason, the whole discussion around HFT "front-running" isn't very topical to the retail investor buying individual stocks and it barely affects the cost of execution of funds ($0.43 per $10,000 notional value traded according to [1])

In summary, the people fanning this flame are not trying to protect retail investors... If they were, they would focus on the larger scams on the street (exhorbitant management fees for actively managed funds, for example)

[1] http://papers.ssrn.com/sol3/papers.cfm?abstract_id=1928510
"We already regard some profitable activities (e.g., slavery, child labor) as unacceptable, so there's no reason a priori to rule out considering whether HFT falls in the category of "too detrimental to society to allow""

I agree, I think a robust conversation about the pluses and minuses of electronic trading are of value, and there is nothing sacred about electronic trading activities that means they are a natural right. That conversation needs to be an informed one though, and discussions about HFT never are.

"Likewise, the more esoteric forms of finance (CDS) and the people who made them and continue to game the system greatly contributed to the recent recession without suffering any of its ill effects."

This is a point that is most aggrevating about the narrative that Michael Lewis is pushing about HFT. The people being "hurt" in his hypothesis, are in fact the people who create esoteric forms of finance. The big institutions are upset by HFT because it has cut into their profits, not because it is unfair.

"And furthest down the chain of societal damage are photo sharing sites and chat services, which mostly just waste time and supplant the revenue of film/phone companies.
If you're implying that considering HFT's societal worth is as silly as examining photo sharing services, you're mistaken."

WhatsApp was sold for 19 billion dollars. That is about exactly what the entire HFT market was worth in it's very best year if you believe very inflated stats.
The trade embargo is the best thing that happened to Cuba's government; it gives them the perfect excuse for the economic failure of comunism when actually they can trade freely with many countries.

Exports: Many non-US countries can buy their sugar and tobacco beyond their production capacity.

Imports: most US goods are a luxury when you can import food from latin america and anything else from China.

So it doesn't make sense to say that the cubans are suffering because they don't have McDonalds, Coca-cola, Zara, Adidas and Monsanto seeds or because they don't have a market for exporting their sugar and tobacco.
"If not work - what is important?"

Family, traveling, learning things, playing sports, spending time with friends, love, and more generally having fun while we can.

"what makes one person a success and another a failure"

That's quite a binary view of the world! why do you want people to be either a success or a failure? even if that's you want, work is certainly not the only metric for that.
Isn't it more likely that the rock fell out of their plane?
Retail orders are generally routed to markets using a SOR and do not overage 100% of the full order. There are latency differences between exchanges / ATS'. If you are very fast is possible to post passively on multiple venues and exploit those latency differences to assume if you see a small ping on market x there is more behind it. You can gain book position and the spread with this information, if you are fast.
It's a toolbox, each gem has unique strengths and weaknesses.

If using ActiveAdmin, it's likely that large projects that include external apps already require simpleform and/or formtastic in addition to form_for/formbuilder.

Whatever works best for a given situation / is easiest / most maintainable gets my vote.
I think that even if the other developers are not familiar with SQL specifically, you can show them the query you plan on running.

I׳ve found that the fact that you need to explain something to someone makes you double check everything, and reduces the chances of screwing up.
Even if they׳re not familiar with SQL, they can still easily understand the logic behind the query.
Is there any evidence that sentiment analysis scores are correlated to anything we already know about emotions? I find the whole concept to be extremely speculative and dubious.
I don't know really. Since Balmer kicked in, Microsoft's decision making process is a sort of a mystery. Can a company with so deep pockets, so well establish fail consequently?

There are still around people running Windows XP because they consider them superior. I never had issues with Vista or 7 (although never used them as a desktop), but Windows 8 are a new low...
AngularJS: Refresh or Die
It never once had a failure in flight, except for the short in Apollo 14, which they managed to hack around mid-flight. Cool story: http://www.ibiblio.org/apollo/#Final_exam_for_the_advanced_s...
I am a HBO customer. And GO makes it that convenient.

Eff them for giving an easy way to pay for great content?

Game of Thrones is worth the price alone. Most of their library is available on-demand. And they've transitioned to where Netflix wants to be...in ten years.

I don't see much of a problem.
Exactly. This article is written for "homo economicus" not homosapien. It assumes people are perfectly rational then argues that a technique built to overcome human limits on rationality and processing ability is suboptimal.

Economics at its worst. It starts by assuming the cow is a sphere.
The fluff is actually worth watching as well. The guy is clearly taken back by this experience.
> Odds of a meteor are absurdly really low

Odds that I win the lottery this week are absurdly low. Odds that someone will win the lottery this week are quite high.
Ah, technically correct.. the best sort of correct.

It seems to me though that a meteoroid that has evidently survived reentry but has not yet reached "the surface" properly might be something of a previously unhandled edge case. Normally you would avoid naming meteoroids to be meteorites until after you have found them safely on the ground because it is possible that they burned up during their observation, but this one was observed well after the point where it may have burned up. Also from a delta-v perspective, it had already performed the majority of its transition (from kilometers per second to likely less than a hundred meters per second).
She's the only Eurocommissioner that I constantly see fighting for all sorts of good causes. The others barely register or seem to be a net negative. I like Kroes a lot, but every once in a while, she suddenly supports something that seems quite the opposite of her usual position. Weirdly out of character. And I often find myself wondering if maybe there's something else at play in the background.
I wonder if it's possible to use computer vision techniques on the video footage to calculate the position and altitude of the skydiver at the time, and then also estimate the trajectory of the rock?
So what, European Unification-ists will say anything, it doesn't mean it's grounded in reality.

It's simply a political ideal, and an incredibly out-dated one at that. And I believe it's as deluded as communism, it's simply not how humans work. We don't share cultures, we have different values. Other countries are splitting up in the world today, splitting into their ethnic groups, where the EU is bizarrely trying to combine them.

The EU hasn't been tested. It's not had a single test because for decades the pressure the Cold War forced co-operation, and after the cold war finished we had a massive economic bubble, meaning everyone was swimming in cash.

We've finally had the crash and it doesn't look all that swimmingly amazing or stable in the EU any more.

You think if fascists seized control of Greece they would magically be peaceful because they're in the EU?
> "... better obscures ..."

In their defense, they didn't say it completely* obscures the use of CloudFlare.
Salesforce comes to your mobile email
How fragile we are as humans.

Compared to what?
No it did not fell out of the parachute. To the obvious:

If it would have been in the parachute, it would be moving at the same velocity as both the parachute and the man. It obviously can't have been under the parachute, it would have droppped instantly, it doesn't.

If it would have been on top of the parachute it would have gotten a push upwards to reduce speed (but its still moving _downwards_ unless some magic explosion happened).

Now according to the video, from the time the parachute opens, it takes roughly 8 seconds (!) until the rock passes. During that time the mans velocity decreased substantially due to the parachute...

Well just do the math.
Those cable companies have been their distributors for 30 years. They'll loosen gradually. The new infrastructures will help. But I don't fault them for taking it slow and easy.
"HBO GO. It's HBO. Anywhere."

Well, you know, except in most of the world. It's a shame because I'd love to pay for HBO in the UK.

http://www.hbogo.com/geo.html
Calling the data gathering intrusive is a bit of a stretch. Considerable efforts are made to ensure you're anonymized and personally identifiable information is not gathered. There are people to actively work to ensure you're not "tracked" in any way.

Off-Topic: I'd be interested to see the number of people who turn off the Microsoft CEIP (terrible abbreviation), yet still use a Google id and/or accept DoubleClick cookies.
I wonder what will be the unintended consequences of abolishing roaming fees?

One would probably be slower upgrades to 4G, 5G as things cost money and now carriers will have less for capex.
This was a terrible article. The bulk of it was talking about jQuery with a final few sentences alluding to "angular is hard" with no substance or reasoning.

Personally I find the angular concept easy to follow with the only hard part "how do I accomplish X" which is pretty easy to find answers for.
As an admin (by preference) of Debian systems, I've been rather partial to a systems configuration management system which emphases same, and leverages the strengths of APT.

Joeyh seems like the guy to do just that.
I've tried different supplements before though not glycine and melatonin is not something that is easy to get in the UK.

It's hard to say in the singular case whether they work as I can't rule out the placebo effect what I've found for me though is that a good diet (lots of fish and fresh vegetables mostly) has as much or more of an impact.

I'll certainly look into glycine though, thanks.

EDIT: I took a look at the studies (well the overviews anyway) on Glycine, fascinating reading, I've ordered some from Amazon and will see, again, many thanks :)
Being used all over the place in the Silicon Forest (Portland/Hillsboro Oregon). Everything from startups to places like Nike and Intel are building out tons of Angular stuff. OSS and .Net shops both using it extensively here.

Not saying that represents the market, but just saying it's taken off in my corner of the world significantly.
The Problem With SQL Azure
How does this work? I don't see how its possible to fight the scheduler or how caching works via userspace.

Maybe I don't understand this stuff, but maybe the kernel should have some bypass API for high performance applications, instead of coders finding curious ways to fight it.
> It's well researched.

On what basis do you make that assertion? Just curious...
Why is a database table called a "table"?
> 3) Yes, while we're at it let's change the subject to photo sharing websites instead. That sounds reasonable.

The question: "does Facebook spying on teenagers to help Abercrombie & Fitch sell them crap they don't need add social value commensurate with how much money they make doing it?" isn't an attempt to change the subject, but rather a glib attempt to criticize the structure of the question. Since when do we judge compensation based on value added to society, and if that's what we do, why don't we apply that approach beyond finance?
What happens if people decide to stop paying Mr. Myne to use his machines?

Someone else invents it? The fallacy is the same one that most people in favor of "intellectual property" operate under: that Mr Myne is somehow so special that he's the only person who could have ever invented the machine. As history has repeatedly shown, even the very special are hardly ever truly unique. Most inventions and discoveries occurred at roughly the same time by different people around the world.
I always wondered how partial duplicates on images were found. This wasn't as complicated as I was expecting. I assume some similar techniques are used for reverse image searching?
Should warm up the credit card then - hardware announcements haven't been made at WWDC for a long time. All iPhone announcements are in September.
Right now you can get the same guarantees about price with a simple limit order.

If you don't care to watch each time period, why do you care what the time period is. If I am happy to set my price and let it roll throughout the day without change, then the existing system works just fine for me.

The issue comes from wanting to take new information into account to change the price I want to get. In that case, I do need to see the results of each auction and adjust accordingly. Once I allow for that any time period you set is unfair for someone. We just need to decide on the balance what time period has the best price discover/least overhead/is most fair to the participants we want.

My hypothesis is that the current system does this best.
Inside Facebook’s freakishly accurate face recognition technology
The gist of this article ("do whatever you wanted to do and accomplish it in the most dedicated way as if you won't be alive by tomorrow") has become my life motto ever since my brush with death in a car accident three years ago.

It will also always remind me of the protagonist in Akira Kurosawa's Ikiru (1952) and his determination to realize the building of a playground for children before his death by cancer.
More people have used and experienced CRTs. That doesn't make them superior. Just the state of the art for their time.

You're right. It doesn't matter that I think that. It matters that OSX can get people to convert because Windows is stale and it's desktop doesn't work well.

I didn't say "doesn't work". I said "well". Which is pretty subjective I guess, but I did qualify that it was an opinion so...

OSX has made changes. Some successes, some failures. The only real constant is that it does tend to change (at least to a greater degree than Windows IME).

Sure, MS may have the GM of operating systems on their hands. And there are a lot of GM fans with little Calvin & Hobbes stickers on their vehicles.

That doesn't mean there isn't room for improvement, and I'd be a lot happier as a PC user who only uses it for gaming if I never had to see the Windows Desktop experience again.

But I guess I'll be waiting for SteamOS for that to happen.

I mean, how many Xbox users want their much more Metro-like experience replaced with a standard Windows desktop?

I never argued it wasn't disruptive to goto Metro. As someone who uses BSD (OpenBSD load balancers), Unix (SmartOS VM hosts), OSX, Ubuntu (VMs) and Windows routinely, I just place good, intuitive UX above familiarity. It's the reason why Ubuntu is one of my least favorite distros with their alternative user-space tools and /etc design, and why the Windows Desktop is easily my least favorite GUI environment.