skysight-inc/HackerNews huggingface dataset:
So are there systems out there making trades designed to confuse and make HFT systems do the wrong things? Could you make some move then others? Can you run game theory stuff to constantly move the market in certain ways?

Is this really the most efficient way to allocate resources...?
CyberLink PowerDirector 13 Ultimate Crack and Key Full Free
I'm getting : Connection refused

Description: Connection refused

- But it sounds like a really awesome idea!
> Most luggage isn't really secure in the first place

Nothing is secure, really. I'm continually amazed that people want to see security as a binary thing.
I make that about 43TB of smartphone HD video, based on his stated walking distance and speed.
I suppose the thing to ensure is that you don't get into a contract where you have to do that. If you are releasing bottom-of-the-barrel tat for money just to be popular and sell albums, does that mean that the first release you put out was drivel just to be popular? Thought-provoking eh?

They could just put out an album that's completely different, like Tom Jones did when he didn't want to release another Sex Bomb...
Indeed. Most texts stop at the 4-equation notation that has both electric (E) and magnetic (B) fields, but with a small extension it becomes a single equation, which is lorentz-invariant: https://en.wikipedia.org/wiki/Covariant_formulation_of_class... - I regard it as a much more fundamental and succinct description of how EM fields work.
For luggage it's usually on a zipper with two sliders, which you just pull on the tape to separate, look inside, do whatever you like while in there, and then move the sliders back and forth twice to re-close, so it never really mattered.
One of the difficulties of improving the overall healthcare system is there are very few ways of making systematic improvements. This article talks about a single hospital. They demonstrated a method which works, but this only improves one hospital. For a real change to occur this would need to be repeated at a large number of hospitals on a hospital by hospital basis. The US healthcare system is incredibly fractured with large regional variances. The question is how to improve the system as a whole not on a piece by piece basis.
It would be hard to expect Germany to produce more in absolute terms, with Germany's population being 25 % of US population (US=320M, Germany=80M).

With its population 4x higher, the US only produces 2.5x more stuff.

That's a huge difference.
Look at a market without market-makers. Housing is a good one. Houses sell only when there are "slow" traders willing to buy and sell. Have you ever bought or sold a house? Would you like the financial markets to be more like real estate?
> doing foreign affairs

This isn't about diplomats, it's all government jobs.
This stuff goes completely over my head.
Reducing electricity consumption I: Lighting
San Francisco Should Always Have a Subway Under Construction
Introducing the Rendering Frames Timeline
India has a literacy rate of 90% as of 2015[1], so I think the point holds.

1. http://www.uis.unesco.org/DataCentre/Pages/country-profile.a...
> THE design for a key that allowed a convicted killer to escape from a Territory prison was printed on the cover of a booklet given to all inmates, it has been revealed.

Pahahaha. That sounds like something you'd find in an ARG puzzle, but this was a prison. Kinda curious how the other prisoner had jeweler's equipment in his cell, it seems like that could be pretty dangerous. Good behavior?
These are specialised industrial suppliers, you can't buy it at a place, you have to request a quote from a supplier[0] and pray you'll get a callback (then try again through a different channel, because they most likely won't reply to somebody who just wants a 32" panel, note how the contact form has a "volume" selection starting at "< 10000 units/year"). Seriously. When you try to get an evaluation/test kit you get a 7-segments display[1].

[0] http://www.eink.com/contact_sales.html

[1] http://www.eink.com/quick_start_kit.html
Nanex sells market data and tools for analyzing market data.

Historically (I haven't looked in a long time) their market data was inappropriate for HFT usages as it was not at the fidelity required for those applications, but it was very cheap in comparison to other market data providers.

This led to a natural segmentation of their market such that most of their clients are people who are a) interested in market structure but b) not interested in high fidelity market structure information and who aren't interested enough to spend more on other options. That frequently is large block traders (hedge funds) who have a natural opposition to HFT market makers.

Whether that is the only factor in their strident anti-HFT position or if they have other personal moral reasons for it as well, they also publish a highly biased blog railing against HFT, but that is not their business.

In the industry, I never encountered them in the context of "highly respected financial research firm" and only in the context of "dirt cheap market data archive".
This is awesome! Thanks!
I like their angry song about batteries....

I know I get that angry when my laptop is running out of charge, that's for sure!
I recall reading that it really only takes about one (maybe two) regular office keys to create the master key that unlocks them all. There were flaws in that system which made it easier (given only keys), but I would wager it's not too hard to make a master key given a few locks as well.
Yes. For instance: all the recent drama about "layering" and "spoofing" fraud is about small (and surprisingly dumb) pieces of code that exist to trick electronic trading systems into trading against their owners interests.

As for efficiency: it is sure as shit more efficient than when stocks were quoted in eighths, and market makers had a collusive agreement to not to quote odd eighths so they could pocket extra money.
Pain, cost, inconvenience, etc are all marginal motivators even if they don't have the 100% effect on people's behavior that you'd like. Some people are going to be dumb full stop. But for everyone else, giving them more information is probably going to be useful and on the whole, will move things in the right direction.

Keep in mind that I said "might" not "definitely will for sure 100%" so that's in line with my above comments re on the margin.
"In particular, there is no reversion to the mean... there are going to be literally hundreds of papers exhibiting some reversion to the mean effect."

Okay.

I also think you don't know what a martingale is. It is impossible to make any expected value betting on martingale movements, by definition. If you believe traders are purely "betting on price movements" of martingales then profit is impossible. So either prices aren't martingales or trading is not purely a process of betting on the movements of market-clearing prices. Actually, both assumptions are false.
Looking really good, and I was just looking for something like this. Thanks for sharing!
i3??? That's so ugly, that I wondered, what stuff were the designers smoking and how they managed to persuade the higher-ups to actually produce that.

But I understand you after owning X5 ;)
Thanks for the feedback. It went down during the night. It's back up now though!
I'm kinda surprised that key number 2 on the imgur mirror is a dimple lock. Those are generally used for more high security things than crap tsa travel locks; they're expensive too. Key 4 doesn't surprise me though.

https://imgur.com/a/JQD7l
I don't know why you're getting downvoted.

Any religion is as good as the other, and you're just going by what your religion's deity told you. Nothing wrong with that, as far as I can see.
Yes, absolutely there are many HFT systems trying to game other HFT systems. Some of them are using perfectly legal means and others are doing things that are less clearly legal.

> Is this really the most efficient way to allocate resources...?

A - Yes as far as we can tell. All the other options haven't worked nearly as well.

B - Be very careful when assuming that the markets are about "allocating resources". That is a by-product of the markets. Their main purpose is about risk management.
Analyse Asia 58: Building Relationships Thru LinkedIn in Asia with Vicky Skipp
Synopsis: We interviewed Vicky Skipp, Head of Sales Solutions in Asia Pacific and Japan, LinkedIn. From Vicky’s experience in sales from Adobe to LinkedIn over the past 15 years and building her own personal board of directors to guide her career journey, we discuss how the sales process in Asia have changed from a wide broadcasting approach to targeted social selling and the importance of relationships in sales and business in Asia. Vicky provided a primer to how LinkedIn sales solutions helped companies such as SAP to build up their existing and new sales pipelines in Asia. Last but not least, Vicky provided some tips for executives in how they can build their personal brand on LinkedIn.
https://en.wikipedia.org/wiki/SubjectAltName
You need to correct your vision in some way (glasses, contacts, surgery). It is the surgical variant of the correction. It demonstrates how the market for surgical procedures works when considering pricing. Its all markets, its just who gets to decide on what you value.
Read "Functional Programming in Scala" or any other good book on functional programming to see things differently if you've just stuck with imperative so far. There's also http://iloveponies.github.io/120-hour-epic-sax-marathon/

Read books on concurrency ("Learning Concurrent Programming in Scala" if you carry on with scala) and then you'll find different ways to write performant concurrent code - for CRUD sites or other stuff.

I'm not pushing scala rather exposure to other ways of doing things you might not have come across - functional programming, futures, akka, etc.

But yeah, also design patterns. And have you read http://highscalability.com/ for architecture ideas?
The ASP.NET website (http://www.asp.net/) itself has a bunch of useful guides. Beyond that, Microsoft Virtual Academy has a few training videos/courses that might be useful.

https://www.microsoftvirtualacademy.com/en-us/training-cours...

http://www.microsoftvirtualacademy.com/training-courses/crea...

https://www.microsoftvirtualacademy.com/en-us/training-cours...
> They might load software into the device that makes it respond to their control, and limits your ability to use the object

I'd say that's a pretty direct infringement on my ownership, but then again I've got a few tin-foil hats lying around.
It simply allows you to send arbitrary files. No different to sending a link to a virus over email or putting a link on a Web page.

Stupid/normal users would then try run the downloaded file.
I'm not really sure what your point is, so perhaps I missed something?

Conflating a want for price transparency, so that I can spend rationally where that rationality can be logically exerted doesn't really seem to me a free market ideal as much as it is just common sense. There are many medical decisions made that aren't life or death, and in my admittedly anecdotal experience, that's been most of them. A great many medical demands are inelastic.

When I lopped the (very) tip of my pinky finger off in an accident, it was nowhere near a dire enough injury to worry about the cost of repairs, but it did need stitches. Had there been a repair option, I might have opted for it, but only if the cost was reasonable.

That said, we already know the market value of an ER doctor, or a radiologist; that's how we know what to pay them. It's not as though they're members of some secret cult of faceless men exacting arbitrary payments for their efforts. We know what it takes to pay them, and presumably, they could come up with an hourly cost for their labor plus materials if they so chose. It might take some practice, as estimation is hard, but basically every other service industry in the world is able to do it, so I can't imagine why the medical industry would be exempt.

Regardless, sure, there are plenty of ailments that would hard to estimate, or meaningless to do so, but I don't see why that means nobody should try to do their jobs in a cost effective manner.
You could lengthen the bridge (theoretically, the pieces might not fit that snug) with any combination of the pieces all the way down to the case of a reverse bridge connected at the bottom.
The very premise that an idea will get you money is BS. I guess this is a cultural change and there are those who love it and those who hate it. I fall on the later and miss days where startups in garage could bring down huge corporation and it was all about building. Now, it seems most startups are part of a big corporation via funding and we mostly get to see a plethora of names ending with "ly" or an "xyz" clone. So, on paper they say stop thinking about money and yet everything becomes about it. A bit of a double standard I would say.
It shouldn't be quite that easy, because the engineer has locks A, B, and C, and needs to discern from them the skeleton key that unlocks X, which they do not have.
Fall Roof Maintenance: From Inspection to Gutter Cleaning – LGC Roofing Blog
Sales numbers are not that exciting when some people can look at actual streaming statistics. Something like http://poly-graph.co/timeless/ with album sales vs median track streaming count would be interesting. (median, because albums are not about hit songs)
It's not a myth. Or you are specialized in one or more complex skills in one field. Or you are specialized in knowing as much as you can in every field to build something out of it. So or you are specialized in a field like deployment (AWS, boto, Chef, docker, kubernetes, Mesos... and the list goes on), or like front-end (React, bootstrap, CSS3 reactive design...), or iOS app, back end, databases... Or, you are specialized in connecting all these dots. And this is a full stack developer.

Just knowing how to do the "operational details" is a job in itself. It's a job to work on very specific things at Google/Apple/FB, and it's what they need the most: developers who are the bests in their field. On the other side, it's also a full time job to know how to build a website with RoR with a RDBMS db and cache db, maybe on AWS, and even with some React in it. It's already quite a lot. And this is more what startups wants. Or at least a few of these people as a team leader or working closely with every person in their team to connect their dots, to design the app/web app/web site as a whole.

Now yes ask to a full stack RoR dev how to design and code a database and he won't know, ask him even how to do specific things on AWS and he may not know either. But he will know how to design and build the whole product from A to Z, and to manage people doing what he can't do. And at the opposite ask an expert in iOS apps how the back end really works when he sends a request to their Restful API and he won't know. Same thing for someone specialized in the back end and you ask him something about React. Both are specialised in one stack.

Or you want to master specific tech/stack/field and you become specialized in one of them, or you become broader and broader and you become a full stack developer. It can be full stack dev in iOS (so maybe with some NodeJS in it to do Restful API), or as another example a full stack dev in big data (so I guess: Python Luigy, MapReduce, Spark, Redshift, Scala, Java, AWS...). At the end of day our time is limited and we can't be specialized in everything so if what we love the most to do is to use

Personally as a full stack dev, I am like a small CTO and can be one. I love to have the whole picture in my mind and to know how everything works together on a higher scale. I love all these tech around (AWS Boto, Docker, Vault, Consul, Spark, ML...) and I am like a kid who with a new toy when projects like these ones come out. I prefer to read an articles on Highscalability.com about Airbnb or Uber and do the same, rather than crunching SQL requests.
I agree with the other comments: we don't have a free market now and health coverage comes with huge amounts of moral hazard for both providers and patients.

Veterinary medicine is something operates in a truly free market environment, and it seems to work towards efficient outcomes, so I'm curious if the same could be done for humans.
Still? It should be working now.
The Tiny Town Where Almost No One Owns a Car and Everyone Takes Taxis
HaskellR
Sorry, my host crashed. It should be working now!
I've had E30 and E34.

While the technical level and overall comfort was very nice, they were terrible rust buckets.

Their current models can be fun though. Eg., try to change headlight on E70 (yes, you're going to need a hoist and rivet gun).

BMW is just not what it used to be.
10,000 Developers: The Workshape Breakdown
> Some people question the merits of choosing civil servants based on such an exam but getting through a pretty impressive feat.

Well, in Brazil, many people do nothing but study for years for a chance at getting a government job. The competition is fierce. Not sure how to compare with the exams in India, but the issue here is the sheer number of well-qualified candidates.

So, many of the brightest minds are getting wasted. Instead of opening businesses, they end up doing hardly any work at one of the government agencies.
HN hug of death indeed. Should be back up. It uses SongKick for the events.
I'm not sure if you've been keeping up with US news, but this isn't true, at least until it's decided in court. GM, John Deere, and Ford all have the opposite opinion[1][2][3]

[1]http://www.againstcronycapitalism.org/2015/04/john-deere-and...

[2]https://www.techdirt.com/articles/20150421/23581430744/gm-sa...

[3]http://news.boldride.com/2015/04/gm-wants-to-make-working-on...

Not to mention I think it's currently illegal to Jailbreak an iPhone or root an Android, despite them being yours.

I really do wish the US was as cut/dry as you make it seem, and I wish they cared about consumers more, but in reality, Companies get far more rights then we, as consumers, do.

Edit:Formatting
We don't need the amount of liquidity the HFT people say they're providing. No one benefits but them. They're not adding value to society.
The turbocharged 4 cylinder, while has more horsepower and more torque, has also much shorter life span. Do not expect to drive upwards 500k km on it.

But I guess for those who buy cars for 4 years, that's fine.
Understanding LSTM (Long Short Term Memory Networks) Networks
Cognitive mechanisms in meditation practice
I get that you (and a lot of other people) think that, I just don't care. In general, you should disabuse yourself of the notion that a) you speak for HN, and b) that I care what you want.

Other HN users can have their opinions on what they want from HN, and can downvote accordingly. But I'd like HN to be a place where people can learn about reality instead of just go to get some false positive feedback, and I'm going to act accordingly.

If you want a place where you can get unconditional approval, you might want to try your mother. She'll always approve of what you do even if it's terrible.

And in general, you're not going to gain much traction talking to me as long as you think people are obligated to care when someone gets offended.
hehe, it's back working now. I had a $5 host...
I think the Apple/iPhone has a common design language across products like the BMW has with theirs (kidney bean grill, four headlamps, and the Hofmeister kink).

I love when you can view a product's change over the years and the first looks a lot like the latest, like the Porsche 911 http://i.wheelsage.org/pictures/p/porsche/911/porsche_911_52... , the iPhone, and the 3 series
Well, if it wasn't, I doubt Lexmark would care whether Impression refilled its tone cartridges...
If you have any feedback, ideas or suggestions please write them here, so we will implement them in future updates.
It's been some time, but if I'm recalling correctly, the doctor seemed in favor of the additional testing. Whether that was because he was genuinely concerned, scared of a malpractice suit from insufficient testing, or something else I'm not privy to, I wouldn't know.

As I mentioned elsewhere, maybe cost isn't a meaningful proxy for medical judgement, but on relatively trivial matters like wrist sprains, minor cuts, etc., it may often be a good way to discriminate, assuming appropriate follow-up to ensure that the initial decision wasn't errantly done.
We've used a really high quality audio driver and have some future products that'll help round out the system (aka subwoofers).

For reference here is the data sheet of speaker we use: http://www.baysidenet.tv/catalog/pdf/Peerless/30n18al04-04.p...

We also have a half a dozen other products designed to fit into this form factor, all of which provide a superior lighting experience to what is available on the market today.
They are put through a rigorous program at the National academy of administration before entering service. Considered to be an extremely fine institution.
So what's the RIGHT amount of tax we should be paying to commercial market-makers for the privilege of trading?

The residential real estate market is gigantic, a demonstrably functional piece of the US economy. Maybe the stock markets should work more like the real estate market. Forget about liquidity. Who needs it? Instead, we'll just pay seven percent of every transaction to an "agent".
> They insert themselves into the transactions

Be very clear what you mean when you say this. Because the vast majority of the time when people talk about HFT, the only way the "insert themselves" into transactions is by acting as the counter party to one side of the transaction.

In this context they add a lot of value to the system, they smooth the demand curves in time and take on some of the risks of warehousing supply.
Heh, I see someone hasn't been paying attention to the industry outside of their bubble for the past 10 years.
The alternative to HFT is not the real estate market.

The alternative to HFT is how the markets operated for decades prior to HFT companies vacuuming money out of the system--that is, quite well, and with adequate liquidity, and with lots of money still being made.
Yup a fair point, my initial reply was indeed just shooting down an idea rather than figuring out whether it would work and how could it work if not straight up (criticism vs constructive criticism). I'd be interested in seeing an ISP-level funding scheme, and moreso if enough would be willing to use it that it could feasibly replace adverts. I'll have a proper look into those links too, thank you

Thinking further (or.. at all) the models that flattr but more successfully patreon provide do seem to work and would appear to be the best model if the community you're providing for is willing to use such a system - and they are, in many cases. I can think of a podcast or two that rather than use sponsored messages are funded by their community through patreon. In fact I can only imagine they're earning more and in a more stable fashion for doing so

I'm not sure if an ISP-level funding source would be feasible on the global scale but that may just be my own limits talking, something that definitely works in replacement of adverts is the product (in this example a podcast) being free but with perks for those that want to support the creator directly. The easiest added extras in this example would be behind the scenes, an additional private podcast, archives of episodes long gone by.
Seems to be. Maybe I'm buying cheap printers, but the last two I've bought had anemic toner cartridges along with a catalog and order form for direct sale of the cartridges that were actually full. Notably the manufacturer toner cartridges were close to the price of the printer itself, while the third-party knockoffs on Amazon were a fraction of the price.

I'm no industry insider, but their packaging behavior says to me that their real money is in getting you to buy their toner, and the stark price difference between first and third party replacements indicates the likely markups on the first party option.