skysight-inc/HackerNews huggingface dataset:
North, South Korea trade fire across sea border
So just like dozens of other firms?
I pretty much agree with you. The reason I built the tool was to give a system overview for the vagrant box we use at my work. Especially one that could tail and search logs (the one in supervisor is pretty useless).

And in the end; all devs aren't devops so it's easier to have it web-based.

Who knows, with time, maybe this tool can be extended to be useful for your purposes as well.
The HFTs are doing something which reminds me of the mutant attack with Bitcoin. And the 'fix' is also very similar to how you can try to defeat mutants, if not by making mutation impossible in the protocol (which we are trying to do), but also making it more difficult to beat the propagation of the original transaction with mutants; by transmitting it to more nodes concurrently.

Unlike the mutant attack, in this case there are possible positive effects that can arise.

But what I don't understand is this. I place a human order to buy 1,000 shares of X for price P through a public exchange. The HFT algorithm can get those shares for (P - a) on a private order book I don't see, before my order even arrives there.

But from the perspective of the seller(s) on the private book, they had open sell orders with weighted average (P - a) for those 1,000 shares. That's open orders, a.k.a willing sellers. As long as there are real shares being bought by the HFT before the sale to the original buyer, then how can you complain?

But what I really want is to be able to place these cross-exchange orders with something like a 2 phase commit. Get a 'lock' on the public buy and the corresponding private sell(s) before having to commit. And then clear the committed transactions concurrently on both exchanges.

That's a risk-free trade, and the result you might expect is the spread is shared between buyer and seller. Maybe some of it goes to transaction fees.

And that's how I look at the HFT algos. They are basically a hidden transaction fee on a very fast routing of your order. There super-order-routers charge a transaction fee which is applied by tweaking the listed price. Over time the amount of the tweak decreases until it exactly equals your stated price, which means the super-order-router gets no fee.

If you had [paid for] access to that other order book, you could have spent less / earned more on the trade. But there's the added cost of having a direct connection to that order book. So basically you buy it yourself, or someone else pays for it and acts like an automatic passive router. In the end you get exactly the price that you asked for.

I wonder how often the HFT algorithm is selling shares that it doesn't really own. No one should have been surprised that MtGox wasn't running full reserve. Who's publishing the crypto-proof that the public exchanges are running full reserve? Haha, actually we know that they don't - they just call it naked shorting. So I guess I'm asking, how much naked shorting (even over brief time periods) do the HFT algos get away with?
You could have equity ownership in my bicycle just as you could have equity ownership in a company. A company is still a physical thing and equity ownership is just different form of partial possession of physical property.
I came to the comments for exactly the same reason, they're excellent diagrams!
You underestimate Excel! You can point Excel to a DB table and use pivot tables on top.

I know it can at least get up to several million, didn't have a chance to test it beyond that! :)
What order book are you talking about?

And any broker dealer can sell shares they don't own...Because they are a broker dealer. Call your congressman.
Safety makes a huge difference. It is so ingrained into firefighter culture such that despite the risks of this profession, it doesn’t rate as one of the most dangerous jobs (although overall it’s much higher than would seem to be the case - 44 fatalities would put it on this chart, but for the large numbers of volunteer firefighters in remote areas that rarely see a call).
What about gift cards?
I find bittorrent sync to be a vastly superior way to share files with people. (http://www.bittorrent.com/sync).
>Nobody wants to invest in somebody with a bunch of failed entrepreneurial ventures. But if you sit back, take a check, work on cool shit and build an impressive body of work, well then perhaps people will be more willing to invest in you.

Exactly. If your ideas aren't working right now, why not work on some other guy's?

I can see that you're willing to let someone else handle all the business side. So why not not join some start up that you believe in, and provide your tech skills to help realize their dream. In the mean time you can learn how they did the business side. This will also alleviate you from your financial troubles (though do you really have them? considering your $5000...)

And then some time in the future, someone will provide their business skills to help realize your dream.

Either way, it's time to get a job.

> go bang your girlfriend and give her a massage.

Yep, she deserves that for sticking with you through all this.
Yes, that's actually happened before. It's never turned out well for the actual perpetrator.

The mail service has a remarkable ability to track mail packages, even those not sent by certified or registered mail. Additionally, police stations log all calls received--there's no such thing as an anonymous call. The use of a pay phone, prepaid cell phone, or online burner number is a huge red flag--it supports the recipient's defense that someone is attempting to ruin their reputation. Plus, almost all child pornography cases are coordinated with a special DOJ task force, due to the international scope of this offense.

Once it's been established that the recipient is being framed, the police--and the FBI--turn their attention to finding the actual perpetrator. The use of the postal service makes the frame-up a federal crime.

This is actually how the FBI actually cracked one of the more infamous child porn rings a few years ago--some idiot tried to frame his neighbor over some stupid dispute and they traced it back to him quite easily.
Not updated yet, but here it goes: http://kernelnewbies.org/Linux_3.14, with the caveat that:

> /!\ /!\ /!\ WARNING /!\ /!\ /!\ : This page is not complete and it's missing lots of critical information.

Also: https://lwn.net/Articles/581657/, https://lwn.net/Articles/582352/, https://lwn.net/Articles/583681/, http://www.phoronix.com/scan.php?page=news_item&px=MTYzNDg and http://www.reddit.com/r/linux/comments/21sxiw/linux_314_rele....

π
I tend to agree with you on the immediate cause of the fall, but I do think the friction that will result from the IRS decision really damages the value of Bitcoin as a low transaction cost mean of exchange.
Arrogance: When you only thank your premium users.
This email was sent to all premium and free users using a mailinglist. Lesson to be learned here; Free users can attract paying users and give you publicity. Don't ever forget that!

--
From: Andrew of Mixergy.com (contact@mixergy.com)
Subject: Can I thank you when Mixergy hits 1,000?
Message:

I'm about to record my 1,000th interview. When I do, I'm going personally thank the people who keep this operation going: Premium Members.

Click here if you'll let me thank you on camera or on the site.

Please do it by Monday because that's when I'm going to record.

As you've noticed, I'm obsessed with my audience and the interviews
I create for them. That's why I don't let guests "wing it" and hope
everything works out.

I hire bookers, researchers and pre-interviewers to MAKE SURE that
if you invest an hour listening to a Mixergy program, it'll be the
most meaningful hour possible.

All that work takes a team that is as manic about the Mixergy
Mission as I am. Premium Members make it possible for me to hire
that team. I reward them with the best interviews and
member-exclusive courses that I can possibly create.

But I also want to say THANK YOU.

Can I give you a public thank you on my 1,000th interview?

Just click this:
http://mixergy.com/thank-you-on-mixergys-1000th-interview/

Andrew Warner

Founder, Mixergy

PS to give me permission to thank you in the 1,000th interview, go here:

http://mixergy.com/thank-you-on-mixergys-1000th-interview/
Can you sketch out how you would do it with inheritance, and why it would be a better solutions?

Do you have any other good examples of situations where it makes most sense to use inheritance?
> I can't imaging going seven years without some kind of incremental release that you can use to gauge whether it's working or not.

That's because you don't work for the government. For the government spending millions and years on something and have nothing or worse to show for it is completely normal. It can not go bankrupt, it can not (excluding very rare cases) be destroyed by the competition, it can only drag along. Surely, people at the top can change, but the bureaucracy only expands, and changes very little whoever is at the top. It requires very determined idealist, powerful skills and huge amount of luck to change anything there. Failure to change is routine and normal.
Lucy Koh, Silicon Valley Judge
Venmo is unavailable outside the USA (or at least, it's not available in my area).

Splitwise appears to be just a web2.0 accounting type app? I didn't see any mention of actually moving money around. Bitcoin isn't actually that great for splitting bills at the moment because wallets don't have Splitwise type features. But in theory once added it should be quite convenient, assuming you can tolerate the usual Bitcoin downsides.

I think you're right that currently there's not a whole lot of incentive for people to use Bitcoin in the USA, especially for local transactions. But the system is still very new. It's hard to know how things will work out in future. All we do know is that the payments market, especially the American payments market, is extremely stagnant. The USA is stuck in a timewarp from most of the worlds perspective despite a proliferation of little startups that try and do something hip with magstripe cards. I mean, this is a country where people still routinely use cheques. So it may well be that Bitcoin, as it matures and adds features, finds a way to be competitive against credit cards, especially now the rules forbidding price differentials are being struck down.

The IRS decision is a problem for sure, but it's also specific to one geography. The UK tax authority decided the same thing (Bitcoin is not a currency) and then changed their mind shortly afterwards. Bitcoin quite clearly IS currency by any reasonable definition that doesn't boil down to "a currency is whatever the government says a currency is", and so hopefully at some point the IRS decision would be changed in favour of common sense.
What do you want to see from the Chinese then since you live in China? I assume you are fluent in Chinese in this case.

I am Chinese and I watch Chinese drama with my parents, almost every night. While Chinese drama plots tend to repeat over and over (there is always some love triangle involved), I don't find them boring.

First I enjoy watching drama with my family at the dinner table. Two I feel that there is an urge for me to finish the drama to confirm my "theory" of the plot. The same can be said about the Western drama. Recently Western drama seems to be around apocalypse and new human civilization. What makes a drama boring is the combination of either or both the quality of the actors and the pace of the story.
It's been 160 years since the first hydrogen fuel cell and the lead-acid battery were invented.
I've heard a BBC report on the very same issue (Alibaba crowdfunding movies) and it was said, that the big problem is the lack of creative talent.
I know this seems a hoax from the start, http://beforeitsnews.com/alternative/2014/03/hijacked-ibm-en...
and I know EXIF can be changed, can someone show me some big incongruity in this story that I might miss out ?

I know this maybe stupid, but I like good stories, and this seems like a good story, but seems not real. But then I thought it in reverse, what if a story like that would really happen how would we knew was true? Can we investigate with our IT knowledge?
What's my resolver?
I'm actually very interested in the service (been hearing a lot about it lately). Does it require one of your computers to be on at all times? Or is there some sort of storage conduit that doesn't decrypt your data, but only acts to make it available to your other devices (mobile, desktop, etc)?
https://github.com/rentzsch/mach_override

https://github.com/rentzsch/mach_inject
Fundraiser posts like this are not great for HN. That a cause wants money isn't intellectually interesting. If the project is new and significant, I guess it's ok. But it would be better to link to the most substantive page about the project, and mention the fundraiser in the thread.

Crowdfunding is a great thing, so I'm not sure exactly where to draw the line on this. What I'm sure of, though, is that posts entitled "Just 12 hours remaining to hit stretch goals" shouldn't be here. This post wasn't like that, but others have been.

I'm not casting doubt on the merit of any particular fundraiser, and especially not this one.
Semi offtopic... I love your interface and service. However, IPv6 is a requirement and you don't offer it. It's been promised for years now, but you leave your customers in the dark. Either say no, like aws, or yes. Please don't keep dicking with us.
exchange A has a bid at 99, offer at 100
exchange B has a bid at 99, offer at 100

mutual fund X places two market orders to buy and take out the current offers, one on A and one on B. Its order on A executes at $100, taking out the liquidity and making the new best offer there $100.01

HFT firm Y sees this execution and cancels their offer of $100 on exchange B and replaces it with one at $100.01 all before the order that was placed on B arrives.

This is a market fragmentation issue, Reg NMS tries to address this but doesn't really work at these timescales, because you only have to comply based on the current quotes you are getting from the exchanges, which could be many milliseconds behind (and if your system is slow to process the quotes and makes more money as a result, you won't be getting a task from your boss to speed it up).

http://en.wikipedia.org/wiki/Regulation_NMS

There are many other types of useless latency arbitrage that don't depend on market fragmentation, like trading on the difference in price between ETFs (basically a basket of stocks usually trying to match something like the makeup of the entire S&P) and the underlying individual stocks. Each time the underlyings change, the ETF price changes (within reason, risk hedging activity etc. could make the ETF temporarily get out of sync, but that is just another latency arbitrage oppurtunity). Whoever is faster wins.

It's pointless, there are datacenters full of servers running wait loops on incoming data via DMA so that they don't have to pay the latency price of a system call and context switch to the kernel. Basically burning up part of that mutual fund's money into waste heat.
Wow, I never thought of looking there. It's amazing reading tricks like that which people have come up with after years of thinking and experimenting. And they seem usable for quite a wide range of rating related problems.
This thread got silly a while back. I'm abandoning it.
Have you considered rethinkdb?
In many developing nations you can save a lot even from a $1k salary. If not, dedicate some time to freelancing, either locally or via elance/odesk. Shoot let's say for $40k per hour and do 2-3 hours per evening of that, plus some time on weekends. 20 hours = $400 per week, $1600 per month additional. Do that for a year and you will have money to live on saved funds for 1,5 years.
That is true, but when the reporter asked at the end "what is it about YOU that seems to invite skepticism", he replied with "I think it's because WE'RE doing things that are unlikely to succeed". At least Elon is speaking from the frame of the team and not from his ego, even if the media is not.
Looks interesting! Does it work in UK?

We are using OptimoRoute (http://optimoroute.com) for planning our delivery routes. Like Routific it’s also priced per vehicle/month, but it includes a web application.
What Leading Designers Think Of The FDA's New Nutrition Label
More than a hoax, it feels like the beginning of Lost. Did we all just die and are about to figure that out?
"Everybody’s winging it." <-- I love that quote
After what happened to Mat Honan almost two years ago, having insecure systems like Twitter "confirming" my pubkey seems more like a nightmare than a good idea, doesn't it?

And the fact that Keybase.io even suggests uploading your private key puts a big fat "AVOID" sign on the service for me.
I started on something similar as a side project[1]. I decided to build a dataset from the AFI Top 100 Films list and persist it in neo4j. The goal was to find interesting questions to answer with this dataset that couldn't easily be googled.

Most of my time thus far has been spent gathering the dataset, but I do have a few example cypher queries answering the following simple questions [2]:

1) What actors have appeared in the most AFI Top 100 films?

2) What are the genres of the top ten films?

3) Have any actors appeared in 2 or more of the top 25 films?

I'm working on building a much larger data set using a combination of freebase and imdb so that I can have enough data to start exploring much more interesting interesting questions (e.g. graph the frequencies of genres over the past 60 years; for a given film, find movies with the greatest overlap in genres, actors, and directors; generalize the n-degrees-to-bacon problem to work on any two actors; etc).

[1]https://github.com/mcphilip/film-graph

[2]http://htmlpreview.github.io/?https://github.com/mcphilip/fi...
Pyringe : a python debugger that can attach to and inject code into processes
It's pretty obvious that in a scientific field, without passion, rigor won't find itself. This article reeks of immaturity. And I'd rather have only passionate people in our field. Most coders who only go through a CS degree as oppose to elementary-highschool-life and beyond coders, there's just a huge wall of difference in terms of understanding down from the cpu to tcp networking, across to asm, endianess, etc etc. New coders just never really get it. It's like trying to learn chess at an older age, 90% of grandmasters were grandmasters by the age of around 13.

I learned coding because I wanted to tear shit up as a somewhat dark child. And that's why I know pretty much everything from databases to reverse engineering to packet sniffing/editing to patching, injecting, loaders, class modification, obfuscation and deobfuscation, and XSRF, RCE, shellcode, buffer overflowing, the list goes on. Along with whatever it takes for an interesting programming job.

New coders just don't get it, they are too far outside the scope of (played around with it as a child, because it was interesting.) Money isn't a good enough motivator to teach grubbers the real internals of a machine.
"Is this another ad for big design upfront, aka waterfall?"

Interesting comment. I have no particular leanings towards any methodology[1], but I do find it useful to understand a situation before presuming to have appropriate ideas about changing it[2].

To many that constitutes big design upfront. So be it. My projects tend to deliver on time, and to budget.

[1] https://www.wittenburg.co.uk/Entry.aspx?id=99bb5987-e08d-4e8...

[2] https://www.wittenburg.co.uk/Entry.aspx?id=46870dcd-70cb-4ef...
Tell me you have a source for this.
This was posted before several weeks ago and was debunked by the Maldives authorities IIRC. Not sure why it's getting traction again now.
LOL at the part about his wife.
> When the other big automakers get into the electric car mindset, who are they going to buy batteries from?

Umm... LG? They have an enormous operation already supplying GM and Renault, two big rivals.
What an example of "Make hay while the sun shines".
>With VM's hardware support gets less important for some use cases.

Speaking of, I wish jail-based FreeBSD VPSs were more widely available and cheaper. Where I've seen them the price is such that their use is hard to justify compared to Linux containers on RamNode or Digital Ocean.
The ideas that are used here are heavily researched. As an example of current work have a look at http://www.eecs.qmul.ac.uk/~laurissa/Laurissas_Pages/Publica...

Most of the challenge is in getting a way of assessing the value of innovations in the algorithms - how do you know how well it works ? Difficult unless you are running a large scale recommender that users can't opt out of (because pop goes your stats if the do!)
I can think of at least a couple of ways.

In an earlier thread someone used the term "legalized front running" to describe HFT, and in thread the final pieces fell into place.

Fact 1: we know that HFT companies have special hardware in place. They have effectively built FPGA's (or even ASICs) that can process incoming orders while the message is still partially on the wire. This allows them to react to new orders and executions with a latency that is below the transmission delay of the protocol packet.

Fact 2: HFT companies have built directional radio links to get their messages faster between exchanges. Speed of light is still a limiting factor, and the distance traveled between exchange A to exchange B is somewhat longer along the fiber.

Fact 3: The basic rule of trading is "buy low, sell high".

So, if you can process order information faster than than it takes to receive the entire exchange message, you can use that as an advantage against the rest of the market. The HFT systems know the current price for a stock in the system (the lowest standing price), and when they receive an execution, they know that someone else just traded at that price. They can send out a message to other exchanges to quickly buy the said stock at the said price and put out offers at a slightly higher price.

The net effect? "I just bought all of the stocks under your nose. Here's what I'm willing to sell them for you."

As long as the price they're selling the stock out is within the limit, they'll get an immediate risk-free trade. The HFT systems already had a buyer ready before making their orders.

[1]: http://ra.ziti.uni-heidelberg.de/cms/images/pdfs/High-freque...
Since 3.0, Minix changed the architecture. Now they are full micro-kernel, use NetBSD userspace tools, have EU funding and some commercial clients.

If you wish I can provide more info.
"I haven't got a PhD but I can (at least) learn and think on that level."

"I'm only seventeen years old"

Man, I really miss the good old days when I knew everything as well :)
So this amounts to some amount of free float for the broker dealer. How much are we talking in terms of $-days?

If they can sell and cover whenever they want, then yes it does start to sound like a 'print money' button.
J is really fun. There are a lot of Project Euler problems you can hypothetically do as one-liners and that's highly amusing to me at least.

Edited to add examples: http://www.hakank.org/j/
>It is worth drawing a distinction between that which requires a coercive third party like government to enforce (e.g., intellectual property) and that which does not require such a thing (defending property).

I don't believe this distinction applies here. Not all IP requires the government to enforce it (e.g. trade secrets). Conversely, if someone were to move into my yard, or steal something from me, I would call Police (an agent of the government) to enforce my property rights.

Note: I'm not trying to defend or ague for property rights, merely pointing out that this particular distinction is in valid, as the poster above pointed out -- all property is, to an extent, government enforced.