skysight-inc/HackerNews huggingface dataset:
This is not applicable to my comment. I was merely attempting to quickly and easily explain why treating "robots" as a distinct entity, rather than merely human tools, is an extant viewpoint.
The Internet is Broken, and How to Fix It
The difference is that no one will stop you from creating and distributing your own code editor even if you advertise that it's meant for malicious or illegal development. But don't expect the same privilege when you base your app off of someone else's API which you get to use for free by the way. Everyone knows when you use an API you're a house guest, paying no rent and you can be asked to leave at any time.
s/write/code/g;
s/writi/codi/g;
Show HN: Graph your HN karma over time (found)
"Buddha himself never claimed he was enlightened through meditation."

He claimed he was enlightened by following the four noble truths, of which meditation is one component. It might not be possible to achieve enlightenment through only meditation, but it's probably not possible to achieve enlightenment without meditation either.
And, like every vim emulator ever (with the possible exception of Emacs' spawn), it doesn't support all the vim keystrokes I use daily. My brain knows vim, and I'll code in vim. You don't see professional pianists perform on electric keyboards.
Everything matters if you're doing HFT (or back in the day, high speed algorithmic trading). In Australia, the support for algorithmic trading means you're required to house your server in ASX itself (ASX has recently introduced their HFT platform in 2011). And that meant ball-shrinking dollar values from place rental alone, not to mention the hardware and software times.

So I concluded that it's not where I could be.
It's clear why we need investors.

Why do we need day traders? Well, they can only exist because the investors exist, and they provide the function of pricing the market accurately. And provide liquidity to investors. Nobody is arguing that we should ban day trading.

Why do we need market makers? Well, they definitely benefit the day traders, because they do lower the bid/ask spread, once again making pricing more accurate. And provide liquidity to day traders.

So what I'm proposing is that we only "really need" investors - but day traders are good for investors, and market makers are good for day traders. Thus, market makers are good for investors.

I'd be legitemitely interested to hear criticism of the above argument. I've been learning about market making recently, and I'm certainly sure that there's still more for me to learn.
Now that is in interesting proposition: Let's pretend he said integer since floats for money is outright broken. On my 32 bit machine, enquire.c tells me that long integers have 32 bits of unsigned value. It also says that doubles have 53 bits of precision. So if you decide to use floats for money, you get bigger numbers than if you use long.

Oh, and might I suggest that you consider doing it in pennies rather than fractional dollars? It will work out better.

Better to understand the underlying territory, I think. That would not be over-engineering.
Sublime Text 2: Tips and Tricks
Fresnel lenses may help to find life in other solar systems
WTF does this have to do with hacking?
Yes it does. However in my case it is unusable as it constantly duplicates my bookmarks (Ubuntu x64). Are there any fixes for this?
Google Researcher Daniel Russel's Advanced Search Techniques
I can see a future version of this technology turning into an amazing fencing instructor.
Dr. Dobb's 2012 Salary Survey
Open Letter from a Millennial: Quit Telling Us We’re Not Special
I wish the instarepl supported doc and source, something all other Clojure REPLs seem to support. I've found both invaluable when working with Clojure.
Sigh. My point was they're begging the question in a headline like that, namely "Are American kids spoiled?"
The calculator is useful for approximations, but I've been bitten a few times. The only real way to know, as always, is to measure it.

The Dell/HP salesmen are worse, if you try to talk about power, especially if you do HPC. They will often flat-out refuse to believe that you're going to take 100 servers, stuff GPUs and all the RAM you can find in them, and run them at 100% for years on end.
> The power to govern is, in effect, speech, so by limiting ones ability gain political influence, you are limiting speech.

What? No, this is ridiculous. The power to govern is the power to use organized violence to achieve your goals. Limiting the ability to gain and exercise political power is exactly the point of any kind of liberal form of government.
I'm the OP and I'm happy to take any questions.
There is an impressive video of this robot from 2009 showing off its dexterity: http://www.youtube.com/watch?v=-KxjVlaLBmk
Why San Francisco is really That Bad: A Manifesto In Parts
I find HFT is a lot similar to SEO, and the perception is similar as well.

People just don't like either because they feel it's not bringing any extra value to society, and it's all about gaming something for your own personal wealth. But most people aren't looking out for your personal interest anyway, so you should ignore them.
Where is the fine line between coding tests and spec work?

I'm not a programmer, but I've seen startups co-founded by engineers try hiring designers in a similar fashion to I assume programmers as they test designers with a variety of unpaid projects. I've found it to be pretty annoying given that I've already shown a portfolio of work and it's not unlike spec work. I get that some people may have fabricated their history, but that's why some companies do a trial period before committing to a full-time gig.
yeah i've studied the subject quite a bit. he 'might' remotely have a point, but historically, this kind of reductionism hasn't helped the field.
And that meant ball-shrinking dollar values from place rental alone, not to mention the hardware and software times.

I got the first part of that, but what do you mean by "hardware and software times"? Yes, HFT relies on fast hardware/networks/software. Was that your point, or is there something I'm missing?

FWIW, despite a strong entrepreneurial bent, I would (possibly even will) look to join an existing HFT operation, rather than start my own.

(Unless you want to do it in the Bitcoin world - there is a Bitcoin stock exchange now and it's exciting times, my friend!)
Here's an interview with a pro high frequency trader from a top shop if you're interested.
http://techzinglive.com/page/1049/185-tz-interview-james-tho...
Maybe for 1 or 2 servers in a quarter rack; but all of these questions and concerns are very salient if you are filling full rack(s) or cages and plan to get your own ASN and such (as any serious internet company should, since otherwise you are not PART OF THE INTERNET). Not getting the answers to these questions is the difference between quite a lot of pain, heartache, and money spent or having everything run (relatively) smoothly.
Profile of Uniqlo and its CEO, Tadashi Yanai
Are you familiar with stop loss orders?
You can implement RPC in tuplespaces pretty easily:

Client:

out("rpc-request", uuid, "say_hello", "m0th")
in("rpc-request", uuid, ?response)

Server:

in("rpc-request", ?uuid, ?method, ?arg)
response = call(method, arg)
out("rpc-request", uuid, response)

The example is obviously a bit simplified, but it's certainly easy to do in generative communication.

Message queues and tuplespaces are very different. A tuplespace allows pattern matching on tuples. And many tuplespace implementations do not provide monotonicity.
Show HN: Do you feel alone on Facebook?
Google Glasses, be more than Google +
I don't know how to tell you this, but query plans parsing is never the bottleneck in any database. You're just plain wrong.

Compiling queries to C++ is great for some BS bullet point on a website with BS claims of performance gains, but it's only a niche feature at the end of the day. There are more important things that should be getting tackled first: multi-node distribution, better fsync handling, etc.
Take the word "our" out, do you still disagree?

One thing you will notice about certain topics is advocates of one side or the other will nitpick inconsequential portions of sentences rather than actually discussing the topic.
(use 'clojure.repl)
(doc map)
A lot of people lost a lot of money during the flash crash, through margin calls, stop loss hits, etc. It also called into question the stability of our markets. If people lose confidence in our stock markets, then people stop trading on them.

If we have another flash crash, you can bet that the already-low volumes on the markets will be met with even lower volumes, which could damage our economic recovery. Most peoples' 401ks are tied to the stock market, and the last thing we need is a generation of un-retireable people because they lost a lot of their retirement on the stock market.
as in time spent to tune your hardware and software.

I do currently trade BTC. Not at a large volume though. My startups require more money than my hobby
It's fast and smooth, but the font sizes are all over the map. Especially in these HN comment threads. Some of the posts are readable, and some of them use microscopic type.
Let’s Get Louder: People for anti-harassment policies
> Why should the best hackers and mathematical minds be wasted on something so shallow as gaming the market?

Because it makes them money.
Thanks for the correction. I should not have said most. I tend to focus on ones that do have this property and forget about the vast number of supervised learning techniques.
Big news for the webOS team...good to see them moving forward as planned!
These are all great questions - but unless I was going to be entering a MRC (Monthly Recurring Costs) of something north of $50K, I expect most data centers would tell me to piss off. :-) Getting even 90% of that information out of your average data center even with a $50K monthly commit, would be problematic. Most data centers start hand waving when you ask them details about their internal procedures.

But - yes, once you pick up a cabinet, particularly if you are doing any kind of BGP multihoming, pretty much all of those questions need answers (possible exception being their internal procedures - at a certain point you just have to trust them to do their job. )
Texting And Driving: Driving while Intexticated [Infographic] |
Hypocrisy in the Profession of Education
The tl;dr here is: MemSQL is optimized for a different context.

That's all well and good, but as a consequence, it is only fair to compare yourself to other systems that are configured to take advantage of the same context.
Actually, no. You speak like database engines have to parse a query every single time it's run. That's not true - any reasonable database engine has a plan cache. Just because something is compiled into object code, doesn't make it that impressive.

In fact, making a plan completely stable can cause problems if the data distribution changes dramatically. I asked about this problem in a previous article about MemSQL, and the answer was that the plan won't expire unless you drop an index or add a new one. [1]

1. https://news.ycombinator.com/item?id=4126330
Why was that? and the hell bane.
I forget where I read this, but in an article by someone else I read something like:

"[There's something very sinister about a company that takes society's greatest engineer and science minds away from important tasks for humanity and diverts them to the task of optimizing ads]

A lot of people will say what you say about HFT, but have no qualms about Google and Facebook and Twitter. Why is that?
Apparently still no MP3 support for html5 audio. :(
Yes, I still disagree. I mean, even without that word there, the same premise is baked into the question the person I was responding to asked.

I disagree with your claim that I'm nitpicking and not discussing the topic.
I am on board with most of your points, I just wouldn't place too much emphasis on the "diplomatic" actions of America's past. You don't blame a country for its history, you learn from it, identify flaws in the system and change them.. (ie: Germany and Nazism, or U.S and slave trade).
However, a major problem I think is willing blindness, for example: how many Iraqi deaths have been caused by Bush's WMD charade? A lancet study suggests 100,000's... but the American consciousness finds such a figure unconscionable, so it is not reported.
IntelliJ does really impressive type inference in Groovy. I can write all sorts of dynamic code and it autocompletes surprisingly well. Not as great as Java, obviously, but impressive nonetheless.
Actually, it can have a significant impact but it's a corner case. It's a moot point though - as an example, SQL Server stores plans in a memory cache. [1]

1. http://www.sqlteam.com/article/what-query-plans-are-in-sql-s...

edit: incidentally, one of the corner cases I can think of is joining 10 tables, which gives you 10! combinations for the query processor to work through. This is irrelevant in MemSQL, because you can only join to another two tables, and you cannot do right outer for full outer joins.
Vestidos de dama de honor
Jesus, if those questions get you hired, I'm the smartest unemployed loser in the world.
Puma Espera patent fs
Puma Espera patent fs - Puma Mens Shoes Puma Womens Sandals Puma Womens Shoes Nike Mens Shoes Nike Womens Shoes Adidas Mens Shoes Adidas Womens Shoes
Brick-and-mortar stores themselves don't create anything. They buy in bulk and sell at a markup, thus adding liquidity to the grocery market. Imagine if you had to buy carrots by the tonne.
A lot of people lost a lot of money during the flash crash, through margin calls, stop loss hits, etc.

Well, if day traders lost money, who cares? That's the business they're in.

It also called into question the stability of our markets. If people lose confidence in our stock markets, then people stop trading on them.

True, but there was a fast recovery, and people are still trading. You mentioned that volume is low. I wasn't aware of that (just don't follow things that closely). Does that correlate to when the flash crash was? I'd be surprised if the flash crash rattled people so much that it still has an effect on market confidence.

Most peoples' 401ks are tied to the stock market, and the last thing we need is a generation of un-retireable people because they lost a lot of their retirement on the stock market.

Well, investment managers who control people's 401ks should not be trading during a flash crash. I mean, I'm just not so sure that it affected everyday people much.

Also, there are a LOT of things to blame the current economic scewing-over of people on, and the market would be near the bottom of my list.
What? Huh? Really? Why? What could that possibly have accomplished?

Never mind. Who cares.
Threaded Q&A's are now supported and will show up for any new IAmA's collected.

Reddit has still not responded. However, I know a moderator of Reddit went to the site based on the link source. It seems like they don't care.
Perhaps customers would pay up front with some sort of anonymous digital money.
Can someone explain this mindset to me? That there is somehow a fixed amount of mathematical talent in the world and if there are people whose preferences make taking a job in HFT optimal then society is necessarily worse off.
http://buzzdata.com/content/

They have TONS of free open data sets that you can play aound with.
Peak draw is less than typical draw. If the fuse blew at 16A, you'd only be able to use 12A. So they give you some headroom. But if everybody draws at 20A all the time, the building melts down. Soft quotas vs hard quotas.
Must-Have Redis Configuration Options For Production
Read more carefully next time. The post you are responding didn't say anything a bout MemSQL. It was talking about memcached.
1. As mmt mentions in another comment, that's the way the U.S. safety codes rate circuit capacity.

2. A 20 A circuit breaker is allowed to trip at 20.000001 A. Derating the continuous load provides the safety margin for reliable operation, even using inexpensive circuit breakers.
Rejection Letters for a faculty position
A tale of faculty-search woe :).
I don't disagree in broad terms, but I think it's also quite possible that some configurations of trading will result in the "support" tail wagging the investment dog. At least, that would be the expected result if you think of markets like a dynamical system; in non-trivial dynamical systems (which I'd assume the economy is), the usual case is that there are significant internal dynamics (feedback loops, attractors, etc.) that in a number of cases will modulate, and may even dominate, the movements caused by external inputs. If that transfers to trading, there may well be pathological market dynamics that have little to do with the fundamentals of providing services to (ultimately) investors. Whether the dis-value of those pathologies produced outweighs the value of the services provided would then be the relevant question. Viewed as a machine, does the machine that includes the HFT lubricants run better in general, or is the reduced friction offset by a undesired effects such as greater risk of malfunction?
What would prevent recruiter from putting fake data into these fields?
For salary it could be "negotiable" or "competitive".

For company name it could be name of recruiting company (not actual employer) or just plain fake.

Besides, sometimes employers don't want to advertise their openings publicly (may be to avoid getting flooded by irrelevant applications or prevent panic among existing employees).
Since you never wait on I/O and don't take locks, optimizing execution makes a lot of sense actually. All that's left is execution and network.

I'm not sure where you are getting this information. According to the MemSQL documentation, they have one and only one isolation level, READ COMMITTED. But READ COMMITTED takes write locks and blocks reads, but doesn't take any read locks. Blocking behaviour still (and should!) still occur.

It sounds like you are looking for dirty read behaviour, but from the literature MemSQL doesn't support READ UNCOMMITTED.

Update: Read a later FAQ on the MemSQL website. They are using MVCC, so write locks are irrelevant. My apologies to the MemSQL team.
Does anyone know if the software used for HFT is built in house or is there a particular vendor that specializes in this particular market?
can't do any excel type formulas or functions... that's a limitation...

very cool that you can copy and paste though. I've often wanted a way for users to copy excel data into an app as opposed to making them inport a csv...
This is something people miss entirely in this argument, the fact that lots of investors have trailing stop trades in and in a flash crash, those people get their asses handed to them. Then we immediately start having a credibility problem. Once you have a credibility problem, the end game is getting close. When you combine that with things like the MF Global bankruptcy where client accounts were stolen from, you start to think maybe the game is rigged. Or at least I do.
>Surely it's just a matter of deleting an email address from a table.

Actually, they have to add you to an opt-out table. If they just delete you, there's the chance that you'll get re-added at a later date.
It's not clear in the article whether this ruling only applies to the original GT 10.1, and doesn't apply to the GT 2 10.1. My understanding is that it applies to the Galaxy Tab 10.1, all revisions (in the same sense of an injunction against all versions of the iPad as opposed to only the original iPad). The Tab 2 10.1 is an iteration on the first one, not substantially different, so I suspect it's covered by this injunction.
Bitcoins perhaps?
Useful stuff, the outages had a detrimental affect on a lot of people.
Well, my disruption idea is to break the entire recruiting process into a value chain, and create little markets for each piece. So a company can list a position on the site (or maybe even on an existing site). But, instead of either a recruitment agency doing everything, or the company doing everything, they can break down the process and take bids on each step.

So maybe one person is really good at sorting a pile of CVs into a shortlist. Maybe another is good at phone screening. The company can outsource (via the site) any or all of the parts that go into filling a position. Providers (which would be individuals or small companies) bid for these tasks in an open marketplace along the lines of elance.

Effectively it is taking the roles of the recruiter and busting them down into pieces, and allowing different people to specialise into different things.

It's no more fleshed as an idea than that, but the basic concept is that a recruiter is considered by many to be overpaid, but fulfills a necessary evil. By allowing companies to directly outsource individual pieces they can utilise what they need from a recruiter without having to pay for the whole amount. And a skilled recruiter can get good work under their own banner without all the overhead of having to get an office and form a company, and themselves become freelance agents for hire.
Someone once made a blog with the same argument but used the comparison of a mechanic instead. Anyone know the URL?
"score another for the robots"

Not until this thing can beat water hose.
The lesson here is to never let your core business depend on another company's core business. You just don't want that kind of dependency.
I have to agree his list is a little unfortunate. It contains all the basic questions that you should ask (responsibilities/transits/power density etc.), but then also rather specialized things (PDUs, RFOs) that are a little over the top when you're going to rent half a rack without significant growth perspective.

That said, the colo should indeed answer all these questions. It's just that most small shops will not be able to make sense of the answers...

If you're a small shop looking to dip a toe into colo then a good summary question to ask is "Who else do you host?". If they have a few big-names to share then they'll probably be good enough for you, too.

Ideally ask for permission to ring up one or two of their reference customers and then actually do that. Colos don't like that very much - but if they outright refuse then you'll know to better look at another one.
Used Samsung Galaxy S IIs price Comparison
Hacker irked by reincarnation
It's not the day trader losses we're worried about. It's the average investor who had trailing loss orders in on P&G (just an example) who had to sell their positions at steep losses only to see the market rebound immediately leaving them with zilch. This attitude of "If day traders lost money, who cares" is missing the forest for the trees. Lots and lots of people got screwed by the flash crash and that starts to cause credibility issues.
Reading the actual injunction suggests that if it looks like the original Galaxy Tab 10.1, it's included in the injunction:

"Samsung Electronics Co., Ltd., Samsung Electronics America, Inc., and Samsung Telecommunications America, Inc., its officers, directors, partners, agents, servants, employees,attorneys, subsidiaries, and those acting in concert with any of them, are enjoined from making, using, offering to sell, or selling within the United States, or importing into the United States,Samsung’s Galaxy Tab 10.1 tablet computer, and any product that is no more than colorably different from this specified product and embodies any design contained in U.S. Design Patent No.D504,889."
Remember every student receives a set of books every year. Even if you distribute them very efficiently, you'll have the cost of transportation every year coming back. If you give every student a US$100 device they can use for many years, you'll end up spending much less during the education of the student.

That's one of the reasons to adopt OLPC like products.
State Department Looking to Monitor Facebook & Twitter