skysight-inc/HackerNews huggingface dataset:
This looks very cool. Were you also inspired by the Kodu Game Lab for Xbox 360? That game was probably one of the more enjoyable game making games I've played.
What would you define as helpful?

Just as a data point, let me tell you how my mind works because I'm the person your raw numbers won't tell you about:

Just getting the emails is likely to annoy me unless it's really, really earth-shatteringly useful and I've yet to ever see an example of this. I'll likely open the email and give it 1-2 seconds of scanning time to make sure I'm not missing out and to find the unsubscribe link; if I can't find that, I'm hitting the spam button which (for a service like gmail) will in some small way affect deliverability for other users.

Nagging me about abandoned tasks is really irritating and it would teach me that using the service "improperly" is likely to lead to my inbox filling up with no-shit-sherlock emails, and would make me want to avoid using the service at all just to avoid this fate. If I abandoned a task, I did it deliberately and really don't want to be punished with email.

Begging me to come back because I haven't logged in in x days is likely to piss me off too. If I haven't used a service in x days it's because it wasn't useful to me and an email isn't going to magic it into the opposite. If anything, you might actually be offering me social proof from (my past self, not others) that the service isn't useful!

When I'm evaluating an app during the free trial I've likely made up my mind within the first 30 minutes, if that. I'm looking to see if it's usable, useful, and beautiful, and if I can't determine that from experiencing the app, email isn't going to save the day.

If I abandon it within 24 hours I'm almost certainly never coming back, except to cancel the trial if I've already entered my credit card details.

If there's a high abandonment rate, emailing people after a trial is over to ask them what pissed them off (giving them the option to submit anonymous comments) is more likely to lead to useful information that will increase retention by improving the quality of the app. But nobody is ever going to say they abandoned a service because they didn't get enough email!

Email has never persuaded me to use an app I've abandoned, but I begrudgingly accept my fate of more email whenever I sign up for a free trial as non-monetary price I must pay to experience the app. If irritation is a currency, apparently I'm broke.
From Data to Dashboard in 5 minutes - see our demo
"It might stand up to a good solar blast, but that's hardly a surprise, and if it's disposably cheap, who cares?"

the phone itself might be cheap, but putting it up there is most certainly not (yet)...which is why most things that are designed to go into orbit are expensive :(

would you care to spend 150k+ to put a $300 cell phone into space for 2 weeks?
Shit, that's scary.

I've never had any traumatic experiences like these, but I always picture myself seeking revenge.

How did your friend cope with the anger?
Lots of people use the Dow precisely because it is a bad indicator. If they don't like the conclusion they get with something better, like the W5000 or the S&P500, they can try it again with the Dow for a "second opinion."

The whole methodology is a joke anyway. If you evaluate a huge number of search terms, some of them are going do better than others. So terms that might mean something ("debt") get mixed up with terms like ("color") that got lucky.

What you have to do is come up with one strategy that trains a classifier on the combined words, tunes it up with logistic regression and derives optimal trading actions from that. And you've got to factor in what you're paying to the broker and the market makers.
Burbank, Orange County, El Segundo.. hard to tell tho because you don't find out till later
Show HN: Get from LA to SF and stay there for 2 nigths only for 50$. Round trip.
Sounds pretty cool, but it would help if the post did some compare/contrast with other Java clustering oriented libraries. JGroups is probably the elephant in the room, but there are things like Jini (Apache River), JXTA, JSDT, etc. that could conceivably have some overlapping applications with this.

That said, definitely "starred" on GitHub and I will be very interested in playing with this library.
The only part that's really being used in the CPU, memory, and sensors. New batteries are installed and new radios and antennas are used bypassing all the on-phone radio equipment. This really is nothing more than a way to hype up a not so useful project. There are dozen of short to medium life cubesats that are launched every year with off the shelf components.
I can confirm this, I live in Southern California and I have had multiple cards stolen. I try not to use my card anymore but always remembering to get cash from the bank is really inconvenient.
> If it were called the Apple Hackers' Conference you'd be complaining that Apple was trying to be hip.

Maybe there should be an Apple hackers conference for those of us who couldn't get tickets.
You can probably change permissions in either the plugin or jQuery such that any user can do this.
So much for the myth of the stupid criminal being kept in jail by smart authorities.
If LGPL works for you, you may want to look into http://www.mlpack.org/

I'm not really sure how they compare since I haven't really used either library, but there does seem to be some overlap.
libsvm and liblinear are nice libraries for training SVM and linear classifiers. There seem to be two ports of liblinear for C# (I haven't tried them):

http://www.csie.ntu.edu.tw/~cjlin/libsvm/
My experience so far: http://pastie.org/7724611

Tried installing mono-complete, but still not working.
It's for editing you own data on a site, I'd say. But every user must be a superuser then... I wonder if that presents some non-avoidable security issues in this case.
In the EU it's also for cleaners (all liquids I assume) etc. not only food.
This study needs further studies for it to be accepted. Remember that human emotion is not easy to determine since all of us have different motives, different personalities and different perspectives. How much more when we study a certain behavior in social media. True that there are various metrics and analytic to show a consistency of result, however this result will often change in due time since social media such as Twitter and Facebook are quite dynamic.
As soon as someone figures out bitcoin derivatives (e.g. options), you'll be able to buy or sell the volatility. More broadly, such a development may also stabilize those price fluctuations.
Good jobs are nearly impossible to find. That is why living in a great city is so important. Talent will never have the type of leverage HN believes it does except for in rare individuals who have built social credit along with their skills.

Now that I'm almost 30 and aware of my mortality (my mother passed away recently, which had more to do with my "mid-life crisis" than chronological age, since I'm still quite young by the standard outside of Wall Street and VC-istan) I'm starting to wonder about the best way to change this. How do we take this garbage-pile of an industry and fix it? How do we clear away the crap and build something we can be proud of?

Social trends are such that we're on track for a violent worldwide revolution (widespread, permanent un(der)+employment will be the norm by 2030) unless we fix our society in a major way (basic income, necessitated by said underemployment) but we also have the tools available to be smart and not burn/kill our way to a better world. We don't need to overthrow the corporate bastards with force (at least, I hope we don't; the problem with real-world holy wars is that the unholy have guns and better aim) because with technology we can outperform them. We should take this opportunity to rewrite all the assumptions, if we can.
Don't mention it - your application seems pretty great, I wouldn't want to see it's grand opening on HN marred by recruiters and spammers.

Also, make sure you plan for longer term - 1:1 engagement rarely scales with explosive growth. :)
At Arco they only accept debit. I would never use a debit card if I could avoid it. There are much more protections and insurance on credit card transactions, but if money comes out of debit, its gone.
Many many moons ago I had a similar idea, although my idea was to spot patterns of eBay purchases. I had a feeling that people in various parts of the world would buy certain types of items depending on economic trends. Once I had identified purchasing trends, it seemed to me that I might be able to predict trends.
I'm surprised this is new to HN. The article is from 2010 and ATM skimmers have been around for 15+ years. They've become significantly more sophisticated over time. Back when I was involved with this stuff 9 years ago most people were making skimmers you had to hook up with a USB cable to get the data. Now people are using cell phone hardware to transmit the data automatically.
Quote: "If there is a best philosophy, it is surely the one which maintains that every philosophy is doubtful."

By that reasoning, it's "surely" not possible to assign any philosophy the label "best" without reservation.
That is a pretty big misunderstanding of how Facebook operates. If Facebook put advertisers ahead of users, it would not be at 1B users and it would not have been around for 8 years, and dominant for many of those years. The business model is primarily to make people happy to make sure to have their attention, and secondarily to sell ads against this attention.

I've worked at Amazon, Google, and Facebook. The core characteristic of each of these companies is that they are all ruthlessly focused on their primary customer as the user, not as the retailer or the advertiser. And it is for this reason that they get to massive scale and become dominant. If you don't get this, then you won't understand why Parse is a clear fit.
A lot of the radiation that the sun's core emits gets through its surface without interacting with it much.

You can infer that from http://en.wikipedia.org/wiki/Sun:

Temperature:
- Center (modeled): 1.57×10^7 K[1]
- Photosphere (effective): 5,778 K[1]
- Corona: ~5×10^6 K

=> The sun's surface is about its coolest part. Its core is about 3000 times as hot. That's where the solar heat comes from.
In many states, it is reserved for someone with a certificate and there are very strict rules on the words use.
Truth is the real money happens once you leave those sites. Don't trick yourself into depending on them to get work.
Are there better reasons for torturing mice?
This might be an interesting backend for http://createjs.org/
2012 shows a drop down to about 150 from 200 in 2011. So there is a drop off. I think? Or perhaps the graph is just horrible, it's very hard to tell.
There's no mention of compounding factors like an ageing population and improvements in detection. Without this there isn't much one can read into this.
UK Defamation Act 2013
arjn isn't saying CISPA itself is underhanded, just that the tactics employed to push it through may be. He said CISPA was unpopular, and you can't argue that.
The chip is authenticated with a public/private key challenge/response. The private key is never sent to the ATM; the chip actually runs a very small program/system that can generate the correct response to the challenge using its private key. The chip is powered by the contact with the ATM.
My assumption was a pun, "I'm a let you finish => "Omelet you finish"
At this point, I wish they would break-up the conference into iOS and OS X or have some paid engineering support where we can facetime / screen share with an engineer.
It's not so much that Google "screws" Facebook as they changed their policy so that apps can no longer push updates. ALL apps must now be updated through the play store. This title is misleading at best. Facebook is no more screwed by Google than anyone else with an app.
Interesting point and angle.
Six months on, Windows 8 sales are a mystery
And those packages are installed: http://pastie.org/7724640
yeah! I'm using something called "ultimate meal":
http://www.amazon.com/The-Ultimate-Life-Meal-powder/dp/B0001...
Setup VPS & Prosper202 ( http://prosper.tracking202.com/apps/ ) else just pay a bit more the hosted version at Tracking202.
These are in such low orbit that they're still protected by the Van Allen belts. They'd get obliterated by radiation if they were much higher or around the moon, etc.

It also isn't the first phone in space. The UK sent on up earlier this year.
There's a startup in Chicago called matchist that is trying to do a better job of matching freelance developers. http://matchist.com
What I find funny - and I like a lot of Rand, though I've understood the books completely different as most Americans - is that many of the Americans that quote and evangelize Rand would be "parasites" in a Galt world, e.g. all the Republican politicians who never produced or created anything in the Galt sense and are paid by the state.
Ignoring methodology concerns for a moment, there have been times in the past where people have found statistical regularities like this in the stock market. Sometimes people have made money on these discoveries. If not someone else will as soon as the researcher publishes. But making money on them gets rid of them, and given that this is now publicly available information those regularities certainly no longer exist, if they ever existed in the first place.

EDIT: Ok, I couldn't resist the xkcd reference:
http://xkcd.com/882/
Of course a fully-illegal thing will create a larger black market than a partially-illegal thing, but that's only a quantitative difference; the economics of the resulting black market remains then same. As long as they are outside the legal system, they will experience more violence, and unscrupulous people will continue to falsely claim that this justifies further marginalizing and regulating such activity.
Show HN: Klimt - Removes noise from your Twitter TL.
What do you do when you leave those sites? Where do you find work? Are those sites a stepping stone to getting started (building network/portfolio, etc)?
Expand the Number of GPIO Pins on the Raspberry PI | Mark's space dot com
Is it verbosity that makes it unreasonable to you? What would your ideal way of describing a build be?
>Mathematician Stephen Wolfram has started dissecting data for more than a million users using his sophisticated technology.

Were "sophisticated technology" is some trivial analysis of social media messages for trends...
What if the title of this article is wrong? Isn't it possible that American investors are loose?

If you believe the hype, foreign investors are scared of failure, less willing to take chances, etc. Yes, investors have different risk tolerances, but most professional investors are not entirely risk averse.

Looking at the performance of most venture capital funds, and the venture capital "asset class" as a whole, over the past decade-plus, I think more intelligent investigation of foreign investors' preferences would reveal that there are very good reasons they aren't chomping at the bit to throw money at every tech entrepreneur in need of a few million dollars.
A lot of markets are "regulated", e.g. the food market, there is a lot of thing you can't mix into food (even in the US). Though no one would call this market "regulated".
The launch was kinda neat too:

http://www.youtube.com/watch?v=V3L7crGudVU

Finless rocket? How does it steer/stabilize? Do the engines have fine control over which side their fire perhaps?

I guess fins are useless outside of atmosphere anyway.
What I find most of new users of Maven fail to grasp is that it's not designed to work as Ant or Make. There's a reason jelly support was dropped in M2
The best thing about Maven is that once you understand what it's supposed to do, it does a great job at it. But when you find your self doing more custom stuff, it's better to extend your build process with the tools which are designed for this and let Maven handle the stuff it does fine.
And yes, Maven support in Eclipse is... crap, because Eclipse is designed around Ant-like tools.
Sorry to the guys who maintain the m2-plugin because it has to be a lot of work, but if you're using Maven, you'd better go with NetBeans or any other IDE.
In my case, I do all the builds from the CLI and don't bother to integrate Maven with the IDE.
How does DDoS mitigation look like? Do they use realtime dashboard with similar visualization to cut off hotspots?
You should check out OpDemand's EC2-based Ruby on Rails stack. Workflow is also very similar to Heroku (one click deploys, or `opdemand deploy`) but you run it off your own AWS account:

http://www.opdemand.com/docs/ruby-on-rails-quick-start-guide...

The stack automatically provisions, monitors and maintains an ELB, EC2 Instance(s), RDS and all the networking and key pair infrastructure you need. Most Heroku apps don't even need to be modified due to OpDemand's use Procfiles and standard dependency management. Deployment automation is all open-source Puppet hosted on GitHub.
Not sure if this is off topic, but shouldn't it be simple to make a high altitude balloon out of a material that doesn't explode so easily when it gets to the lower pressures in low earth orbit?

Or even some kind of contraption that slowly releases gas from the balloon as it detects lower pressure in the atmosphere to help it maintain altitude and prevent the balloon from rupturing?
Ask HN: What do you do with your failed startup?
1. If you have a few paying customers, what do you to help to move on?
2. What about the source codes?
Any other learning points?
Speaking as a PhD student in machine learning-

Implement the algorithm yourself, first, in Python+Numpy. The only reason I feel comfortable with Gaussian Processes and SVMs is due to writing code to solve them manually.

Once you're happy with the basics, and can test your ideas with code you intimately understand, optimise for speed by using a library like this.
A simple Web crawler with Python Twisted
When I saw this on HN, I rewatched the Cosmos episode ("The Backbone of the Night", aired on Nov 1980) where Carl Sagan is lecturing sixth graders in a Brooklyn school (the one he attended as a kid) on techniques to search for exoplanets and then says (from http://www.american-buddha.com/backbone.night.htm):

Well, both of these methods are being used, and by the time that you people are as old as I am, we should know for all the nearest stars whether they have planets going around them or not. We might know dozens or even hundreds of other planetary systems and see if they are like our own, or very different, or no other planets going around other stars at all. That will happen in your lifetime, and it will be the first time in the history of the world that anybody found out really if there are planets around other stars.

His stress on "even hundreds" shows that even he thought this figure was unlikely. Sagan was 47 at that time, so assuming the kids were about 12, he was hypothesizing into 35 years to the future, to 2015. He would have been pleasantly surprised at the progress so far, I think.

I wonder if any one of those kids have looked at this page and thought of that day.
Out-of-sample backtest or it didn't happen. Out of a bunch of random search queries, chances are several of them will be "predictive" of futures moves in an index. Big whoop.
Having been part of student protests in the past, I believe this is one of the worst ways to handle a protest.
Never mind. Fixed by:

$ apt-get install libsdl-mixer1.2
"Not publishing your code is anti-science" ... "open source is widespread and growing"

I've noticed that few people realize that "publishing your code" and "open source" are two overlapping issues, but they are not the same and the needs of one field are sometimes opposed to the other field.

Open source necessarily implies that the people who receive the software have the right to modify the software, redistribute it with or without changes, and be able to do so for a charge.

No one has been able to tell me why software for scientific publications requires the third of those abilities. Everyone is agreed that access to the code and the ability to modify it makes it much easier to review and understand what it does. I can also understand the need to share modifications with collaborators, in order to help carry out the analysis. But I don't see why published software can't have a prohibition on charging a fee for using modified versions of the software, or services rendered which use the software.

My first question for you, then, is: do you need the ability to commercialize someone else's software in order to provide good scientific review of their publication? More specifically, what sorts of review would that prohibition eliminate?

In the other direction, I have scientific software which I sell for about $30K. (This is not hypothetical - I really do have this). Customers get the source code under the BSD license. This falls into every standard definition of "free software" and "open source" software. There's even an essay (at http://www.gnu.org/philosophy/selling.html ) encouraging people to sell free software.

If I publish a paper which uses the software, then am I obligated to give my peers access to the source code for no fee? Or can I publish the paper, say it's available under a BSD license, and charge $30K for access to it?

So my second question is, are there limits on what I can charge people in order to get access to my open source software, which was used for a paper? If so, what are they, and what is the ethical basis for that judgment? (For example, should it be "fair, reasonable and non-discriminatory"? Can it cover development costs? Distribution costs? Web site development costs?)
I would say that the bulk of the work product of the depression industry is bullshit.
Urban Airship integration with Squiz Matrix CMS
Show HN: platform that solves the biggest problem in content marketing
Ah, that ruthless focus on keeping the users and the developer community happy must be why Google killed Reader and will probably kill Feedburner soon, and why so many great products got acquired and then killed by their new owners a few years later.

You're right that if you believe what you just declared, then Parse's future at Facebook seems reasonable. You're also right that we won't convince each other of our views on this, so I guess time will tell whether Parse continues to thrive or gets shitcanned in a few years.
Interesting. I havent used co-routines before.
It's tough to see what this is about at all, and yes, you need to have more to say what it does.

I found this:

A computer aided asset division process
for legal professionals

I'm out ...
Thanks! I was actually (and perhaps naively) thinking only of a radio relay satellite, not one with optical sensors. Your description is much more interesting.

Once this happens -- once cheap optical survey satellites come into existence (and they will) -- governments are going to go completely nuts. Right now, governments can put pressure on the few survey satellite operators to blur out certain sensitive locations (as in a recent story posted here). But once cheap satellites come into existence, that option will evaporate.
Nuclear power stations are safe in the same way that modern airliners are safe. It may be possible to perfect machines but people will always make mistakes.
Well, yes, if "maintenance enginner" means janitor then obviously there is a bureaucratic problem.
Wanting it more
Update : Backtrack Kali Linux 1.0.3 released
there is a well-known result that aesthetics affect perceived usability

Other things being equal, that is true, but in the case of flat design other things are usually far from equal. The loss of affordance with flat design can be crippling.
Caffeine works by blocking adenosine receptors. If build up of adenosine can alleviate depression, can its opposite cause or aggravate depression? Is my coffee making me sad?
Sometimes Enough Money Is Enough
See https://news.ycombinator.com/item?id=1290106 for a former discussion.
Bruce Sterling: Fantasy Prototypes And Real Disruption [video]