skysight-inc/HackerNews huggingface dataset:
It's kind of strange that they built something custom instead of just implementing it as a couple standard HID devices with an internal hub.

Depending on the USB chip/microcontroller used, it can be a lot easier to just toss in a bunch of vendor-specific requests instead of adhering to all the requirements of an HID-class device (though I haven't analyzed the Xbox controller itself, so I don't know if that's what was done).

Also, there's no need to use an internal hub, as a single USB device ("function" in the USB spec, IIRC) can have multiple "interfaces" that implement different (or the same) classes, such as HID, CDC, mass storage, or vendor-specific.
Not too much mystery when somebody is looking off-camera while taking a webcam shot... he's looking at the screen to click "take picture"! But don't tell the ladies or they'll stop emailing me.
This is exactly what they did with the "Designing Obama" book on Kickstartr (http://www.kickstarter.com/projects/simplescott/designing-ob...).
Tell HN: English isn't your native language? Get inside.
I've just launched iRosetta ( http://www.irosetta.com/ ), a StackExchange powered Q&A site for everything related to language. I'm struggling to get a few key early adopters and thought some hackers here might be interested as most of you are already familiar with the StackOverflow system.

In a nutshell, if you're not sure about a particular translation or have a question about grammar, just ask your question there. If you're a seasoned linguist, get involved and answer some questions!

PS: Suggestions on getting this community off the ground are welcome.
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Can someone venture some guesses as to what types of apps will be created? That screen seems like a terribly limiting factor for apps...
I also take it as an indication that the person saying "he's wrong and pig-headed" is also so entrenched in their viewpoint that they are not likely to examine evidence to the contrary either.
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Or you could just use the print version.

http://www.puffinwarellc.com/index.php/news-and-articles/art...
Taubes' take on the caloric balance equation (thermodynamic law) is fascinating.

Change in energy stores = Energy intake – Energy expenditure

According to my biochemistry professor in college, this had one - and only one - interpretation: The change in energy stores is controlled by energy intake and energy expenditure. The right side of the equation controls the left side of the equation. Also, there was an implied "just eat less and exercise more" (that energy intake and expenditure are independent variables).

But Taubes suggests that the causation could be reversed, and that energy intake and expenditure are dependent variables. In other words, a metabolic change could cause a change in energy stores, and energy intake and expenditure would change to match.

That (amazingly!) translates to: if you are losing weight you are likely to be less hungry and likely to have more energy. Or perhaps, if your metabolic state is such that you are losing weight, your hunger will adjust to match your activity level. Or even, if you're burning fat, you will only eat to make up for what you aren't getting from stored fuel.

It makes sense to think that if your energy stores are releasing fuel into the blood stream you would be less hungry (I'm assuming that hunger signals are a function of available fuel to some extent).

Naturally, we eat for nutrition as well as fuel, so I suppose it can't all be broken into thermodynamics, but it's an interesting way of thinking about it!
I guess I'm not very creative, but one of the first thoughts to pop in my head was "I would really like to have a day planner on this thing".
Plenty of apps don't need rapid refresh, or particularly fancy graphics. Weather apps, stock tickers, crossword puzzles, Sudoku, choose-your-own-adventure type games (even something like the old Adventure), a note taker, shopping list, fitness tracker... Combine these with the Kindle's wireless cellular link, add a little imagination, and I feel it has potential.
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Hopefully some sort of folder system, since it seems Amazon can't do it.
The SVD connects the four fundamental subspaces of a linear system. I was fortunate to receive this great insight from one of Strang's lectures. I highly recommend you watch one of his videos online on this particular topic.

This post doesn't do full justice to the beauty of the SVD. Intuitively, you are trying to compute a transformation that diagonalizes the covariance matrix of the data. Computing the covariance has two problems: 1) this is a O(n^2) operation and 2) can lead to big numerical errors for really small values in the matrix.

By creative use of elementary matrix operations, the SVD gives you the transformation on the original matrix. If you are interested in just the first few singular vectors, certain math libraries also support an economical mode that does just this.
I'd love to play chess on it + cross word puzzles.
I think between the Kindle, Nook (it runs android), and the Apple Tablet, we're going to see some of the next great publishing companies emerge along with the really smart dinosaurs evolve. "Print Content" will no longer just be words on a page, but something interactive that belongs in the 21st century. What if your books/newspapers/magazines were hybrids of software+traditional writing? That thought kind of gives me the chills... in a good way.
The 15 cents per megabyte charge could be limiting at first. I don't know what an application might use and how frequently, so it might not be a concern at all. If it is, i'm sure the pricing will eventually go down to a number that is so low that it no longer is a concern.
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Well, they've still got at least a year or so to work on it, since it's unlikely Django will be running on Python 3 before then...
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Anyone using Lua for web apps? What's the current state ofthe ecosystem? Anything good, stable, and easy to deploy?
Publishers are yet another industry where much of the value chain is locked up within the one organization. This is historical because of the economies of scale needed to turn a profit in the area.

With more free markets in all areas, and lower costs of distribution, many of those reasons do not necessarily apply anymore. What you may see is the devolution of the publishing business into smaller parts, and each part completed by a different business/individual.

For example, I might write a book, find an editor on a freelance site, then find an artist, and a PR agent. I could even perhaps hire a manager who co-ordinated the whole process for me. I might then either self-publish (LuLu) or put it straight to Kindle. In the past these were all handled in-house, and the publisher had high overheads for all the staff and accompanying infrastructure.

I think the internet will continue to break up these value chains into smaller compononents with more competition at each step. Publishers will only go with big-selling authors, and probably only after that Author finds success independently - kind of like a band signing a deal after releasing their own EP and making a go of it.
Amazon turns Kindle into a platform
That's what the "vs. S&P" column is for.
Firstly thanks for all the feedback.

1. The second option.

2. Sounds ridiculous, but will change this.

3. Will make better fake company names.

4. Fixing.

5. Fixing.

6. Ah problem between the website and the application servers (we host them separately).

7. Fixing.

8. It actually has been amazing for the traffic we get.

9. The blog is hosted on the Google App Engine, our actual application is not.
I think you may be confusing the public consciousness with mainstream TV news coverage. A lot of things, even important things, happen in the world without being covered by the news media.
http://www.irosetta.com/
The talk was done at 5:30, in the following four hours it was trimmed down, intro voice & music added, uploaded w/ a photo taken at the event, found by someone here, and posted to HN. Got to love the internet.
Can you send me an email simon@rhinocloud.com I've had tons of people signup today without any problems.
I'm not a StackOverflow user but I assume the askers and responders are almost all professional developers.

Your site is bound to attract "amateurs" who are just learning languages for disparate reasons. Nothing wrong with that, but a better analog to StackOverflow would be a forum embedded in a website for professional translators and the people who hire them. IIRC http://proz.com does have a simple forum for that but it's not very good.

I'd volunteer to answer questions on Portuguese, but there are none right now. I might check a few more times later. But that's just because I saw it here on HN and would be glad to help you getting it off the ground. Otherwise I wouldn't bother -- unless it was part of a professional translation site and participation had a positive effect on my chance of getting translation jobs.
Tons of people already outsource your payroll which is already in the cloud.
Yes, and this combined with Amazon's new royalty scheme:

http://www.businessinsider.com/henry-blodget-amazon-fires-to...

Will create really big changes in the publishing industry.

I just hope that people outside the U.S. won't have to wait years to benefit from these changes (because of legalities).
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Doesn't this come up every generation?
Am I the only one who is dreaming of an email client? webmail doesn't do it for me. A real client would be amazing.

Seriously though, let's consider. I hear of tons of apps that are really clever on the iPhone store, and many of them do not use the camera, gfx, gps or accelerometer. It's true the iPhone has more computing power, but both have 3G.

My mind's not in a state right now to do a real comparison, but in my opinion, quite a number of the clever and/or useful iPhone apps I've seen could be ported to the Kindle.
(this is not of course to say that's what should be done, or even that would be the limit- after all, Kindle has a much larger screen- just as an idea of the spread!)
Let's hope they put wifi in the next gen Kindle's. It's crazy that they left it out.
I'm going to have to disagree I really like him http://rhinoaccounting.com/rhino.png
After I learned all the details in grad school, I found out how to implement it in a real world setting:

[U,S,V] = svd(X)
what can I do??
I once had an easyjet flight where the "overweight" penalty on my bag cost more than my ticket.

If memory serves, the penalty was either 7 euro or 12 euro per kilogram.
Another good one:
http://www.ams.org/featurecolumn/archive/svd.html

and its HN thread:
http://news.ycombinator.com/item?id=736618
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Ask YC: Finding code on the internet - what about IP Rights?
What's the deal with code snippets on the internet? If the idea is to share code, shouldn't these things be clearly licensed? How long/complex does a bit of all-rights-reserved code have to be before you are breaking the law to use it in your own program, and do people do this anyways?

Especially if you're coding for work, it seems like this could either be a pain or get you into a lot of trouble. What's the common practice regarding code found on newsgroups, mailing lists, fora, blogs, and snippet sites?
No offense taken, and sorry if any was given. I did not know about Moniker. Thanks for the info -- very interesting and helpful.
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This recording contains explicit language and is not appropriate for all viewers. Sometimes you've just got to go with the brand, you know? ;)

Edited to add: This talk is very, very good -- much of it is what you've heard from 37Signals before, but it is well delivered and there are unique insights too. (In particular I like how people are socialized into maladaption to the preferences of professors. Oh, and I agree with this: "Our most important competitive advantage is good human writing" -- it is probably my most important skill that I talk the least about.)
Perhaps they are smarter than we think, and are more interested in a pay barrier for premium content from their existing content producing users?
I was picturing an AST, with the parentheses in the context of that. However, you're quite right that context seems to have a specific technical meaning here, and not the general one I was using.
Didn't quite get the "info:" operator.. what info?
Ask HN: Career path for founder of a failed venture backed startup?
Hi guys, this is anonymous for obvious reasons.

Say I'm the founder and CTO of a venture backed startup. We had a good run but, for a variety of reasons, the company fizzles after a few years (and series A and B).

Now I'm a 26 year old college drop out (from a top tier school), with some pretty cool experience (I've written huge software from the ground up, ran a company, hired/trained a dev team, etc).

So, what are my job options? I have the contacts/team/etc to start another company, but I don't have an idea that really excites me and I feel like I need a few years without the huge ups and downs of a startup. (I have offers to go be 'director of engineering' or something similar at a few other startups, but I'd like something a little slower paced for a while ...)

Without a college degree can I go to the big guys (Microsoft, Google, etc?). Can I go become an associate at a VC firm (it actually seems pretty fun, and I think I could do a better job than a lot of the associates I interacted with ...)? Any other career ideas?
Uh-oh...MBA in the title. Cue edw519 popping in to tell the tale of how all he remembers from b-school is his professor telling him that a degree in business is a degree in nothing :)

http://www.google.com/search?q=site:news.ycombinator.com+%22...
Only after this talk did I fully understand the difference the company he is trying to make / building (37 Signals) and the path that so many others follow.

Great advice that should be considered before any company brings on VC money.
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I think the explanation here is that sadly, innovation does not always lead to success for its innovators, at least not immediately. Several of the underperforming companies are doing very innovative things, but their stock price could be lagging because of internal scandal, bad timing/location, bad investments, or just the state of the economy in general (smaller luxury market, etc.). The first to market always has a significant advantage, but as history has shown (Netscape, Creative Nomad Jukebox), that advantage is not everything.

Affymetrix, for example (AFFX, -43% vs S&P) is working on making different medical treatments for different people based on genetic variations (metabolization rate, etc.). However, much of their work is still experimental, and they reported a significant negative net profit in Q4 2008 (http://www.google.com/finance?q=NASDAQ:AFFX&fstype=ii). They were and are a speculative investment, and their stock price reflects the market's skepticism that they will capitalize on their innovation.

That said, it almost certainly is innovation, and it will inform and inspire future scientists who may eventually make it profitable.

Additionally, many of these companies target what the UN calls "developing countries" and the stock market calls "emerging markets". These are long term investments, based on worldwide trends of previously poorer countries (BRIC) "emerging" into Western standards of living and, consequentially, becoming consumers of our shit. While these may be profitable eventually, their "innovation" may be just learning the needs of a new, poorer but still technologically literate market.

Also, some of these are just poor calls on FC's part. Nokia 2 years in a row?!? Come on.
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You can buy a basket of speculative stocks (small market cap companies) and have a few winners. Having a convenient place like that to play your money changes the scope of a good VC or Angel investing opportunity. They become exceedingly rare.
Just to follow up on my earlier comment: so the new Firebug crapped out the very first time I tried to use it. I've already reverted to 1.4.

I don't understand this project. Serious web app developers are, I guess, not their target audience.

Edit: it's not like 1.4 works either. I set breakpoints and they just get ignored. Grrrrr.

Edit 2: so I resort to putting "debugger" keywords in my JS and Firebug breaks into the debugger at an entirely different source location. Grrrrr ^ 2.
When finance industry gets into trouble, the govt will step in to fix it. (It may be by bailing out big banks etc.). Indirectly all players in financial market benefit from it. (see the stock market gain from bottoms last year).
In this context a financial startup is in a much better position when compared to startups from other domains.
everyone loves to reference the SVD because the concepts are principled and intuitive. but i've found that, as often as it is brought up in conversation, its rarely used in practice. anyone here used SVD in a production setting?
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Have you considered going back to finish your degree? If you think you might want to finish it at some point, the sooner the better, because it will only become more difficult to go back to an academic environment. Also, school could give you a chance to step back and "relax" while you figure out your next play.
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whoops, sorry about that:
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S3 is not really a file system. It's more like a key/value store for arbitrary data. If you wanted a filesystem-like interface, you'd need something in front of it.
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Agree. If you want to learn more about Lua+C check out sources of this awesome game: http://springrts.com/
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As scary as this may be:

The financial services industry. I work on a large retail trading site - many of our customers and a majority of our clients still visit our site in IE6. They have no choice, and some of them do not even realize they have no choice.
I've never been able to get Linux to give me this many file descriptors. If you can convince your OS to give you enough fds, handling 100,000 idle connections is no more difficult than handling one idle connection. The OS feature that polls for activity is O(1) over the number of fds to poll. The memory your app needs to keep each connection alive is minimal, and of course scales linearly.

People like throwing around the number 100,000... but this is really nothing to be excited about. Having 100,000 users is much more exciting than having 100,000 sockets connected from 127.0.0.1...
"We've heard from lots of developers over the past two years who are excited to build on top of Kindle"

So, why didn't they do nothing for two years?

One week before Apple supposedly will announce the iTablet, Amazon creates a press release saying a limited beta of the Kindle SDK will start next month!

If you are the market leader, why would you wait two years for yours competitors? Doesn't make sense to me.
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I'm also using Orbited on my project Colorillo, but it seems that it will be superseeded by js.io (http://js.io/). I was having a look at it but its documentation is even worse than the one of Orbited :)
should be ?

they connote which bin to place the item in..
I was on the verge of "jailbreaking" my kindle just so I could make a more effective Instapaper client.
"Sure, some people are better at some things than other people. Some people are hot and some people are ugly."

No, I meant even more literally--the idea that some people are fundamentally higher or lower quality, that some people have more worth as a human being than others.
Thanks for your feedback. However, I'm not sure why this site would be more likely to attract "amateurs" than StackOverflow. StackOverflow is not part of a freelancer marketplace either (the career site was only added very recently) and yet manages to get quality content. Thanks for your insight nonetheless, I will consider integrating the Q&A part with a "marketplace" in a second phase.
Please define financial startup.
Don't most people use NNMF instead these days?