skysight-inc/HackerNews huggingface dataset:
The 2008 RAND study has been widely debunked. Any idea of the RCS(X-band) of a F-22, or a F-35 for that matter?

F-22: 0.0005 m2

F-35: 0.0015 m2

F-16C: 1.0m2

Su-27/Su-30 Flanker: 10.0m2 (China has this series and J-11 "Flankers" built domestically)

Su-35 (Advanced) Flanker: 1.0m2 (Russia only)

From the front a stealthy F-35 is basically noise against the background using X-Band radar. The latest L-Band radar on a Su-30MKI (Bars N011M) or Su-35 AESA couldn't actually track a stealth target but might get a faint return.

My comment about the missile is that most missiles don't maintain full thrust the entire flight over 30NM - they have an initial boost to Mach 2.5+, then they coast at lower thrust until reaching the target. Newer missiles might have terminal boost but this would likely not be enough to hit an F-35 that sees the missile on EODAS. Very few Russian (or US made) missiles can shoot down a jet fighter at 20NM+ when that fighter detects the missile.

I'm familiar with the strengths and weaknesses of the Su-27 and Su-30. The Su-27 OLS is the best feature against a stealth adversary but its nowhere near as good as the F-35 EODAS.

A F-35 would be almost impossible to track at 30NM using AESA radar much less a F-22. An F-15C with the latest APG-82 AESA can't track a F-22 for radar lock at 1000 ft range so what chance would a Su-30 have at 30NM. The SU-30 pilot would have to manually cue the OLS without radar. Auto-cueing a heat source would lock onto the flares.

In around 60-90 seconds into the merge an F-35 would be within range for an AIM-9 Sidewinder missile shot while the Su-30 pilot is trying to cue the OLS manually. Most recent dogfights are over in under 2 minutes.

Take a look at this documentary on the F-22 program.
http://www.youtube.com/watch?v=T-Sh1SAaJz0

And here is the RAND press release about the previous report you referenced. http://www.rand.org/news/press/2008/09/25.html "Those reports are not accurate."
That was strangely hostile.
You seem to think these programmers are content with simply learning only what they need to know and calling it a day.

As a self taught developer, I find it offensive that you think I would go through all the trouble of teaching myself how to code, and then rest on my laurels, like I wasn't inherently curious and thoughtful.

Since learning Javascript front to back, I've developed a curiosity with strictly typed languages, assembly, computer science, Big O notation and other (what I consider) hardcore disciplines in computing.

Javascript was my gateway, and I love it to death, but I'm not a javascript developer any more than a C developer is simply a C developer.
I agree. My impression was that they just want to be the one account you use to sign in to all your apps and provide the backbone structure for those apps.
Isn't it similar to what LSA(http://en.wikipedia.org/wiki/Latent_semantic_analysis) does?
All of these terms are used interchangeably, so the following definitions probably wont be too helpful in the real world, but in my experience:

Artificial Intelligence is an umbrella academic term which encapsulates the study and design of intelligent machines. It's not well defined because AI is evolving so rapidly.

Machine Learning is a branch of AI that is concerned specifically with learning from data; the results of learning are usually used to predict future events. (Think linear regressions, random forests, etc.)

Though not specifically a part of AI, Statistics is the field that formed many of the algorithms used in ML. Stats informs ML research design (e.g., how large of a sample size do I need), generates mathematical solutions from proofs and equations, etc. With the rise of big data, it's slowly merging with ML.

Data Mining is a mix of ML, Stats and Data Engineering. It's more concerned with structuring and extracting patterns from data than necessarily learning from it. It is often a task within an ML project.
/dev/urandom is usually pseudo random, so as an initialization for SHA1PRNG random number generator it is not good enough. It seems that the suggested fix is not good enough; you need a real source of entropy - which is /dev/random.

The problem with /dev/random is that sometimes there is not enough system entropy (depending on the available hardware sources), so reading from it can block;

On smartphones they might use the radio signals as a source of entropy, get some data from the radio then MD5 the stuff; couldn't they do just that ?
Yes i work for a startup named Vidoofy, its a Youtube video promotional network and a marketing, analytics tool provider to video marketers.
Actually, A-6Bs on SAM suppression flights idled their engines and dived for the deck to avoid SAMs fired at them over Vietnam.

There have been cases of MiG-21s and Mirage F1s releasing flares and successfully avoiding an AIM-9 missile fired at them from less than 10NM. The engaging fighter usually speeds towards the target and fires a second missile at closer range and shoots it down.
Elon gets that humans need to go to the stars to ensure our survival. That's the big idea. The neat part is writing history along the way.
With lower salaries and fewer benefits though.
I have never seen an industry that so dispises it's own clients/puppets. I mean, they don't even inform you when they close your business-account. And when you try to call (like any sane person would when her company can't process payments) there is no clear message.

Also; the Obama adminsitration has already used the banks to reach their own goals (WikiLeaks and Credit Card companies anyone?). Apart from that, they have used the threat to remove countries from the SWIFT system, denying all of a nation's companies and citizens access to any payment-system...
The original Kinect did not use time-of-flight technology, but projected a structured infrared light pattern and observed the displacement of the pattern to determine depth information. The Kinect that will ship with the Xbox One will use time-of-flight sensing (probably from the ZCam assets they bought with 3DV Systems).
Good and Bad Reasons to Become an Entrepreneur
This

I don't pay for this "featured job seeker" thing, havne't gotten in the way.

It may backfire since some people may filter the paying candidates as 'ads'
There are some drug crimes which actually are terrorism. In Mexico, the cartels/Zetas/etc. are an existential threat, and that's spilling over. There are towns in the US where MS-13 is a locally existential threat, at least within immigrant communities. The drug gangs in the inner cities in the 1970s-1990s were, too. I'd be ok with some use of some military force (intelligence, or just straight up infantry and MPs) in certain counter-drug terrorism contexts.

(I say this as someone who is in favor of immediate legalization of MJ, and decriminalization of all other drugs, with extensive treatment available for addiction or sub-optimal drug use.)
http://ycombinator.com/newsfaq.html

Just ignore it.
I would think so, but out in the boonies where I live most people cannot afford to make their car into a status symbol. Here in NM, the car-as-status-symbol means something rather different than in the rest of the country. Here, an old luxury car with new paint and possibly a portrait of the Virgin Mary is pretty rich fare. A lot of cars have large decals in the back window that read like tombstones: "In Memory of Consuelo Gonzales, 1969-2007". One guy in town has a glossy black 70s-vintage Buick with bright gold hubcaps. Another guy has an all-gold Cadillac, and it really looks like gold, not gold paint.

I imagine these cars convey a lot more than just status, and I'd be surprised if they were expensive. Out in the boonies where I live, not many people can afford a rich import that the local mechanic can't work on. Even in the big metro area to the north, the fanciest you get is the odd BMW, the occasional Porsche. Until visiting Chicago I hadn't seen an Aston Martin in the flesh, for instance.
I decided to write a blog post responding to this article, partly talking about why I think this is relevant Hacker News, and also asking a lot of question - I certainly don't have a lot of answers...

http://www.opine.me/egyptian-government-mass-killings/
Save your work, give software engineers a career track
From the linked paper:

Many different types of models were proposed for estimating continuous representations of words, including the well-known Latent Semantic Analysis (LSA) and Latent Dirichlet Allocation (LDA). In this paper, we focus on distributed representations of words learned by neural networks, as it was previously shown that they perform significantly better than LSA for preserving linear regularities among words
Yes, if you already have a relationship with a carrier or aggregator we can help get you hooked up. Just get in touch.
Design By Numbers: Typography
API docs here:
https://textit.in/api/v1

We're adding a lot more APIs around flows very soon.
I feel like a lot of good technology was lost with the cancellation of the X-33/VentureStar. They were very close, and a few test failures caused the entire program to be shut down. It's really a shame.
Samsung Brazil violated labour laws
Lenovo doubles mobile device sales
You are totally entitled to your opinion, but here's what happened from my point-of-view:

1. You read/skim my post

2. You assumed I'm selling advice (or info-product)

3. You assumed I didn't know my topic

4. You assumed I would be stupid enough to tell people "gee, I don't know anything about this biz optimization thing" while selling advice on the topic via the same channel

5. You assumed I was a "get rich quick seeker" out of my depth

6. You assumed that Amy's course somehow was responsible for this

7. And now it's not Amy - it's us students, who the courses like this attract

I'm not offended though, I'm just amused. LOL. And I can see how my communication and not being native english-speaker are partially responsible for this.

The funniest thing here is that many of us "get rich quick seekers" in Amy's course have spent years building online businesses. Yeah, we definitely don't like what you are saying :D
I'm terrified of what powerful tools like Palantir can do in the wrong hands, with really any hands without a lot of oversight, but somewhat comforted by this article (and by the Palantir employees I know personally) being generally "techie-libertarian" types -- they at least are more willing to consider the downsides of universal surveillance than a lot of their "customers" are.

It would be amazing if Palantir was a 5-10x better tool for CIA, but came with non-overridable limits which actually protected individual liberty (of US citizens and non-citizens).

There are certain things Palantir can be used for which are essentially purely good -- identifying disease outbreaks, other potential environmental danger, etc. -- which they will hopefully emphasize.
Hi, i watched the video & it is a good one. But it had to be improved by creating through a story telling with some graphics and images. Why did you spend some money to create this video with physical persons. I think you need a graphic animated video to explain your service and product, that would be the best way to go viral.
Anyways i run a YouTube video promotional startup called Vidoofy ( www.vidoofy.com)
Tell HN: Firebase leaves beta on August 15 2013 (tomorrow).
Although this is drifting away from the original topic, let me tell you that wealth is relative, especially in a social context.

The bottom line in a social context isn't how much money you have, but how much value you bring to the table. Value is incredibly dependent on a wide range of factors, so you can tweak and specialize for certain situations, adding more than any amount of money could (Compare the value Bill Gates could add to a rap battle with the value Jay Z could add. Bill Gates is massively more wealthy, but in this context, Jay Z has a distinct advantage).

Let's apply it to networking. Of course, being valuable businesswise is important, but I can go to a networking event and use my conversational skills and my area knowledge to my advantage."So anybody up for this amazing insider teppan yaki 2 blocks from here? I promise it'll blow your mind." At the end of the evening I'll go home with half a dozen great contacts, which beats 200 cold business cards by lenghts.

That's exactly how I ended up with that crowd, but it wasn't actually the network I was aiming for. I was looking for contacts in the nightclub management/ promoting area, but I didn't dismiss them because they were fun at parties, they made me seem more connected, and because their parents were usually businesspeople, which would extend my network into that area. I'd be viewed as a good influence on them, which instantly put me on good terms.

I know that sounds awfully calculating, but it generally does when you break down social interactions in that manner. I hope it helps in case you want to do networking.
There's a lot more to the Tesla battery management than a bunch of laptop batteries wired together. Cooling, wear leveling, charge management, LiOn combustion containment.
If you want to know more, their is an interesting film with Dan Ackroyd about it. I just realised it's on YouTube for free http://www.youtube.com/watch?v=9PMnlnqRex4 (it was created by the gov't of Canada, and probably isn't available through other channels. I'm in Oz, and can't get it here through iTunes).

It is a very interesting look at this bit of Canadian and aviation history, and the conspiracy theory that the program was cancelled due to political pressure from the US.
I'd go so far as to say that it WAS one hell to contain. That wasn't a dumb insurgency, and I suspect it achieved a fair few of its aims.
Nothing seems to speed up progress like a good old-fashioned prize.

First team that can send and retrieve two people to each:

- $5 Billion USD for the moon
- $100 Billion USD for mars
Point #11 seems different than my understanding of most VC Series A rounds. It tends to be 20-40%, so almost always over 15%
> when you're healthier, your body metabolizes things faster & more efficiently. So stuff like alcohol or caffeine will hit you harder and faster

What you are saying does not make any sense. If it did boost your body metabolism, then your enzymes should be working faster at breaking down alcohol.
It is similar, but at least according to what Mikolov wrote as a response to reviewer comments regarding LDA/LSA/tf-idf [1], LDA does not preserve linguistic regularities such as king - man + woman ~ queen. I asked for additional clarification, but so far I haven't received a reply.

A good intuition as to why these kinds of regularities could even exist was given by Chris Quirk as a blog comment [2]. Essentially, imagine that each word is approximately represented by the contexts it appears in, if so, swapping in and out the contexts of other words could indeed preserve some linguistic regularities.

[1]: http://openreview.net/document/7b076554-87ba-4e1e-b7cc-2ac10...

[2]: http://www.blogger.com/comment.g?blogID=19803222&postID=5373...
Smalltalk runtime in the browser
irony of the month: anyone NOT following the age old advice about not implementing your own crypto would have been spared from this.
You forgot to include the costs of insurance, disposal of waste and dismanteling the nuclear plants after usage. If you include those, the numbers for nuclear are much less impressive.
Linkedin down
Bitinstant Class Action Lawsuit
...,including moderation. -- Oscar Wilde
Also lots of photovoltaic in the south (Freiburg for eg.) where there is significantly more sunlight.
The problem is that for arrays, most non-trivial datastructures have a high cost because of indirection. Memory is already the main bottleneck in many numerical operations, and adding pointers is often terrible for memory performance.

For arrays, even large, reasoning in terms of O(N) for access patterns is useless, because the constants are what matters.
Indeed. Sunday night is quite a popular night to have "a few" over here.

Never understood it myself - Monday mornings are hard enough!
Totally bad article. It encourages bad practices like checking validity on the same set as model was trained on.
You should do some cross-validation or at least split data into two parts, train model on the first part and test it on the second part.
The "side-channel" is your brain. Doh.

This implies the possibility of "something you know" may be only just as secure as "something you have."

As people integrate and evolve to include technology, the security aspects of bio-technical interfaces are going to get really interesting and damn important.
> I'd wager that the vast majority of professional software engineers work on the web

Yes, a majority of prof. software engineers who work for internet companies work on the web. But then there's also stuff like embedded, systems, databases (not the ones you hook up to some scripting language to generate html), medical, aerospace, industrial processes, etc.

The software industry is huge and only a small part of it is web related.

> I mean just look at the front page of Hacker News

It's like assuming San Francisco was a model for all other cities on this planet. It's all about your local bubble. For you maybe really it looks like everyone (including your local coffeeshop owner) could win a JS hackathon. But for me I barely know an engineer who's fluent in JavaScript. Everything is C++ here.
OpenMailBox: http://openmailbox.org

Autistici: https://autistici.org
Thanks, that (http://en.wikipedia.org/wiki/Burroughs_large_systems#B5000) seems like a very interesting processor. A few tidbits that caught my eye:

- All code automatically reentrant
- Partially data-driven tagged and descriptor-based design
- First commercial implementation of virtual memory
While it might be hard to go 100% green, it is doable to go maybe 50% green and desirable too.

It is a popular verbal feat by the fossil fuel energy industry to state: "Yes, but we can't go 100% because of x.", to chill the discussion and the momentum of renewables.
That's brilliant! I've worked in SMS business and dealing with the aggregators and their shitty connections was really annoying.

If you have such low prices for messages you can't be on roaming right? So you have to have a phone in each of the countries?

Also have you considered the legal side of the business - there is massive amount of regulation in a lot of countries (not only western, I remember we worked in SA and it was regulated too) - would you just disable accounts after abuse or are you monitoring it?
Well, keeping 1-2 BTC as a personal wallet for real-world transactions makes some sense.

As for keeping ~50 BTC - a possible scenario is that the guy/gal bought a specific, cheap Android phone as a "safe" - that is, installed only the blockchain app, and cut off the internet/cellular connection. One would expect the phone being offline and the app being from a trustable source to be secure :)
Which is amazing since it removes the indoor constraint that the structure infrared light pattern approach had.

There are several projects out there that use kinects on robots in order to scan entire rooms, creating 3d maps of them [1][2].

There's also this [3], which isn't entirely related to TOF, but i think it's cool, and it uses a kinect. Sorry for my lapse in topicality.

[1] http://www.youtube.com/watch?v=aiNX-vpDhMo#at=19
[2] http://www.cs.nuim.ie/research/vision/data/rgbd2012/
[3] http://www.youtube.com/watch?v=2CbiOikirrg&feature=player_em...
Yeah, the bag of words and K-Rank reduction stuff basically is LSA.

I've written an LSA implementation a few years ago for a BI product ( written about http://www.innoveerpunt.nl/interactief-innoveren/innoveerpun... sorry that it's Dutch :) ).

I wonder how well it works; my takeaway was that you need to tweak the internal thresholds and matrix sizes a lot to get the optimal results, which in turn is highly dependant on the datasets you use (which is also made very clear in every LSA paper you'll read).
where does it pull from?
Samsung brings dual view feature to TV - 2 programs on one TV
You can think of this as a square matrix W. The size of the matrix is the size of the vocabulary. If we look at the 100k most frequent words in our corpus, W will be a 100k x 100k matrix.

The value of W(i,j) is the distance between words i and j, and a row of the matrix is the vector representation of that word. Research around word vectors is all about computing W(i,j) in an efficient way that is also useful in natural language processing applications.

Word vectors are often used to compute similarity between words: since words are represented as vectors, we can compute the cosine angle between a given pair of words to find out how similar the two words are.
Or microphone.

"this" for clicking, "draaaaaaaag" for dragging.
> I suspect NAB got Pin because they're the only bank allowing you to deposit multiple currencies in a single account. Everyone else requires you to open separate accounts for separate currencies.

NAB also has Braintree, likely for similar reasons.
Top Lessons: Interning at Google, The White House, and Microsoft
No. We already spend too much on education. The one thing we've managed to conclusively prove in the last 30 years is you can't improve education by throwing money at it.
The Story of Japan's 'Lost Decades' was a Hoax
Do they exist?!
This seems like testifying against yourself. Aren't lie detector type systems only done voluntarily?

Related, the MRI lie detector: http://www.ncbi.nlm.nih.gov/pubmed/19092066
Google's lawyers: If you use Gmail you have no expectation of privacy
From what I know, NAB's Foreign Currency account is still single currency. You need 10 accounts if you need 10 currencies, with $40/month fee if balance is lower than $20k. The benefit is with their Merchant Account, which can offer settlement to foreign currency accounts with a single interface.

I've never seen any other major bank in Australia publishing any foreign currency offering for credit card processing.

Braintree is not a small player, so it's highly likely that they are able to get customized proposals from different banks and the choice of NAB should be a lot more than just the existence of a published product.
*cue inception music

But really, looks like this experiment could be totally derailed by closing your eyes, or by thinking of irrelevant topics.

Still pretty neat though.
Why?

This is a failure of the CSPRNG. What "not implementing your own crypto" usually means is trying to cobble together primitives like AES, RSA, and some mode of operation (and, if you're lucky, there's a MAC algorithm in there too), which would still probably have been horribly broken in some way. That's completely orthogonal to this issue.

Are you insinuating that explicitly seeding the CSPRNG with information from the OS' CSPRNG is somehow a bad thing, or that it is frowned upon, or that it constitutes "implementing your own crypto"?
I clicked "View Source" and read it. (It automatically wraps text in Chrome; in Firefox you have to click View > Wrap Long Lines).
>[You] personally know thousands of others that fit in the exact same category.

"personally know thousands". Let that sink in.
Meditation is also a practice of continuous "unwinding," or staying clear of being "wound up."

You could make a decent case for summarizing Buddhist philosophy in this way: regular life is stressful, the source of stress is being wound up, and it's possible to practice not being wound up, through specific techniques including meditation. (That's a somewhat customized translation of the so called "four noble truths.")

One of the techniques involved in Buddhist practice, incidentally, is abstaining from habitual use of alcohol and other intoxicants. People have been experimenting with these kinds of life hacks for a long time...
The drone may not have been tricked either. It may have simply crashed.
I wish hn would just go ahead and ban io9, extremetech and any other site that feels it's necessary to claim a game changing scientific breakthrough happens every single day