skysight-inc/HackerNews huggingface dataset:
PyPy3 2.4.0 released
Lack of Google Apps was a big problem 2 years ago. These days, lack of Play Services means a huge number of non-Google Android apps won't work. Play Services is Android for many developers.
Learn skills that are in demand in any org. I can do Sysadmin/Network Admin/IT Manager/Devops for an enterprise, a SMB, a startup, or even consulting part-time if you don't need a full-time person.

You don't need AWS? Cool, I can manage Hyper-V, Openstack, or VMware. You use .NET instead of Python? I can do that. You need me to be customer facing? Easy as pie.

I am not an IT professional. I've a business professional that uses IT to solve problems.

EDIT: /u/todayiamme, saw your reply you wanted to get in touch. I'd love to!
If UFOs were real and as prevalent as they've been claimed to be, someone would've gotten one on their cameraphone by now.

Unless, of course, they're the ET equivalent of 4chan trolling.
Fourier Transform became trivial to me when I noticed that it's just a basis transform, as you would do with ANY other basis. Except this basis happens to be sine and cos waves of different frequencies.

i.e. you view the entire signal in the original domain as a single point in space of dimensionality equal to number of measurements, and then you project it onto the new (fourier) basis. For example, one of the new basis vectors could be sine signal of some frequency k. You find the component of the original signal along this new basis just as you would do for any other basis vector, with a dot product. The only slight complication is that to get the phase information you have to actually dot with a cosine at that frequency as well. The confusing e^ix complex number multiply "hides" the fact that we are actually doing two simultaneous dot products (since e^ix = sinx + icosx): one with the sine and the other with the cos, to get both the frequency and phase.

this is the intuition for DFT but for FT you just have infinite-dimensional vector space, done. This is much more intuitive to me than "spinning a signal in circle", which I personally find very to be a very confusing statement.

EDIT: granted, basic linear algebra concepts (vectors, basis transform) needed.
I'm not sure what point they are trying to get across, but that page is just horrible to look at.
As a colorblind user who also wears glasses, I found this site very difficult to read. If you want your message to be accessible to all, please consider using larger text, not putting text in images, and using a text color that has significant contrast from the background.
The Extended Mind
Bayesian Testing of Conversion Rate
Does anyone know why the properties being auctioned off appear to be so randomly situated around the blighted areas? As others have commented, it seems like a developer could do a lot more with a contiguous (as much as possible) group of properties than with the same number spread across the city.
You can put a different SIM in it. The device (in this case the iPad) itself isn't locked to a carrier. The Apple SIM was only an additional convenience in that you didn't even have to put in a new SIM in it (i.e. the same SIM could be used on multiple carriers) to change carriers.

However, that's currently effectively limited to 3 carriers now (2 US and 1 UK) with AT&T effectively making it non - reprogrammable SIM if activated on AT&T).
I think I've tried most combinations to be honest ;) I change my diet depending on my goals. For example, I will start upping the carbs (probably to 40% or so) soon due to change in exercise schedule and the carb requirements for explosive exercise.

Currently, its around 40-50% protein, 25-30% fat and remaining carbs (fruit and vegetables mostly). I weight and log all my food intake (well, 95% or so, the rest I eyeball it when I go out to eat with my family, but even then I try to keep it simple, grilled steak with veggies, no sauces or oils. That way at least I have an idea on the macros/calories). I prefer to work in ranges to have a bit more freedom than a set number. For example, its 9pm after dinner and I have 82kcal remaining for the day, and since my protein and fat goals for the day were achieved, I'll be eating 12 green olives (weighted) with a bit of garlic as a snack that will get me 5kcal over my daily limit.

It maybe overkill for some, but it works for me. I used to box and had to make weight, knowing and controlling (weighting) the food worked for me, so whenever I want to change my body composition or my work and workout changes, it is my go-to tool and it works. I'm sure it will work for most other people short of some medical issues, but many people don't stick to it or fool themselves by 'forgetting' to log that cookie at work or those 2 spoons of sugar in each of the 4 cups of coffee they have per day. Now, appetite control is something different, and regarding that, I know many folks have problems with, both physical/hormonal and mental to which I don't want to say anything as I don't want to impose my views on other folks and don't know what they have/are going through. I actually try to stay away from nutrition discussions here in HN since there is so much crap flying based on the hip bloggers of the time that I gave up. (fad now for hacker-like mentality seems to be the Paleo and Keto diets being the holy grail of dieting. While both have good, and bad things about it, and I'm sure they have worked for various people, it is almost like discussing which religion is right)
IsThisYourPaperOnSingleServingSites
$83 million in unsold phones is a lot of inventory. I wonder if they'll end up sold on Woot or plowed into a landfill a la E.T.
Even if it bottoms out, there are recurring costs just holding it that you may not get back in value gains in a lifetime.
If you took what he said but replaced "as an Israeli myself" with "I'm not Israeli", it would be racist. That's what annoys me. It might be different if race/ethnicity/religion were involved in the article.
Also remember, Google has had a high altitude balloon program in R&D for a while. http://www.google.com/patents/US8634974

So I would wager this was a much lower cost than Felix, who had a lot of custom work done for the sake of marketing.
I have a great deal admiration for Munger. If you haven't read his essay, "A Lesson on Elementary, Worldly Wisdom As It Relates To Investment Management & Business," I highly recommend it. Y Combinator's old site has a copy:

https://old.ycombinator.com/munger.html
Show HN: Simple REST/JSON Information Exchange Gateway
That must be why the iPhone is such a spectacular failure.

I don't think it has anything to do with the restrictiveness, just that it was not very compelling and had 2 weird gimmicks no one really had a use for. That combined with the low visibility of Amazon as a phone manufacturer, I can really understand people held off buying.
Interesting - my cookie, collected the day this broke, has the same prefix as the author: "981596494\x00"

I'm now getting a different cookie (same physical location) that starts with: "379689122\x00"
The NYC Ebola patient has turned us all into spies
I think the interesting stuff starts on page 2:

With the help of Mathematica, one of us found
some counterexamples to our conjectures. Fortunately, another one of us was using Maple and,
when checking those supposed counterexamples,
found that they were not counterexamples at all.
After revising our algorithms from scratch, we
concluded that either the computations performed
with Mathematica or the computations performed
with Maple had to be wrong. Things started to
become clear when the colleague using Mathematica also found some “counterexamples” to the
above-mentioned result of Karlin and Szego for
the case in
(1)
and, even more dramatically, his
algorithm yielded different outputs given the same
inputs. Our conclusion was that Mathematica was
computing incorrectly.
If this is totally accurate then thanks for clearing that up. I was of the impression that part of what made persistent data structures persistent was the structural sharing.
My personal suspension of disbelief was more strained by the premise that nuclear war would somehow lead to very significant warming. Shouldn't just the opposite happen - all the dust and debris causing the infamous nuclear winter? Looks like the game creators are mixing the popular horrors from the 70s with the modern ones and just handwaving over the contradictions.
Something similar I built a while ago: http://vocowl.com
Well, LuaJIT had already supported some of 5.2, just not all of it [1]. So I guess the issue is, how long can LuaJIT hold out on being 5.1 compatible while pulling in features from 5.2+ while not fragmenting the language? My (admittedly limited) understanding is that 5.2 was already not fully backwards compatible with 5.1, so if that trend continues, I just have a hard time seeing LuaJIT stay 5.1 compatible without effectively forking the language (even if they don't call it out as such).

[1]: Here is one reference though it's not necessarily the best: http://lua-users.org/lists/lua-l/2012-01/msg00796.html
The key of course it that it is matching the colors of the words with the notation. It is a helpful tool for people who cannot read the notation.
For me, there were limited opportunities for growth since I wasn't an engineer, but I'm happy to talk more in person about it :)
They should make a movie out of this.

"Das Hedge Fund"
TrueConf for Linux: Video Conferencing for All Popular Builds
i've probably watched every youtube interview, speech of both of them, and read most of the important articles and books (superinvestors graham doddsville, snowball, shareholders letters, on and on). this is a great summary of what i've gleaned from their wisdom as well. i couldn't say it any better
I bought the Fire HD 8.9", rooted and installed Play store. You can run all the apps on play store. It was a better deal that way.
I've been wondering when the high power rocketry guys and the skydivers will get together...
I understand that log-time algorithms have a marketing problem. I think the correct way to address that is the one I already suggested: give benchmark numbers for lookup, relative to ArrayList, for a typical collection size (or maybe for a few sample sizes -- 32, 1024, and 32768, perhaps). These will clearly show both that lookup is fast on small seqs and that it slows down logarithmically.

I would be more sympathetic to your argument that O(log n) is "practically" O(1) if you would put it in context. It's certainly true that how much the difference matters depends on the application. For someone doing real-time work (HFT, for example) it could be critical. For the average web app, it matters extremely little; the programmer productivity gains offered by functional collections far outweigh the small cost in CPU cycles. I totally agree with that argument, and have made it myself many times, but I still wouldn't say that log time is "practically" constant time for all applications.
How is XMPP breaking the internet? It's an open protocol, with free and open implementations.
Just follow the project map, it's so simple.
How did they not see this one coming? Bezos is notoriously a data driven decision maker, I wonder what data prompted them to build the fire phone.
I would go for Python. It provides more flexible approach for coding and the AI community seems to be revolving more around Python.
I think you're right, but Apple does exactly that, so it's clearly possible to succeed that way. Whether it's possible for anyone but Apple to succeed that way is another question. I think it might be--say a Chinese company with Chinese customers, or a future Google-only ecosystem, or an Amazon that negotiates a huge range of discounted offerings (20% discount at Starbucks and thousands of other brick & mortar restaurants and shops as long as you buy with your Amazon phone through the Amazon retail network, etc.
Any new entrant into this field is going to have to immediately convince me it's better-designed than StackExchange.

NLP on verbal requests (isn't this already baked into Android and ios?), video responses seem like decorative sugar to me.
The name "GNU" and its abhorrent pronunciation has been such a branding failure on the part of the free software movent.

Yet, the creators continue to wonder why those outside the tech world approach these issues with a high level of apathy.

A movement filled with in-jokes and "geeky humor" will never gain the support from the general public desperately needed for real change.
That argument applies to any O(log n) algorithm. The base of the logarithm doesn't matter.
Two things:

- There are use cases for "smart" motion sensors which aren't security (did you see my elderly relative example?).

- Most common criminals won't cut the wires into your home. They're looking for an easy score unless you are a common target of professional criminals I wouldn't worry about it.

- There are degrees of security systems. A simple smart system definitely won't be in the upper echelons of what is available, but that's fine, there is market enough below that.

- Cannot argue with an insurance discount, good point.
Why we as American consumers continue to tolerate behavior like this out of our carriers is beyond me...
Then I'm still confused. Is "persistent data structure" a synonym for "purely functional data structure" in the sense of Oakasaki96?

http://www.cs.cmu.edu/~rwh/theses/okasaki.pdf
Amazingly enough, UCSB has a strong physics department. Shuji Nakamura there just won the Nobel Prize for inventing the blue LED.

UCSB does look like the Hollywood version of college. It's right on the ocean, there's an on campus surfing beach, and the students are very fit.
This is fantastic!

We're in a technological world now, and not knowing how to use that technology puts one at a severe disadvantage.

I'm very glad to see other fields start using technology and actually teaching it in the Universities.

I have a friend who is in the Political Science program at his University, and they are teaching everyone how to use the R programming language. He couldn't stop complaining until I just laid out everything he could do with it.
1 or 2 lots? The margins after commissions are going to be crap (if anything) for big indexes. I know the phrase "efficient market" gets thrown a lot but its pretty relevant here - there simply isn't much, if at all, to be made doing this.

Lets say you have 100 shares of SPY - $19.6k. You propose what - Writing Nov 22 calls? Look at the chain - $0.31 bid for 204, for instance, which is pretty high-risk already, but 205 is to $0.23, 206 down to $0.15.
You can even find an index that does this for you - http://www.cboe.com/micro/bxm/ . I'll save you the looking, but it underperforms SPY at 1,5,10 years + inception.

Options are valuable tools for certain situations, but average investors shouldn't touch them with a 10 foot pole.
The isolated phrase "spinning a signal in a circle" is confusing, but the accompanying visualization of tracking a point on a spinning speaker cone is something that can be visualized.

More generally, your explanation may make sense to you, but it makes no sense to a layperson (i.e. me). But the linked short description, along with the speaker cone visualization, does make a reasonable amount of sense.

I've also seen a similar description in the past with accompanying animated GIFs illustrating the point, instead of the prose about a spinning speaker cone. I thought the animated GIFs made it even easier to understand. Sadly, I don't remember where I saw that.
I might be naive, I just feel like the HR department would be unlikely to shoot down a candidate for being too old. A big part of their job is making sure everything is at least documented enough to justify in court if it came to that. Rejecting every old candidate seems like it would make their job a lot harder.
They're big enough to get some data by trying things.
Just to be clear, I would never suggest that the constant factor doesn't matter. I might, however, repeat the familiar quote about premature optimization :-)
You mean that by design Tor acts as MITM, and that end-to-end crypto should be used to provide integrity?

The major users of Tor need to consider even their ISPs as an adversarial agent - that they are being actively monitored and MITMed. In this sense, these users are not trading security for anonymity.

For those who trust their telecommunications carriers (in the US even in the face of CALEA) - they are certainly introducing a MITM. It's also important to note that the linked article considers the 'security bug' to be owned by software updaters and software vendors that that do not sign binaries - the vulnerabilities are not specific to Tor, but it does provide one mechanism to exploit them.

This is all a good reminder, as the Tor team themselves regularly say, that secure operational browsing and software practices are crucial to anonymity and security even with Tor installed.
This isn't 2007, though. They were competing against 3 established brands and offering a more restricted product with no differentiators.

Microsoft is having enough problems convincing people that a 3rd place app store is worth developing for, how was Amazon supposed to get in?
There are varying degrees of changing the world, and not all have to have the aspirations of something like "organize the world's information and make it universally accessible and useful." If you're creating value by helping someone do their job better, or faster, or with less waste, etc, then you're still changing the world just in a relatively smaller way. Perhaps a better way to state it would be "making a change on the world". The startups that are upending entire industries (Uber, SpaceX etc) get the most attention, but there are significantly more focused on missions that may directly affect a lot less people, but still improve their lives in a meaningful way.
this is a very large part of it
Definitely one of the lesser Nobels though, given that it was awarded for an achievement in engineering, not physics.
For me, I wouldn't say the Internet is broken. It just could be better.
No sockpuppets or astroturfing on Hacker News, please.
You can use SELECT inside of SELECT now, and MySQL is usually smart enough to plan and optimize the join for you.
Rather not give away my location. Remember, these are rentals, so I'm buying and holding, not flipping. Also, interest rates allow me to leverage the fed pretty heavily to my advantage. My profit is a combination of cashflow + equity. Most gains are unrealized for now and won't be until I decide to retire (hopefully early) or do a cash-out refi.
Surprised you went with ADT. http://thesweethome.com/reviews/best-home-security-system/
In theory like all of its predecessors such as Yahoo Answers and indirect competitors like Quora, Fountain is a great idea, in theory, but in practice we all know that it will not go very far. And that is not a reflection of Aaron Patzer's inability to act upon an idea, Mint.com obviously was a big success, however, to me at least, Fountain will fail for one reason and one reason only: people do not like to pay for things on the Internet like this.

It is a sad reality that the only thing that really makes money on the internet is e-commerce (online stores), popular subscription based services/games and advertisements. People have built up this image of the Internet being for finding answers to your questions for free. I could be wrong and who am I to say that Aaron can not make this succeed? He obviously has a lot more experience, capital and connections to try and pull something like this off.

Adding in the ability to have a chat with someone in many different ways is quite cool, but I would not go as far as calling it groundbreaking or new. The whole premise of a proper Q&A platform and accompanying application is something that this article acknowledges has been done many times before.

I think it is a bit sensationalist to say that Quora failed, in my opinion it is thriving. As a regular Quora user I can attest that it is not a Q&A website in the sense of the terms we have come to know. When my dishwasher stops working, I do not ask people on Quora nor do I seek out existing answers on how to fix it. Quora in my opinion is for sharing interesting stories about experiences. Most of my uses are reading interesting questions with interesting answers ranging from drug dealer experiences to physics and more.

Some of my favourite Quora questions/answers include:

What does it feel like to shoot someone in the line of duty? http://www.quora.com/What-does-it-feel-like-to-shoot-someone...

If the world were a cube, how would gravity be different? http://www.quora.com/If-the-world-were-a-cube-how-would-grav...

What is it like to be a drug dealer? http://www.quora.com/What-is-it-like-to-be-a-drug-dealer

I wish Aaron the best of luck with this idea and if it succeeds, I will be the first person here to admit that I was wrong about someone being able to finally crack the big problem of a decent Q&A platform where answers are credible and the consistency and quality of the platform can be maintained as it grows in size.
> That must be why the iPhone is such a spectacular failure.

The iPhone has a VERY LARGE ecosystem of software and hardware to support it. There is a lot of value there.

But the Fire Phone didn't have that. It ran a version of Android so they could have had a lot of stuff but instead they chose to prevent that. In the end it cost as much as their competitors but had no software and it's only unique features were somewhat gimmicky.
Spain's been balled up in "Franco-Iberia", at least.
That is just an awful page and there really, really is no excuse for the sheer terrible.

The idea is nice but the delivery is so bad that I think you should go back to the drawing board. If you communicate this poorly it'll never see real adoption.

No offense but you've made life difficult for:

1) Screen readers.
2) Colorblind folks.
3) Anyone with poor eyesight, really, by basically making the font a different shade of the same color on the background.

Please fix the site before you try to publicize this more. :/
I never got off the newbie hill, but I loved Core War when I was a kid. This will be fun to watch, if just for nostalgia.
I mean, was it ever not broken? The people who "broke" it were the designers, assuming we're following your definition of "does not provide strong guarantees about privacy" is broken.
More like.. The Ghost in the Machine.
Wow, impressive! And on an open platform, too: http://news.turbulenz.com/post/49430669886/turbulenz-engine-...
>He added: "In raising that massive [funding] round, any investor who wanted to even look at Uber's books to decide whether they wanted to make an investment had to sign an agreement which specifically named us, as well as Lyft, and restricting them from having any ability to even talk to us for at least a year.

I'm not very familiar with venture capitalism. This reads to me as if prospective investors wanted to gauge Uber's finances by looking at their books but were forced to sign the agreement first. Is this not the case?
I've always been of the opinion that the computers should have to play through qualifying tournaments to get to a "title" match like this.

IBM had thousands of matches to prep their player and Kasparov had none. This disparity is crazy for top level chess.

I've also never heard about this match being discussed in terms of the FIDE-PCA rift, which may have given the challenger more leverage as IBM could shop between two champions. With a unified chess world, Kasparov might have been able to put the screws to IBM for a more "fair" match.
The security and privacy issues in current internet infrastructure are of course very serious, and a meaningful solution to them will probably need to be "full stack," but this project doesn't look like the solution we need. It doesn't seem like any serious thought has been put into how all these technologies will create an actual protocol stack; its just a list of a bunch of projects GNU people like.
I was surprised to see he was breathing through a mask and seriously wondered what would have happened if he had vomited in it.