skysight-inc/HackerNews huggingface dataset:
People keep saying that, but they leave out the fact that the worst school districts--but urban ones--also have the highest per student spending.
The cheapest and safest "nootropic" there is is exercise.

Students dramastically improved their grades in several schools once they were made into exercising with a heart rate monitor (higher heart rate - higher grade) every day:

http://www.amazon.com/Spark-Revolutionary-Science-Exercise-B...
Nope. If I have to put my energy and resources into feeding and caring for myself and my family, then my "IQ" - my ability and experience in engaging with abstract data - suffers.

Yes, there will still be an achievement gap - that the achievement gap currently reflects socioeconomic factors is unfair.
Make USB Flash Write Fast Again
I've had good results with qmake, too, but I don't know how well it works for large projects. I don't think any of the codebases I've used it on was > 100,000 LoC.
Google Releases Dagger 2: Even Better Java Dependency Injection
https://en.wikipedia.org/wiki/Confused_deputy_problem
Sure, but you need larger platform than just a browser to do that.

Do you? JSLinux (by Fabrice Bellard) disagrees :) http://bellard.org/jslinux/
The password is in a captcha. Better font wouldn't have helped.
The Power of Drudge (Infographic)
There are plenty of poor in Asian communities that do well in school. Presumably because their parents instill the value of education and discipline.
It is a discussion initiative for the next era of JavaScript development using the latest technologies available. As JavaScript is everywhere now, there are still differences in environments and different methodologies used that make writing code that should be working everywhere, really hard. Just take a look at how many manifest.jsons are in every package and you'll know what I mean. And it doesn't stop there.

I believe we should agree on a minimum level of how things should work, otherwise this is only going to get worse over time. The issues in the repo are used for the discussion of various topics, I started one[0], I'd love to hear everyone's thoughts on this.

[0]: https://github.com/isojs/isojs/issues/1
Being Framed Need Genetic Engineering Help
It's so refreshing to read something like that after we've been hit over the head with "pure-FP is the only right way to program" for some time.

The way I see it, I think there are two approaches to solving problems. The first tries to see what tools we have available, tries to figure out what we can build, and then hopes the result is useful. The second looks at what we actually need, and sees if we can use anything at our disposal to get us closer to our goal. In many respects, PFP is the result of the first approach. We know how to verify PFP, right? Well, at least within the confines of first-order logic. So let's hope that's useful enough. Not that this kind of research isn't important, but I see it as searching under the (academic) lamppost, rather than research directed at providing the industry with what it actually needs.
WWOOF – the good, the bad, and stories from the farm
Show HN: Sketch plugin to quickly share work in progress with your team
Could somebody explain to me what those arrows next to the heatmap are supposed to represent?

Why does "left" link to "avoids" link to "by" etc.?
Yes. It is a phone number based identification and hence it works for all the contacts in your contact book whoever has installed this app.
There's a big difference between variations in ability within a group which probably have a large genetic component and differences between different populations, say a poor area and a rich area or different races which appear predominantly non genetic and probably to a large extent cultural.
When I was working as a guest in Passion Capital's co-working space in London, I always loved how clean and transparent their approach was with everything they did.
Clear terms, investment options and a lot of their docs is "open source" so people know what to expect when they come around.
..and they're super friendly!

Unfortunately that was the only VC/Angel exposure I have gotten so I don't have much to compare it with, but I like to believe many others will be following that trend.
Are recruiters creating “appealing” faux profiles?
...restocking disks wiped by extortion-ware from NSA archives, replenishing bank accounts
Free Ethical Hacking and Linux Course Online
Ext4 encryption patches for Android
Fair enough. They should get a better font :)
we use meldium at mashape, you have all that stuff to manage access
Is that so because we vote according to who produces best theater?
Cassini's laws wikipedia article has no italian version
Exercise May Be the Most Effective Weapon Against Aging
In some countries it is illegal to provide false information to the court, especially so if you're a government agent. How is this "parallel but fake" evidence even legal?
Why don't they eat them?

The USA has a tradition of being a land of plenty and so people eat what they have always eaten before. For almost all of America that means chicken or beef, invariably. And turkey during that time of the year.

They have no tradition of organ meat, meaning liver, tripe, hoofs, etc.

The conservatism in tastes mean a lot of work cut out for anyone trying to sell new food in what is still a highly industrialized landscape and high barriers-to-entry sales channels.

E.g. if you're poor you eat deer until you grow up traumatized by it:

https://news.ycombinator.com/item?id=9351269
I'm not a CentOS admin, but I know a lot of CentOS admins. The concept of Linux distro problems is kind of foreign to me: I'm a Debian guy, the most problems we've had in the past 5 years has been pretty much just systemd (which I file away as "systemd sucks" isuses, not Debian issues).

Basically, everything they've said boils down to package deps are broken and theres no easy way to fix it, and random segfaults and kernel panics (which I have no idea why any distro would ever have this issue).
MySQL null pointer deref in OOM situation
LinkedIn buys Lynda.com for $1.5B
Mostly of off-topic, but I have to ask: what's the state of Go compilers for ARM nowadays? Are they generating optimized code on par with x86 ones?
Ugh. The whole Starbucks could know. This sort of pedanticism adds nothing to the conversation.
But are the anterless hunters doing it because they want to? Or because they are forced to by law?

Meaning, all hunters are actually trophy hunters, just that for every trophy they bag, they must haul out -- at their own expense -- non-trophies.
What's the closest thing to a simple, reliable and complete backup system for Windows?
Why Apple Doesn’t Want You to Line Up for Its Watch
You would be shocked if the law enforcement would operate within the limits of the law?
Yeah, it's much more concrete about his consciousness ideas and definitely got me thinking about a lot of things.
The Easiest Way to Make an Industrial-Style Standing Desk
Facebook Messenger Has Finally Broken Free
You guessed wrong. From your own link:

>>A total order (or "totally ordered set," or "linearly ordered set") is a set plus a relation on the set<<

Please note that "set" (unqualified) means the general concept of a set. You can extend that general concept, but then what you get is a new thing (in this case a "totally ordered set").
Techniques other sites use:

* CAPTCHA

* Require single-sign on via Facebook or Google+

* SMS token

* IP throttle

No, none of these are remotely watertight and no, not every developer is inclined to connect to their VPS via Facebook (or even has a FB account). Just saying, these are ways other sites try to add a bit of friction to what could otherwise be a runaway script spinning up thousands of servers. And without requiring a credit card.
Web Design Trends in 2015
Yes I had my fair share of issues with NFS too.

It works, more than usually but the problem starts whenever it feels like not working. And you can never be sure whenever the tantrum will come.

With linux while using the nfs-kernel-server most of the time you need to restart if a problem occurs. And I don't like restarts.

A few years ago, slabtop helped me to troubleshoot some memory issues, turned out nfs-kernel-server was leaking. I had to upgrade the kernel.

The shame is, there is nothing like nfs to replace nfs. Easy to deploy, easy for clients, works everywhere.
Yep. I don't think he has been writing essays as these before his infamous blog post[1]. He has, however, been criticising Apple for a while (forever?) on podcasts. On a recent episode of ATP.fm, he even mentioned that the blog post did not come out of nowhere, but was simply a write-up of things that have been discussed on the podcast for a long time.

[1] http://www.marco.org/2015/01/04/apple-lost-functional-high-g...
Do You Have Children? Child Trafficking Is Real
In danger of being accused of flogging deceased equines I can but point at the T42p ThinkPad which I'm typing this message on for an example of a device which fits that premise: solid hardware and a generally well though-out design. It is 11 years old, but sports a screen which comes remarkably close to the more recent Apple offerings. It also runs the latest software flawlessly, as long as that latest software is a recent Linux distribution. It has a keyboard which Apple-adepts can only dream about. Ports aplenty, two batteries or drives or whatnots, no problem, ~8 hours on a single battery charge when using the oddly shaped 'extended' battery.

An additional bonus is that you can get these things for free if you know where to look.

Of course, being 11 years old it also has its drawbacks. It won't fit more than 2GB of RAM. It is based around a single-core Pentium M which generally performs fine but shows its age mostly when meeting Javascript-hobbled web-related things.

BUT... and this is one of the main reasons why I use older hardware... if you develop software on this machine, and it works fine on that machine, it'll run circles around the stuff your neighbour made on his latest FlitzBang Fruitmachine. It'll but cause a blip on the CPU meter where his (or her, your choice) result maxes it out. It'll use memory like it was rationed, not like it was on sale.

Of course you can not develop software for the dark side on this older hardware. A small loss, in my opinion.
Big data analytics in sports industry
I recognise those Internode IPs at a glance. I used to work in the ADL6 data centre.

I'm told that traceroute isn't a reliable way to determine end point latency. I can ping 212.47.250.196 and get a round-trip time of ~365ms. That the intermediate hops each take 170 - 333ms to response in the trouceroute is meaningless. Or so I thought? Maybe I'm not sure what you're getting at?

(Edit: I mean iiNet. I mean TPG.)
Didn't know about fio, thanks!
IMHO to really change your whole life perspective, you must experience a traumatic event, not reading a book.

Anyway I would say that a book can trigger a change of perspective on a particular aspect of your life:

'4-hour workweek' - Tim Ferriss (on lifestyle)

'Get Things Done' - David Allen (on organization and productivity)

'The Way of the Superior Man' - David Deida (on relationships)

'The prince' - Machiavelli' (on business and strategy)

'The little prince' - Antoine de Saint-Exupéry (on meaning of life)

'The Feynman Lectures on Physics' - Richard Feynman' (to remember you to be humble)

A lot of other books had broaden my perspective of life even if they weren't enough to trigger a change. That list would be immense.
Messenger for Mac
There are companies out there that do raspberry pi colocation.

I guess it's just a novelty. Might as well go virtual.
There's nothing wrong with JS, the language, IMO. Quite the opposite, while JS has matured, the tools haven't. Backwards compatibility causes more friction and issues than those it solves. I'm suggesting we design solutions that aim for the future, not the past.
Why Europol director hates encryption
You can certainly argue that Cryptolocker is immoral, but I don't see how you could say it isn't clever. It is entirely possible to do bad things in intelligent ways.

Now, your parent is arguing that CL is actually a net good, even if it's doubtful that its author's motivations are altruistic. While I by no means endorse CL, I can certainly understand the argument. Most people will experience a hard drive failure at some point in their lives, surely. Could this malware ultimately save more data loss than it causes? Maybe. Although I doubt it. And even in cases where people have backups it will waste time. Regardless, I absolutely agree with you that it's immoral. But still clever.
Acronis TrueImage. But, it's not totally reliable. We've recently seen it have trouble removing old backups from attached drives, so the drive fills up and then TrueImage stops running with little or no notice. It does this significantly less often than EaseUs ToDo Backup though.

You can trade completeness for reliability by going with Backblaze or Carbonite or CrashPlan or SpiderOak for online backups. All of those offer a really good overall backup system, you just don't get a bare-metal restore and if you store files in an unusual location on your drive or use unknown file types, the backup service might not grab them.
Repeat after me: RAID is not backup.
Recently read:

* “Disciplined Minds” by Jeff Schmidt. A mind-opening book that shows how both academia and business select for conformity.

* “Go It Alone: The Streetwise Secrets of Self Employment” by Geoff Burch. Great read, witty and savvy author.

* “The E-Myth Revisited” by Michael E. Gerber.

* “Excellent Sheep: The Miseducation of the American Elite and the Way to a Meaningful Life” by William Deresiewicz.
Startup Spotlight: RapidSOS – Bringing 911 to the 21st Century
> Same as now.

Along similar lines, I think it's strange that I now see warnings in Chrome for SHA-1 certificates but no warnings at all for http.
Rocket Internet (DE) Successfully cloning business models before they go global
Thanks for comment. SSL currently available (https://galago.me), page saving process goes strictly over HTTPS. I will add HTTP -> HTTPS redirect very soon (now HTTP is necessary for backward compatibility with previous version :)).
In some cases "deal with the consequences" can be very costly. Imagine some record the police need for a court case is part of that data. You've just deleted it. A drug dealer walks free. You've just let a drug dealer go free all for $500. Good luck at your performance review.
Executive order calls for foreign hackers assets to be seized
I'm not sure how good is the test as it depends on the IO levels of the host where the VM instance is running.

This is a 1GB Debian Wheezy instance with regular HDD in Memset [1]:

dd bs=1M count=1024 if=/dev/zero of=test conv=fdatasync
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 17.7142 s, 60.6 MB/s

I checked the host and its load is average. DO's 33.6 MB/s sounds poor.

[1] disclaimer: Memset hosting is my employer, I built some of this; but this is an honest test (personal VM running several services).

EDIT: formatting

EDIT 2: same test on a VM with SSD disk:

dd bs=1M count=1024 if=/dev/zero of=test conv=fdatasync
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 3.48953 s, 308 MB/s

Again, the host has average load.
Show HN: DaVinci Apps – Сreate customized screenshots for your app
Watch Movies Online: Watch Home (2015) Hollywood Full Movie Online
tldr;

Cloning companies from USA ( to competitive) or China (to complex) before they expand. They invest heavily in marketing

Some success stories:

CityDeal got taken over by Groupon for 100 million €

Zalando, Zappos clone in the EU (very popular)

Currently has 60 companies in their portfolio.
Unfortunately no, 1) you can't trim the whitespace if you're matching cities, 2) matching the cities lowercase opens up too many false positives. At the same time, matching every city with its uppercase equivalent doubles the time requested to build the db but only adds a tiny handful of posts. That's why (for now) I settled with a tradeoff where I catch the uppercase equivalent for the biggest cities only.
Small systems are good for realtime applications. Then the resources for an application have to be ready all the time.

In terms of space/power/reliability/scalability large systems win. Sure a single raspberry doesn't draw much power. But it doesn't provide much computing power either. Throw in a few hundred of those systems and you feel the heat. Still the computing power is comparable to a single rack server. You want to use a RAID6 on the raspberry, sure, can be done but throw in 4 times the number storage devices. Compare that to the rack server with 16 SSDs configured as RAID6 where the data is shared by hundreds of virtual machines. If you compare the "energy per bit" or "energy per operation" the high-powered server CPUs win versus most anything out there.

So I'd say:

* If you can justify a real server, do use one instead of dozens of "simple machines".

* If you can use the cloud do it instead of providing your own hardware.

* Exceptions may apply where security or reliability is concerned. (You wouldn't run your heart monitor in the cloud when a small dedicated system does the job.)
FWIW: We recently talked about their servers, hardware and such: https://news.ycombinator.com/item?id=9309459
I think we'll have to agree to disagree. I follow the "respect your enemy" school of thought, and I dislike the kind of us-vs-them hyperbole that passes for political debate these days.

It should be clear from my comments that I'm opposed to CryptoLocker. You'd have to assume the worst of me to imagine that I'm encouraging it at all. But it's factually correct to say that CryptoLocker is well-written and well-executed and is making good money, and that's exactly the argument I use to convince people that they need to have backups.
Lunar Wave Debunked – Crrow777s Famous Lunar Wave Debunked
update to my original post

I am coming from a genomics background, so when I read about sliding window on time series data, I think about sliding window approach on regions of genome sequences.

The ultimate point of doing this clustering is to find repetitive sub-sequences in the series. This is also something we do commonly in the genomics field (repeatmasker/repeatmodeler software for example).

Something we can look at in genomes is a "k-mer coverage". A k-mer is just a k-lengthed sub-sequence (A,T,G,C), analogous to a k-length sub-sequence of a time series.

By scanning the genome, we can tally up how many times a k-mer appears in the genome. With this tally, we can determine a k-mer coverage for a region on the genome. This gives us an idea how many times we see this same region on the rest of the genome.

Maybe this approach can be adapted somehow? The only problem is that in genomics, we have four discrete classes (A,G,T,C), making finding exact matching relatively easy. In time-series, we have continuous data, making finding matches a lot tougher to do and define.
How wise are crowds?
JSON Table Schema
How so? You can still click the Get My Server button when the error message shows up at the top.
Wouldn't that result in a race to the bottom with regards to teaching?
whilst this is good advice for shell scripting, are you sure it applies as worded to the snippet you're replying to, given how Make uses $() itself for variable referencing?[1]

$$() might work, but untested.

[1] https://www.gnu.org/software/make/manual/html_node/Reference...
It's quite possible to check the right thought process afterwards, without asking the candidate to elucidate constantly. They might now want to be steered in the right direction, but get the depth they need to explore all directions.

The interviewer might find it awkward to wait, but that's not the candidates problem.
> If you want solid support for old products, stick with Microsoft, and accept that their products can be clunkier because of deliberate choices to maintain backwards-compatibility.

It's not only about support for "old" products, it's also about having a roadmap to begin with. It used to be common wisdom that Apple releases major updates for the current version of OS X, and security fixes for the last two versions. Well, that common wisdom is outdated now.

Also, backwards compatibility and security fixes are not really the same, and I'd say that the correlation between backwards compatibility and software quality is completely overrated. I know I'd rather trust my life to Windows 7 (the epitome of conservative OS design) than to OS X 10.10 or iOS 8 (speaking as an iOS developer).

In raw numbers, 45% of OS X users are now vulnerable (and probably don't even know about it), and Apple doesn't care. That's an insane number. And I thought not patching the ~10% iPhone 4 in the wild was dangerous!
"The 4-Hour Workweek", no doubt
>especially those jobs which require academic excellence //

Let's be clear, most jobs don't require "academic excellence" they require abilities pertinent to the job. Primarily a first degree demonstrates intellectual capacity, motivation, and focus. Some positions require a particular academic attainment but it's a first-pass filter for demonstrating one has the capability to acquire and apply domain knowledge.

For example chemical engineers can have a first class honours degree but no knowledge of the financial world, their degree demonstrates they have the analytic abilities and mental capacities that make them valuable in the financial world.

>The reason why it's so difficult to get a lot of kids to pay attention at school is because they're well aware that they won't need trigonometry or literary analysis in the job that they're going to end up doing. //

I don't believe it's that at all. I don't believe that most children have an idea what they will do for work until late in to their adolescence - beyond when they'll have first come across trig and way beyond when they start literary analysis (which basically starts when you start reading books for yourself). How many athletes have to do a press-up [push-ups] in their career? Yet kids don't say "I want to be a football player I'm not doing press-ups".

IMO those same kids will be more than happy learning to make stuff out of wood, or learning about drawing, or learning to grow plants, or learning to make clothing despite not knowing if those skills will feature in their careers later. We treat all children as if they're academically inclined and I thing this is entirely wrong - yes basic literacy and numeracy are important. Yes the more academic subjects should be open to all those who wish to follow them. But also, those who don't want to sit and do book-work all day should have educational options too.

OT: Britain is always going to be a classed society with a monarchy.
Thanks for the upvotes.
You and I (and, hopefully, most of HN) are well aware.

However, this was the very first business I had the pleasure of working with that had even attempted something resembling a comprehensive backup system, and the system they got was wrong.
Show HN: POW-ify (comic scream bubble-ify) your website with a single line of js
How Small Businesses Can Improve Business Communication
I'm very impressed that it lives up to the promise of getting it "with a click."
A combination of Crashplan, configured to backup all file types in any directory where you have irreplaceable files (generally your user folder should suffice), and a full disk imaging program. I use Macrium Reflect, as it's free and for me has been more reliable than Acronis. Run Crashplan continuously and image weekly or so. Even monthly would probably be fine, since Crashplan's incremental backups save you from any data loss. More frequent is just more convenient for restoration.