skysight-inc/HackerNews huggingface dataset:
One thing I wonder is how far do graph databases actually take you? I take the "thing" of a graph database to be to give me all links with a single access (that is all links of a node are in a single data set). On the other hand, in a classical SQL setup links would probably be modelled in a table with one row per link.

But still, even if I can get all links of a node with one access, it seems to me memory will be too scarce in most cases. Let's say I want to consider all nodes that are three steps away, and every node has 100 outgoing links. That's 100^3 nodes to consider already. Or in the second step, 100^2 nodes, so we would have to access the db 10000 times to get all nodes of the third step.

What I am getting at: it seems to me for really interesting graph computations it will usually still be necessary to create some specialized/compressed model to fit all the data into main memory.
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There's no such thing as "original" idea.
If you expect to only do things for your employees that get them to sit at there desk longer to work more, then its probably not right for you. Yeah perks are good, but good fun and camaraderie in a startup is invaluable.
> It caught me off guard, but eventually I noticed it happens to everyone.

EXACTLY. What no one ever tells you is that as an entrepreneur one of two things will be true:

1. 100% of people will ignore you

2. OR, some nontrivial fraction of commenters, journalists, bloggers (often 10-20%) will HATE you

It helps a lot to know that this happens to everyone.
Visual Search for Facebook
Find friends with Visual Search.
It's so easy!
http://www.bbc.co.uk/news/world-africa-12585949

Obama's just signed an executive order banning all 'property and transactions' related to Libya. Even if you wanted to, I doubt you'd be [legally] able to. (If you're in the USA, of course..)
Here's a NYT article: http://bits.blogs.nytimes.com/2011/01/20/facebook-co-founder...
Forget inbox zero, say hello to follow zero
Angela Byron on Drupal 7
There is no bad PR.
Assuming that the comments are even real, they show a naive and fundamental lack of understanding of how marketing is a tough skill to master on its own.

Even if you were to be handed the keys to a perfect replica of Facebook, with a whole new brand, it would be anything but trivial to gain traction with it.

Success is above all determined by the execution of the idea as well as its marketing.

Some of the commenters are no doubt annoyed by the fact that the idea was (in their eyes) easy to execute and TC did most of the marketing for them. So I think it comes down to petty jealousy for some.
Absolutely, its a really good indicator between the excellent and good candidates, usually because the person has looked at what you do and relates their own experience to what the company does
at google io 2010 they discussed "next gen" queries in depth, which should be able to do geospatial queries easily (or any query for which your search space can be filled by a space filling curve):

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

we still haven't seen any of these improvements. in fact, they took it off the roadmap without any explanation.
Graph databases are probably also nice for a lot of "non-semantic" stuff.

For example, I recently wondered about the best representation for deep hierarchical data, and graph databases appear to be a good fit.
You're right, I should have said "almost always".
Fascinating article, with just one quip I'd have:

Plutonium-238, the material in nuclear batteries is very different from Plutonium-239, a material for nuclear weapons. There is great stigma against Plutonium, but mainly because of Pu-239. If you remember some of the news around the launch of the Cassini probe, there was opposition because of the Pu-238 pellet powering the RTG.

Compared to Pu-239, Pu-238 is non-fissile and also produces a lot of heat (which is the point, really). Pu-238 poses almost no proliferation risk. Even the radioactivity is in the form of alpha radiation, which needs very little shielding (hardly even penetrating the skin). The only problem with Pu-238 right now is that it's very expensive to produce and also very scarce. If Pu-238 were abundant, it could find many applications and pose very little security risk; building a dirty bomb out of it won't really work (as a matter a fact, neither making one out of Pu-239).

In general, our civilization has an irrational fear of nuclear energy. Even more egregious since there is a variant of nuclear technology that's almost completely proliferation-free, namely the thorium cycle.
Yeah, that's a bit over the top, but in my own experience a weekly brief with my SO is the only way I've been able to keep a happy relationship while building businesses. I never really thought about it before I started doing it, but treating my gf/now fiancee as a investor (which she is in a sense) got us through those uncertain times.
Are you saying that war increases technological growth? That's crappy pop-history that's largely been discredited. Competition invites advancement, blowing up your competitors does nothing.
That is certainly a big usability oversight (especially with large PDFs), I remember Chrome used to do that with images as well.

However, if those PDFs are requested via HTTP, unless the bank gives appropriate caching headers I think Chrome is technically correct in re-requesting them: they might have changed in the meantime. (I assume it does the same with webpages when you save them.)

The fact that the bank gives you a URL you can only HTTP GET once does sound like very bad implementation on their behalf. Perhaps it's a cookie issue, or even a bug in Chrome itself?
And yet this story is #1 on HN right now. Ugh.
A bit off-topic, but I don't really get Groupon. I looked at it for my region about 5 times and in each case the offer seemed to be way overpriced even with the discount and it was something that I wouldn't want even for free, and possibly not even if I got paid some small amount (for the time wasted).
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> the shift from 2.x to "current" looks like amateur hour

"Amateur hour" would be to expect the shift to occur overnight, with magic powers conferred by unicorns and butterflies. If you look at the developers posts (instead of random uninformed excitable blogs) you'll see that it was realistically expected to take a few years.

See, for instance, core developer J. Noller's comment here: http://news.ycombinator.com/item?id=2130854
Accused.
Which blogging engine do you use and how much do you pay? I'm looking to migrate my blog to GAE too. Also, how's the latency?
Analysis of Googles Farmer Update
The baked-in vs. bolt-on social issue has been explored by Jason Cohen, and I agree with him that baked-in virality is more effective than bolt-on virality. However, consider also that Dropbox's referral program is a bolt-on social feature.
Debugging a program is slightly different from trying to understand the nature of the world, no? I suppose that's the other major criteria I tend to use when thinking about scientists.
There are some good theories on this in social science; http://en.wikipedia.org/wiki/Technological_determinism and the book "The co-construction of users and technology" http://www.amazon.com/How-Users-Matter-Co-Construction-Techn...
Does anyone have any inside info on how much longer before we get to RC?
So what you're saying that intense competition between national armies is not the kind of competition that humans are willing to stake almost anything and commit endless resources on?

War itself may not increase technological growth. But preparations for war certainly do. And please show me another competition that has yielded lets say 50% of technological advances that various arms races have?

Sadly when human develops new kind of tech and is looking for money to get it widespread - the first and deciding question is: "Can it be used as a weapon?"

Think of the nuclear bunker gap!
Ask HN: I'm renovating a house, what clever stuff should I build in?
- I'd like a way of pumping music round the house into separate rooms (maybe controlled from an iPhone/iPad). It doesn't need to be wireless (Sonos) since I'm rewiring anyway.

- Is it still worth cabling ethernet in?

- Any ideas for green tech that might actually work and pay off? I'm probably going to put in a wood-burning stove.

I'm doing almost everything myself, and money is definitely a consideration.
India v England Live Match Streaming Cricket Worldcup 2011 : Live Cricket
Overstat: The Easiest Way to Test Your Website?
That you expound your claim with adornment and superfluous grammar obfuscates your intent to purport and diseminate the acceptation of your supposition.

...

In other words, no one knows what you are talking about.
Why does it have to be someone of the opposite gender?
It's funny that the haters usually say some combination of "It's not going to work" and "Someone is already doing it".

As Scott Adams put it: "Can the people saying it won't work please talk to the people who say it's already being done? Work it out and get back to me."
only if you abuse the abstraction of language to impose restrictions on reality that don't exist. people who would have been declared dead 50 years ago are now resuscitated routinely.
i also have the dead-tree version and am currently on page 100. the book is great, and is perfect for people who already know other programming languages. one think i don't like, though, is that some difficult concepts ad methods ( e.g. call/cc) are not explained as good as other, simpler features. i'm trying to learn scheme because of features like those, and would rather read a few ages more than less.
Launch Changed Everything (at)betacandy
"4) The GAE design patterns in python are ugly. I find our current Sinatra-based implementation cleaner and easier to understand. Python + django is verbose, its templating system is obtuse, and its testing framework is, well, I don't know because I've never seen it. This point is a religious one, so I'll leave it be"

Should Python programmers write the unofficial guide to migrating off of heroku?
I love Marcus du Sautoy's programmes - he also did some BBC Horizons ones that were particularly interesting - The Secret You was fun and Alan & Marcus Go Forth and Multiply is pretty entertaining and insightful as well.
Chile is already moving toward building the first thorium nuclear reactors: http://diario.elmercurio.cl/detalle/index.asp?id={183364cc-d...
"Pioneers get the arrows; settlers get the land."
A 17th century attempt:
http://en.wikipedia.org/wiki/Bartolomeu_de_Gusm%C3%A3o
I'd definitely put in ethernet. But maybe there's some way you can wire everything through 1" PVC pipes, so it's relatively easy to replace it.

For Wireless music you can also using Apple's Airport Express?

I don't know how expensive solar panels are where you live, but here they are definitely worth it, especially as they get subsidized by the government. Another good green thing is a big tank which uses all your overheat to keep water warm, and then uses it. Don't know what it's called, but it saves quite a bit on the heating bill.
I am building everything on AppEngine atm. Initially it was just to prototype but I am thinking of launching a preview release of one app live

Can you talk about how big some of the larger customer apps are and how much traffic/uers they serve?

It would be easier for ppl in a position like mine to make decisions about AppEngine if there were big examples/case studies to point to in the same way Amazon, Heroku, Rackspace etc. do
That might be because you don't do those activities and perhaps reticent to try new things. Most people shy away from anything aside from work, TV or Movie watching, going out to a select small group (or all corporate) restaurants, and do activities that, even if they may require an upfront cash outlay (biking, hiking, kayaking), are essentially free to do.

Spa treatments and Tae-Bo classes aren't really marketed towards a majority 20-40 year old men in the fuddy-duddy computer and technology field.
These are the 2 load testing tools I used so far.

Grinder - able to record the test and customize, codes are in python.

Selenium - record in firefox, able to run the tests onto various web browsers.
With nuclear tech, humans have to be the ones pushing the buttons, making pure accidents quite unlikely. If moore's law holds and we make a strong AI, it might theoretically be possible for it to "go FOOM" -- use most of it's thinking power to make itself exponentially smarter, hitting the ultimate physical limits of computing in a relatively short time. If that happens, and the ultimate physical limits of computing are sufficiently far away, the entire human race no longer has any say on it's future -- whatever happens from then on is decided by a singleton entity.

A good overview of the arguments from both sides can be found from the Hanson - Yudkowsky debate on the subject: http://wiki.lesswrong.com/wiki/The_Hanson-Yudkowsky_AI-Foom_...

Disclaimer: I have not studied the issue deeply enough to be on either side.
Alan Perlis once said "LISP programmers know the value of everything but the cost of nothing". It applies very nicely to other functional languages (much more than to Lisp)

edit: BTW, there is a whole lot to discuss over this subject: http://news.ycombinator.com/item?id=2265349
Ask HN: Bitcoin mining: anyone doing it?
From my brief research, the economics of Bitcoin mining with a Radeon HD 5970 seem a little too good to be true, especially if I buy a supercomputer for a friend in a college dorm with free electricity, or something.

Can anyone tell me how much bitcoin they are really generating per month with various setups, how much you are paying in electricity, as well as broad future on the future value of bitcoin?
Is there any headway on MacRuby on iOS since September? http://iflipbits.com/post/1101983568/macruby-soon-on-ios
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Can you tell us a bit more about what products wrpme is similar to and why it is better, and how it works?
- Plain old electric outlets in almost every corner, more than you think you'd need :)

- I'm putting in 2 wood stoves too.

- Yes on the ethernet, wifi only takes you that far.
Even nuclear energy is arguably a net win for humanity despite its destructive power (at least in an utilitarian way). In fact, it is debatable whether the use of the atomic bomb saved more lives than it took away. [1]

[1] http://en.wikipedia.org/wiki/Debate_over_the_atomic_bombings...
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I agree with you, DI is just a fancy name for a must-have feature :)
Visualize the future (ie. dream), but don't worry about the short term too much. It tends to work for me. (ie. the big stuff that I imagined 10 years ago has come true, but all the little steps in between were quite unpredictable).

The hardest thing seems to be to dream big/bold enough.
Uh, why would I be saying "yay, TRIM!" if I thought OS X already had TRIM?

Here, "blocks" is ambiguous. On a rotating HD, OS X does use the same physical blocks. On an SSD, OS X tries mightily to addresses the same "blocks" but the SSD might move this mapping to different physical blocks.

By doing this, OS X minimizes, as much as possible, the dirtying of "blocks" it doesn't have to, which means it puts the least burden possible on the SSD as it tries to do things like wear leveling.

3rd try. Please respond to what I'm actually saying.
IPhone 4 films final Discovery launch from 30,000 feet up.
Epigrams on Programmingm by Alan J. Perlis
You can set it to write all 0's once. You can't set it to write all 1's just once. There's another utility on OS X that will write 1's, 0's, then 1's. But using 3 writes means a considerable inflation in the number of dirtied physical blocks in the SSD.
tankless water heater?
Related: the "fall down 7 times, get up 8" meme does assume you're starting from a knocked-down situation.
No ill will vs Dan, but this is not like Steve Jobs taking an academic project from Xerox and integrating it into his system. This is like Steve Jobs joining Xerox and presenting the same system to the Xerox manager under a different title.

There's nothing different btwn this and Zynga's cloneVille tactics which all other game companies universally hate.
A semi-colon for a poem, really? Could I have not meant to meant to emphasize the first part of that sentence with a break while continuing the train of thought? By the way, it's 'disseminate.'
Crackdown at univeristy run by Mafia for 25 years (yes yes, the article is old)
We saw this article around an year ago and it inspired us to build Rootein http://rootein.com/ It's a web app, a Facebook app, has a mobile optimized version, features reminders and Twitter alerts as well. </ShamelessPlug>
WDE is simpler. Even if you wrote the perfect operating system or bootloader that never made a mistake, you'd still fail at the goal. User A could install a keylogger or some other kind of hardware manipulation and use that to steal user B's passphrase or spy on B.

> You really do want per-user data encryption.

What kind of situation where users don't have physical access to the machine is user-segregated on-disk data encryption necessary?
These:

http://store.fastmac.com/product_info.php?products_id=458
Success is above all determined by the execution of the idea as well as its marketing.

And even with brilliant execution and a fantastic marketing strategy, most things are still doomed to fail. Luck still plays a brutal and major part - the internet is chock full of successful startups/sites/projects that lingered in obscurity for many months or years without catching on, and then suddenly blew up and started to go viral without any particularly clever action on the part of the founders.

The important thing is to resist the urge to explain success and failure as if they are deterministic when they're really driven by essentially random factors (to be precise: they're not random, but they're so unpredictable and difficult to control that to us they might as well be). The "execution is everything" mantra is true for most types of products, and poor execution can explain failure, but IMO it's far overrated for things that rely on virality. Even if you do absolutely everything right, there's always a significant chance that an inferior me-too ripoff is going to be the one that gets all "your" users.

Which is why it's so much smarter to build things like Breakup/Crush Notifier as weekend projects rather than startups.
If they are upset about him being covered on Techcrunch, then what will they say when they find out the story has been on radio (Z100) and TV (CBS2) in New York?
Whatever sequence of events got this guy so much publicity, all you can do is wish him well, and keep doing what you are doing.
I don't think the process is repeatable.
This is somewhat disappointing. Python's lack of full-fledged coroutines is most of what keeps me using Lua.
Any support for UK banks? Specifically, LLoydsTSB, whose online interface is truly horrible... (and broken to boot)
Thankfully, their boxes do.
Ethernet in the walls is a definite yes of course.

A backup electricity generator would be cool if power outages aren't uncommon in your area. Something like a central UPS.

Good insulation is key. Double glazed windows, etc.

A solar water heater is a good idea if you get a good amount of sunshine.

Grey-water recycling is a good idea. You can also reclaim heat from it.

http://en.wikipedia.org/wiki/Hot_water_heat_recycling

A composting setup would be handy if you have a backyard or garden.

Choose robustness and longevity over style and minor cost savings for the various components/materials that will be used.
Solar thermal and solar hot water preheat is usually a big win. It takes a lot of energy to heat water. Heat in the form of natural gas is still dirt cheap, but you'd be saving a lot of carbon footprint.

Thermomax tubes can collect solar energy to heat water, even when it's freezing outside. You can also use their output as part of a radiant heating system.

http://www.thermomax.com/

Pair solar water preheat with tankless, and you have the best of both worlds -- use of free solar energy with the exact water temperature you want.

These folks used the Thermomax tubes in Arizona -- and had too much energy collected: http://www.solarhaven.org/Hydronic.htm

This guy has a bunch of tricks: http://mtbest.net/

You also might price out getting photovoltaic, and writing your own controller so that a small auxiliary air conditioner (separate from main system) gets turned on, but only when your panels are producing enough juice to run it. This means you are getting all the benefit of "free" cooling, without paying for a battery system and without paying for enough solar panels to run the AC for a whole house, and getting this boost exactly when you need it. (When the sun is beating down on your house.)

You can also look into air heat exchangers. This lets you preheat your ventilation input air with heat from your ventilation output. This only works well for super-sealed super-insulated houses. (The Germans even have a standard for super-green houses that includes such devices.)

http://www.google.com/search?sourceid=chrome&ie=UTF-8...

In Houston, the air quality varies with the tides. If you are in a similar situation, I'd look into a custom controller that ventilates the house when the air quality is good, but seals it when it's bad.
Underfloor heating, much nicer than radiators, cheaper to run and more wall space :)

+1 for ethernet.
If you are burying cables in the wall you may as well spend the extra and go for Cat. 6a UTP as it's spec'd to carry 10 Gbit Ethernet. Watch out for the minimum bend radius though its often around 30 mm with Cat 6a (4x cable's outer diameter).

More and more stuff can be carried down UTP like video (HDMI over Ethernet) and USB devices, it is also ideal for hooking up phones around the place too. You can never have too much UTP in your walls when considering possible future requirements IMO.

Oh and don't forget to run some up to your roof area to give you the option of participating in your local wireless mesh project!