skysight-inc/HackerNews huggingface dataset:
>The reason taxi drivers have to pay for the right to work is that they need access to a taxi medallion to do their job. A medallion is a permit issued by the government that is required to drive a cab in most cities in America. If you don’t use the medallion yourself, you can rent it out to other drivers on your own or, more commonly, through a taxi company. Taxi companies that rent out access to the medallions have immense economic power over the drivers. If you’re not willing to basically become an indentured servant to get medallion access, well, you’re out of luck.

I don't see how the medallion itself (a permit issued by the government) is the problem here. The problem is that the taxi drivers are not allowed to get it directly for themselves, but have to rent it. And another problem is that this "indentured servant" renting is allowed to take place.

Fix that, not the requirement to have a permit to drive a cab (which is useful, as it acts as a filter for all kinds of scum drivers if enforced properly).
A good chart on price-spikes:

https://twitter.com/BarbarianCap/status/322071032934584320/p...
Why do people hate Margaret Thatcher
What DDoS attacks? So far I've seen no compelling evidence that this is anything but high volumes of legitimate usage.
The Hacker News?
That's from a week ago. Is there any evidence that a DDOS happened today?
"I hate it when people excuse a bad picture"

You just added that part, which has nothing to do with the joke. Interesting.
It's a crazy un-regulated trading market were you can get in some old fashioned market manipulation from some smart dudes and no one can do anything about it.

Personally I think Tulips were prettier, but I know most of you coders like bits.
> On the contrary this is just the most pronounced in a series of recent coordinated DDOS / aggressive selling attacks designed to (successfully) inspire panic.

The bitcointalk forums and /r/bitcoin are full of paranoia like this. After months of stress trying to divine market patterns, people see market manipulation and conspiracies everywhere.

The simple truth is that there was an agressive bubble. The doubling period for the price was halving with each iteration[1]. If you looked at the log plot[2], it still looked exponential! A crash was inevitable.

> On another note, mtgox.com the main exchange is shockingly unfit for purpose.

They have a big update scheduled for April 17th[3].

[1] https://bitcointalk.org/index.php?topic=171312.0;all

[2] http://bitcoincharts.com/charts/mtgoxUSD#rg180ztgSzm1g10zm2g...

[3] https://mtgox.com/press_release_20130409.html
Companies are implemented over people. They can be non-evil, it's just that all the incentives are against it.
So the true comparison might be standing naked on your walkway to your front door from the curbside, and saying people don't have a right to take your picture. It's prviate property that's publicly viewable. When expressed this way, then it's actually pretty easy to see how it extends to the real world (you have no expectation of privacy in the publicly viewable space).
No, scala's @tailrec annotation only guarantees that calls that can trivially be compiled to loops in fact are. You can't do better on a standard JVM without jumping through hoops (or, rather, trampolines).
The value of BTC is in the currency itself.

How much is a three year old's scrawled drawing with the note "I love you Grandma" worth? To most people it is worthless, but to the recipient it has worth. Its utility and use value to the recipient is not measurable. The utility and use value of any commodity is not measurable. The drawing has a use value even if no one wants to buy it - it is useful to the recipient.

Commodity values also reflect the work put into them. Let's say I assemble PCs. I buy $600 worth of parts - motherboard, disk drive etc. I spend an hour assembling the parts into a PC. I now want to sell it for more than $600 since I want to be paid for my time, maybe $50 for the hour - it is now $650 total. Each of the components of the PC I paid $600 for the parts of is more expensive because of the labor costs associated with assembling that component. So the value of a commodity is also connected to its labor costs.

Utility can not be measured as it is subjective - like the child's painting. Exchange value can be measured though. I can buy an OK pair of headphones for $20, I can buy dinner for $20 as well. So a certain pair of headphones are worth the same as 20 dollars are worth the same as a certain dinner at a certain restaurant.

We have had currency for thousands of years. Currencies have always held value due to their inherit value as a commodity, not due to being an exchange medium. Attempts have been made over the centuries to try to change this, but it has never been long lasting. The US dollar was backed by gold until 1971. Now paper currency has value due to the US government accepting it for taxes, stamps and so forth, but such things have been relatively short-lived through history so far. Paper currencies like Confederate dollars, Reichmarks in 1945 and such depend on political factors for their worth( http://www.moneymuseum.com/moneymuseum/library/texts/text.js... )
. Gold and other precious metals have retained value over thousands of years, no matter which way the political winds blew.
The standard thing to do now is 2-4GE per server, link aggregated (possibly split across two switches for redundancy), using multiple 48-port GE switches with multiple 10GE uplinks, and then usually something like the Juniper $10-20k 40-port 10GE switches. Some specific servers like SANs go direct 10GE, particularly if you're going to have 1-2 SAN interfaces and a bunch of clients (so you can use the 10GE uplink ports for it).

Enough things are CPU/memory/etc. bound that the "cheap" building block of a 1-2CPU server with 4GE, RAM, and some local disk is still more appropriate than buying a Xeon E7 with 10GE HBAs, in most cases. There might be an exception if you have per-host vs. per-core licensing for expensive stuff, or other artificial complaints, or a specific component (database?) which doesn't horizontally scale.

I predict $5k 40-port 10GE switches and commodity server on-board 10GE NICs in a couple years, though. Although at that point, you need something crazy to uplink the switches. 40GE is emerging, or you could use a non-ethernet option. SANs are the big application for 10GE now since you can comfortably fit all the clients and servers on a standard 10GE switch and don't need to uplink most of the traffic. Part of the issue with the higher speed ethernets is lack of a copper cabling option, particularly one which works with existing cable plants. (less of a concern within racks).
> That was obviously an extension of your statement

I didn't find it that obvious of an extension. If there is a "little sparkle of sense and justification in dealership laws" then the same argument should apply to Tesla and the only justification you give is that they don't currently have dealerships.
SmartAsset (YC S12) Expands Its Home Ownership Platform
The difference here might be that people who own bitcoin have a financial interest in keeping interest in bitcoin up, so they form a kind of implicit voting cartel, regardless of the real interestingness of the items?
Chief Digital Officer - CDO

Digital Archivist

Director of Fan Experience
I believe he's doing full text search on this by running Burrows-Wheeler on the data first. See here for more details:

http://alexbowe.com/fm-index/

I started reimplementing all of this in Go about a year ago, but moved onto other stuff before I finished.
Show HN: FutuHR, an HR Management Application for Small Businesses
I am currently taking operating systems (not virtually) and wanted to see the differences between what I was being taught and what is being taught elsewhere. I can say, that Berkeley's CS 162 https://itunes.apple.com/us/itunes-u/computer-science-162-00... is a decent program. Slides are presented as a video.
For textbooks, we had Operating Systems Concepts by Silberschatz. I didn't like the book that much. Hope this helps!

EDIT: I did like more the "recommended" book Advanced Programming in the UNIX Environment by Richard Stevens and Stephen A. Rago
I never made the connection to selling monopoly import licenses, but that's exactly it.
It's money laundering for btc.
Here's a clip of that joke: http://youtu.be/u6xaj2fC1jI?t=2m38s
Definitely, although it's not clear that ride sharing will increase traffic for sure. Cabs and Ridesharing are essentially car multiplexing. Absent an on-demand ride, most people would drive into the city, and then park there.
It would be disingenuous to suggest YouTube is not the de facto video sharing site. If they censor something, it's a big deal.

It's the same thing with Amazon, Google, Twitter, or iOS. There are ethical implications if you are one of the major conduits by which people communicate and disseminate information, regardless of your status as a private or public utility.

Legal? Who cares. Ethical? Maybe. A good idea? No.

You think Twitter doesn't feel responsibility if they close out an entire country from their service?

You are pretending there are lines dividing sides that are black and white.

https://yourlogicalfallacyis.com/black-or-white
Not even the Saturn V could launch 150 tons into LEO (though it could come close). No current rocket even comes close.
Sure, I get that. My question was: do you consider that indicative of real world performance? I consider that misleading. Especially if you are labeling benchmarks with tmpfs, HDD and SSD, when the read benchmarks are not even touching the disk.
My blog is intended as a safe place to express my personal frustrations with a very difficult life. It seems to be socially Verboten to speak of it anywhere else. I am not trying to make a good impression with it.

I find it ironic and rather ugly that the whole point other people are making is that being courteous pays off in a business way but when I state I am not seeing that I get attacked as not being genuinely polite for the right reasons (i.e. I am failing to genuinely expect nothing in return when these articles and discussions of them focus on the business benefits of so called common courtesy). I suspect part of the problem is that I do genuinely expect nothing in return and that often seems to be exactly what I get.
Wow, Kickstarter runs on Rails? I never knew...any one have an idea of how many users they have/ how many page views they serve? Just curious...
Ask HN: Need for a one-stop search engine for all online learning options?
Hi all,

In a recent MOOC at Stanford (Designing A New Learning Environment), I observed high enthusiasm for leveraging technology to deliver learning innovation. Within a decade, we will have an exponentially larger set of learning choices available. Another trend: learning is becoming lifelong, thereby increasing total market demand. So how will learners of the future choose? Clearly, using Google and jumping from site to site isn't going to cut it. Trying a class online may be free, but your time is worth money.

So what is the best way to search for online courses? I’ve tried the existing sites, but they cover a very limited sample of the online education universe.

I’m evaluating whether to build a comprehensive discovery engine. Do you see a need for one? See a demo here: http://get.prudentia.me

I’m also curious what might be the profile of early adopters of online courses. Have you thought about this as you build your own offerings?

Thanks,
Sunil

I blog about startup best practices at: http://blog.prudentia.me
I have become such a huge fan of doing analysis work in iPython's notebooks lately, I am curious how this will improve on it.

So far nothing works for me. The kernel keeps crashing and the package manager or login screen fail to work on my connection because I am behind a proxy. There are no options to set the proxy connection parameters, from what I can find. I would assume if they are targeting enterprise customers they should probably help with package management behind an aggressive proxy.
> Also speaking very hypothetically, why do you suppose that all the input electrical power is wasted for the propulsion goal? Each fusion mini-explosion will have a total energy that is the sum of the input (ignition) energy and the fusion itself, not just that of the fusion.

Yes, technically true, but consider this hypothetical scenario:

1. A power source, let's say 1000 watts, can be used for any purpose, or can be used to heat a fusion plasma.

2. A fusion reactor requires 1000 watts to sustain fusion but delivers 250 watts of fusion power.

3. The total power in the system is now 1,250 watts.

4. But that total power is not available for external uses. 1000 watts of it must perpetually be applied only to the task of heating the plasma.

5. That leaves 250 watts for other uses.

That means the fusion reaction uses more power than it produces, only 250 watts is available for other purposes, and there is no remedy except to not use the fusion reactor.

That's why break-even is an essential precondition for this project's viability.
What privileges do you get for self development at your work?
Like the headline says, what privileges do you get at your work for self development. Do you have a good strategy plan for each individual? Or do you just get time to do whatever you like?
What do you think is the best approach to get time for self development, and learn new techniqs, frameworks, test new tools, and also have alot to do at work.
Should it always be time for self development or just sometimes?
It sort of sucks that your TL;DR is "you never know what people might be able to do for you, so be nice".

Just fucking be nice to people. It's not always about what they can do for you.
that was the line mtgox was feeding people to explain why their trading platform gets so lagged out at times.
Hope the Ribbon guys manage to get it resolved. I think it's a great use of the Twitter cards feature and am slightly baffled as to why Twitter would even give developers access to the feature, if only to shut them down immediately afterwards.

I also agree with the sentiment that building anything on Twitter is a risky proposition these days. That said, there's still an appeal in doing so given the volume of users.
Taxi drivers significantly under report earnings for tax purposes. They always claim close to minimum wage. You'll find the same in every cash business.
One guy made physical coins for bitcoin:

(https://www.casascius.com/)
Exactly -- you'll occasionally hear people say things like "Google is basically keeping Firefox afloat" -- sure, it's a massive contract that does fund Mozilla almost entirely, but any of the other major search engines would love a chance to be the default install option. Think about what that would do for Bing.
You can do a simple terminal program in 10 lines. 10 commands probably not, but this is still fairly readable.
in perl, a simple guessing game that runs in linux/unix

#!/usr/bin/perl
$SIG{ALRM} = \&timesup;
my $random_num = int (rand(10));
print "Guess my number (0-9) in less than 10 seconds!\nGuess: ";
alarm 10;
while(1){
my $guess = <>;
if ($guess == $random_num){alarm 0;print "You Got it! Well done!\n"; last; }
else { print "Nope; guess again: ";} }
sub timesup {die "Uh oh! Time ran out while waiting!\n";}
Alexis Ohanian Asks Google, Twitter to Fight CISPA
What is it's intrinsic value? Nothing?
Most major financial exchanges, however, are sure.
UDOO Might Eat Raspberry Pi for Lunch
Can someone point to a big postgres replication failure event? I know mysql is getting better, but I still see public failures like this much more frequently than big postgres (or Oracle) failures.
I remember laughing hysterically when I read the phrase "command line for the web" a long time ago. The money has to come from somewhere eventually.
That's crazy, I have my money hedged into Beanie Babies.
It's until one-two major governments decides to make it illegal to deal in bit-coins that it's price will drop to zero.

It doesn't matter if they can't enforce it 100% (or even 1%). What matters is that it will kill almost all opportunities to use it as regular money for legitimate purchases by major companies etc in the future. And that it could also land your ass in jail (with ISP monitoring and such being what it is).

Why would a government do that? For one, because they don't like money systems they can not control. Second because they would argue it can be used for money laundering and such.

Time and again it has been proven that you cannot solve social issues with technology. For example a solution for private communication exists: cryptography. And yet, the government can limit what kind of cryptography you can use in your app or export, etc. And they can even throw your ass in jail if you have an encrypted file and you don't hand them the key. You have to go all the more deeper, and even that doesn't solve the issue of your dumb cousin exposing your secret in his plain text email to you.
Thanks. I actually have rather good boundries. I think my problem is a good deal more complicated than that. Given the ugly tone and assumptions of some of the replies, I strongly suspect that trying to explain further would be a bad idea.
Depends on whether they're able to distinguish between a DDoS and a good old fashioned bank run.
Your mentor has to be better than Marty Cagan’s book
This looks SMART.
one of the reasons is the stagnating internet connection speeds. In 13 years my net connection speed has only slightly more than doubled (10 to 24 Mbps). we should be getting Gbit internet connections and running 10 Gbit home/office networks.
Is Twitter trying to scare developers off of it's platform!?
This is an example of a partially downloaded app. There should have been a bundle of bootstrap stylesheets pulled from github, which didn't make it.
Yes, true but from the standpoint of the public, the professor's action was well-advised. A claim of libel would require that the student's identity become public knowledge, something the obfuscation prevented.

I'm speaking about the general issue of a potential libel action and invasion of privacy, not specifically about FERPA.
Why do you think I'm paranoid? It's my best guess. Despite my tender years I have seen many speculative bubbles in lots of asset classes and have traded them on a private and professional basis.

I agree there are plenty of people in bitcoin ready to be 'the greater fool' [1] but that's only if it fails... they will be self assured visionaries otherwise...

[1] http://www.amazon.co.uk/Devil-Take-Hindmost-Financial-Specul...
Yes, and that's why I continue to happily read Hacker News. You missed my point that I believe it's excessive to have a "news story" every time Bitcoin fluctuates. I would love to know how many Y Combinator or other startup companies are transacting in BTC -- my guess is under 1%.
Not the author, but I don't think visualizing neural networks is useful for understanding the general concept. I think it's useful for understanding a specific network. For example, if you see the weights change extremely quickly, that means your learning rate is probably too high. If you run a network 3 times and see completely different sets of weights, that tells you your model is highly unstable (not necessarily a bad thing.) It can also give you a sense of whether you have a lot of features that matter or just a few.
Fortunately or unfortunately, the potency of a legal tender is not a matter of "deep math or deep computer science" but a matter of confidence and scarcity. That is all.

In the past, people bought things with precious metals. These had to be scarce to be of value. This is the basis of modern day "money or currency". Let's take the dollar for example. Because it does not physically exist and is rather made-up, it is scarcer than gold or silver, hence more conceptually sound and more highly prized. And because, somehow, there is broad agreement on the dollar's tenability, it works so well. These two factors -- confidence and scarcity -- are the fundamentals of supply and demand. They are the only things Bitcoin must fulfill to take hold as a broad legal tender.

Today, Bitcoin is rather scarce because its creation is exceedingly computationally expensive and arcane. This meets condition one. Condition two, confidence, is not yet satisfied today by Bitcoin. Broad confidence takes time. Until both are met and sustained for a long and tried period of time, Bitcoin will not gain broad acceptance. This means Bitcoin very well could.
I just noticed it is a Diesel powered model, which have lower operating costs (in my experience). Still, for the amount of safety/features you get in that car, the cost is good.
data attributes are baked in to the html5 standard
Google, Twitter, & Facebook: We need to know if we can trust you
I did a screen recording of the app as it tracked a real flight and during the editing process I made sure to stay true to the times.
Scala compiles direct tail recursion the a jump to the start of the function (jumps within a method are possible on the JVM) without any trampoline.

So @tailrec tells the compiler to compile this call to an unconditional jump.
Hi Chris,

thanks for describing promise/deferred. What i miss though is an explanation, as to why this is better than simple callbacks/events especially in the javascript world.

In the end, i have to define callbacks in the promise anyway, so why the whole caboodle in the first place?
The past tense is presumably because the GP doesn't want to use a tool produced by Elsevier, so as far as they are concerned the tool no longer exists.
I've seen ballast bags as well (even on nominally "modern" sampan boats). If I were a sailor 4K years ago I'd probably optimize for cost first, speed second. But I don't have a good idea for how much effort it takes to fill ballast bags so I can be very confident in reasoning about where they would fall on that scale.
Yeah, I was halfway through the video waiting for some overlay of the actual service or... something.
Google Chrome is getting autocorrect
Here's the post about this on Ribbon's blog:

http://blog.ribbon.co/an-update-on-in-stream-payments-on-twi...
Nice writeup. I've been wrestling with MySQL replication for a few months, too. I have a multi-master setup with an additional slave off-site that stores backups.

I've switched entirely to row-based replication because it offers one really nice feature: in the event of a desync, I can resync the slaves with a query like this on the master,

create table new_table like bad_table;
insert new_table select * from bad_table;
drop table bad_table; rename table new_table to bad_table;

...and bam, everything's groovy. On a VPS, I can have the slaves resync'd within a few minutes this way on tables with > 1m rows.

The other pretty important thing to have is fast notifications of trouble. It sucks waiting for the slaves to catch up on the binlog from the master. I wrote a shell script that runs from cron every few minutes, checks the replication status on all hosts, and lets me know if there's trouble.

Being a few days behind in replication can take hours to catch up; being a few hours behind only takes a few minutes to catch up.

I'm really looking forward to trying out Percona XtraDB-cluster and seeing if they handle any of this stuff better than stock MySQL.
This is the Kickstarter stats page: http://www.kickstarter.com/help/stats

It doesn't have to do with traffic and insights into how they keep the site up and running with x amount of traffic and users, but it's still interesting to see everything about the projects there.
No, it just tracks which developer has good ideas, makes their applications against TOS and then implements the same thing badly.
Basically this is watching a whole lot of people getting into FX game without even knowing they're in the FX game or even know about FX. I wonder if senior FX sharks sniffed blood and gamed bitcoin into this. My 2c says it's gamed exactly by FX pros, that's why I'm not into it.
I'll agree with Pent that it's subjective, because I love it too. Wouldn't ever want to go back to the old one.