skysight-inc/HackerNews huggingface dataset:
You are correct; the FFT or DFT is not the same thing as the continuous-time Fourier transform (CFT).

This technical report[1] examining the relation between the DFT and CFT shows in eq. 20 that the DFT is just the CFT evaluated at w=k2pi/(N*T). As N becomes large (number of pixels is large), this approaches the CFT.

I left this detail out; I wanted to put this in terms the reader knew.

[1]:http://bsp.pdx.edu/Reports/BSP-TR0201.pdf
In the long run, if self driving cars work, people will no longer be qualified to operate their vehicles. Would you let your toddler move the car 10 feet to pick up grandma?

That said they will almost certainly have a manual override in these things, it will just be tucked away out of view.
This is about proportionality. Finite window trading strategies need to take into account the link between implementation overhead (time) and overall profitability (linked to time). Just the same way they need to link pricing and profits (linked to pricing). That seems to be the crux of the issue.
1. Yes
2. Yes, but only for the portion of your time that was SR&ED activities, which if you're the only employee couldn't conceivably be anywhere near 100%.
Just download the Google Steering Wheel app.
I'm an experienced Unix admin, and I actually wrote my own versions of these csv tools long ago instead of using coreutils. I had a lot of different datasets to with with, and it turned it there were so many inconsistencies in the CSV data that I needed a tool that could handle it all.

It also became super simple to extract and munge data with options for tabular data. With two tiny commands I can exclude rows, include rows, sed columns, merge tables, and export new tables, all with just csv files. So it's pretty handy.
As someone who keeps tabs on the poutine and labour markets back home, I can vouch for everything you said.

I don't even live in CA/NY (so my gross pay multiple isn't quite as high, but income net tax/cost of living is pretty great) and there's just no comparison. I probably make 60-80% more total comp in the USA than I would expect in a major Canadian city, and that's not even accounting for higher taxes (depending on state/province), frothy Canadian real estate valuations, and higher consumer prices almost across the board.

But Canada sure is a great place to live and I miss it dearly. I still hope to move back one day.
Hey folks,

I'm trying looking to get some feedback on my ruby gem that allows you to post events to graphite from a capistrano deployment. I'm pretty new to Ruby and am looking for any critiques or suggestions or even just a "hey, I use that!" Thanks in advance.
Forgive my crankiness, but: Does this say anything that the casual follower of self driving cars doesn't already know? All I got out of this was:

- Self driving cars would be awesome, for well known reasons.

- We have to use a lot of good sensors to make this work.

- It's an interesting problem.
That sounds cool, although most cities already have something similar in the form of buses, which are cheaper and more efficient than what you're talking about.

In any case, they will probably not start by having a huge fleet, but by selling them as personal vehicles.
It's exciting to think that for the younger people now those sorts of issues are likely to be "fixed" when they get older.
I would not be at all surprised to learn that computers are better at driving now. One interesting (albeit expensive) way to test this out would be to put some computer controlled cars into demolition derby races and see how they fare in artificially hostile driving environments where the human participants are extremely risk-tolerant.

I'm very glad that California has legislation in place to allow this already, and think it's going to pay off in spades to be a leader in this area. My bet is that insurance will be baked into the price of the first generation of cars (ie subsidized by the manufacturers), liability rates will be extremely low, and there will be an avalanche of consumer switching over a fairly short period of 10-20 years.
Google’s Next Phase in Driverless Cars: No Brakes or Steering Wheel
If the car's display shows a map of the surrounding area, and that map includes not just static objects like buildings, but also includes other cars, people, etc. (based on sensor information), is touching a spot on the map to make the car go there really a chore?
A lot of the talk is on SRED credits. SRED is a large part of the credit program for startups in Canada. Though it's not as simple as "Canada pays 80% of your salaries"

You can get up to (off the top of my head) 75% of salaries paid back on hours worked "advancing technology". That means it's only for true R&D. That means UI, business logic, API, App anything, expenses, costs, etc... don't count. It's only for when you embark on a project that truly advances the worlds state of technology where you can really reap the benefits of SRED.

Most startups, as sad as it may be, don't truly advance technology. A lot create value, yes, but advance technology? not really. Certainly not all year. So they'll only get 75% of salaries paid for the hours they worked on advancing technology.

You'll get that back at the end of the year as one lump sum. It's awesome. However, it goes to the company and the company has to have already funded the salaries -- it wont fund salaries, it will reimburse them.

On top of that the system is so hard to navigate that you'll end up requiring a consultant to navigate it. They'll take a cut, between 10-20%, of the return.

It's not as simple as the article states, and our poutine doesn't look like that.
It says that Google are building the cars.
Did you have any problems filing the papers with the provincial/federal govs? I'm guessing it's a lot of work.
Google is to start building its own self-driving cars
Yes, I'll agree with that. Just warning about throwing the baby out with the bath water. Applying quantitative decision making tools is worthwhile, being picky about it can protect us from our emotions and preconceptions.
Is the work atmosphere more relaxed in Canada? For that matter, do the East Coast/West Coast culture stereotypes hold true for Canada?
Try Scala. It's a very expressive language that does not sacrifice on power (JVM/type safety).

As a long time professional Perl programmer, I've given up on it. The heartache it has caused on enterprise teams I've been on is not worth the rise in blood pressure. And I'm starting to think that it is inefficient in its yield per unit of effort ratio. Writing good, scalable, clean, modern Perl requires so much couching and qualifying. My teammates couldn't even write good Perl. And so despite my want of evangelizing it, pitching to younger programmers is probably not useful/efficient.

But no, I'm not bitter. =)
This article is light on facts (which is surprising to see in the wsj). This program is called Scientific Research and Experimental Development Tax Incentive Program. And, qualifying for a full SR&ED isn't as easy as they make it sound. To learn more, visit:

http://www.cra-arc.gc.ca/txcrdt/sred-rsde/menu-eng.html
And when I want to resume reading? What then?

Let's not be obtuse, yeah?
You will still come out ahead in SF vs Toronto
http://www.numbeo.com/cost-of-living/compare_cities.jsp?coun...
Seeing as how they're a common (and, IMO, very pleasant) user interface idiom on mobile, I think it's very reasonable question to ask regarding the web.

You made a claim about "users". Data to support it would be nice.
Yeah, they immediately start parsing and backpedaling the headline: "the Canadian government is paying almost 80% of his <developers>' salaries.". Still disapointing they don't delve into the actual program structure though.
I wouldn't compare it to buses, I'd compare it to taxis combined with zipcar. Buses don't have the destination/pickup resolution that a small 2-4 seat vehicle has.
I'm an Amazon Prime subscriber, and have been for years. For most of that time, I've automatically bought stuff from Amazon, aware that occasionally I'm paying more than elsewhere. The reason is convenience. Order almost anything, get it fast, with no extra shipping cost.

This spat has forced me to occasionally shop at Barnes & Noble. And I gotta say, if I have to go to two stores to get items, Amazon's convenience edge is much smaller. Just the other day, since I was on B&N I bought things there that I would normally have gone to Amazon for. Again, it's the pure convenience.

I have no idea whether I'm typical or not, but if I am, then I think this will hurt Amazon more than Hachette.
Why don't you include your gmail into your HN profile anymore?

Does it mean you don't want us to contact you?
Why buy a self driving car when you could rent one as needed?
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"check my previous responses and my credit score for how you should treat me" ohh what an old-man response. It's too bad the Imgur "downvote everything they ever posted" script doesn't work here on HN, now isn't it?

My account's karma and history exceed your account's on this site, and even worse, this individual comment bears more value than yours! Ooh burn!
Tesla (or insert company willing to go big on electric cars) and Google really need to team up on this. Self driving cars have the potential to completely do away with owning personal cars. Imagine a new public/private service that allows people to travel where & when they want without having to deal with the hassles or cost of owning a car. With the added centralization, the headaches that electric cars cause can be eliminated with a bit of logistics planning (cars are interchangeable so low battery cars can go straight to a charging station instead of wait for their owners to take them to one).
This reminds me of MessageParty, a location-based chat app that was a YC company.
In theory SRED is supposed to be for R&D. You'd be surprised what can count for R&D. Doing A/B testing to solve the problem of which UI is more preferred/efficient? That can count for SRED work.
I'm not sure, I got the same feeling from the other profiles.
Have you looked at Radius (http://radius.com/)? Never used it, but recently came across it while doing market research.
Tell me your Top Sites and I will tell you who you are.

My Top sites:
1. www.google.com
2. stackoverflow.com
3. wordpress.org
4. en.wikipedia.org
5. maps.google.com
Show HN: ROAR – a wearable safety device for women
Hi all, I'm launching a landing page to announce my new startup - www.useROAR.com - a tech wearable company aimed at reducing assaults against women.

We're finalizing the prototypes now and will be crowdfunding on CrowdTilt or Kickstarter later this Summer. The page is meant to collect emails of those interested in learning more about what we're doing so we can have a community ready to go when we announce the campaign.

I'd love to get thoughts from men and women on what you think of the messaging and the idea. I'm here to listen!

[EDIT] - Here's an album showing our circuit boards for the prototypes: http://imgur.com/a/O85fs There are actually two different versions as we're testing out using a rechargeable battery and a cell battery. Each one has a 75db alarm, a bright flashing light, and a bluetooth chip that connect to a smartphone to send a distress text/call.
Definitely +1 for Snip2Code: it is saving me tons of time looking for the best snippet and it is also giving me a truly powerful and engaging user experience.
I have tried other apps to search and collect snippets but Snip2Code is definitely a MUST!
Copying content from vim to Mac OS clipboard
People seem quite comfortable with the joysticks on those electric mobility scooters that are all over the place, and I certainly see more with joysticks than with handlebar steering nowadays so the market seems to disagree with you.

I'm not sure why you and a few others think a joystick will be problematic. Of course, there will be a bunch of tasks/use cases for which these cars won't be suitable, but so what? there's many use cases for which bicycles and motorcycles are unsuitable, but lots of people still use them.

I can certainly see using one of these things for local get-around driving, because I hate to drive and my wife can't.
60k/yr to 180k/yr are not unbelievable salaries for a junior Canadian moving to a now more senior position at a big silicon valley tech company.
interesting site, plugged in Victoria Canada (city my company is in) and numbers seemed a little off for rent currently listed in craigslist. +170% on website more like +300% from quick look in craigslist.

also doesn't factor in time commuting, quality of life, avg hrs worked per day, etc... would love to see a pay breakdown $$ / hr worked (at office).
Ask HN: is Nginx trusted?
Given that it's developed in Russia, does the Russian equivalent of the NSA have code in there?
It's more relaxed in Vancouver and Halifax. Less so in Toronto.
I wonder if the combination of total Hachette sales weighted by the portion of overall book sales via Amazon would be a reasonable approximation.
I wonder whether they will first become available as a product that individual people can buy, or if Google will open some sort of service where you can sign up for a monthly "car plan" for X miles. Or maybe partner with a taxi company/Uber, where you pay per ride but the cars are driverless. I imagine all 3 models will be tried at some point, and it'll be interesting to watch their development and which one eventually dominates.

Also, commuting could be done so much more efficiently. Imagine a fleet of 1 person cars that pick you up in the morning, drop you off at a more central location (than your house), at which point you get on a higher capacity (driverless?) vehicle - bus or van maybe - for the trip into the city. And the bus unloads into another central area, with another bunch of small cars taking people to their offices. I'd use the bus if it never stopped, and that system would be almost as fast as driving yourself. Heck, it'd probably be much faster, because the hordes of people people sitting alone in their sedans would be consolidated and eliminate a lot of highway congestion. Not to mention cheaper, and better for the environment (less gas).

I haven't heard much about addressing the legal and regulatory issues driverless cars are going to have to overcome, does anyone have more information on that? Obviously something will have to be done for when the car wrecks or malfunctions and damages something.
Don't underestimate how expensive Canada is. I recently moved from San Diego to Calgary and everything here is more expensive (groceries being the most extreme at 40-60% more) and unlike San Diego, Calgary doesn't have an ocean.
The trick to SRED is to hire an outside expert who will work on contingency to get a percentage of the SRED rebate they generate. There are many companies providing this service. These folks are experts on writing the necessary reports/forms given your engineers have written detailed logs of their work. Don't try to do SRED yourself. It's just one of those things, like hiring a lawyer, where it's complete lunacy to do it yourself.
How To Get Better Tips As A Waiter/Waitress
I'd argue that the entire propose is to expand beyond 'casual followers.' The challenge of self driving cars is ultimately a social (more than a technical) one. Distribution. PR. Legal.
Who's Afraid of Amazon.com
Clickable link: http://www.useROAR.com
Mine too except I disabled it back in December.
You shouldn't be doing a Show HN on a project that has nothing to show for it yet.
For manual controls your could just plug in something like a PlayStation controller into a USB port or even a Phone app via Wifi/Bluetooth to control the car.

No need to have permanent wheels, levers and pedals cluttering the "passenger" compartment.
@rubiquity calgary is oil country that is why you are seeing higher prices
"Vesper is yet another notetaking app. Money please!"
Actually, capabilities makes it trivial to lock down things like shutdown for admin accounts. A script can do the shutdown instead in a more controlled and less error-prone fashion. Same for network device updates. Abstraction.
You're going to throw about 200 brands at me and call it complex? Is this a joke? Have these people heard of computers?

It's a flowchart. It looks like you haven't even tried to create a list of players. If it's less complex than SQL double-hop then it's not complex.
Correct. That's one reason I think that Chicago's decision to privatize parking was an inspired one. The city got a great deal of criticism for giving a decades-long revenue concession to a private operator for a relatively low up-front cost, but all the critics assume a constant or increasing demand for parking based on historical usage patterns. I think usage patterns are going to change radically and that we'll see far lower traffic densities in the not-too-distant future.
Would it help if I posted pictures of the prototype board and explained the mechanics behind it?
1) he got stuck in Russia, he didn't flee to it. When you say things like that you appear pretty uninformed about the situation to anyone that cares.

2) In this scenario, the American People would be the FBI, and the criminal conspirators would be the NSA and Snowden is Sabu. I can think of very few more noble activities than exposing the fraud of a working government to the very people who have a chance at changing it via the power of a democratic society.

It's ridiculous to even compare the scenarios, as the motives between the two are so different, and I hope anyone can see that. Look at the audiences at least. Sabu has gained personally from every single decision he has made; whether it was for his own agenda or for the FBI's after he was caught. What has Snowden achieved for himself?
This suggestion comes up whenever the topic of self-driving cars arises, but I wonder if access to a fleet of self-driving cars would be more akin to a cheaper taxi service than a replacement for car ownership. I suspect that many people would still prefer to own their own (self-driving) car rather than rent one from a fleet only when required. However the privately owned self-driving car could still drive itself to the nearest charging station when not in use so I agree with your premise that self-driving and electric car technology has some synergies. Being a high-tech automaker, Tesla would be an obvious licensee for Google's self-driving technology once it matures.
That would help significantly.
The first thing I think of when I read the title of this post is "How is it different to a rape alarm?" this page does not answer that question.
Matz admits that he might have stolen too much from Perl and got some "whale guts" over his shoes - but only a little.

From the obligatory Yegge rant: https://sites.google.com/site/steveyegge2/tour-de-babel
They're not. That's a statement of what customers have enjoyed up until now. The actual SLA simply states what refund you get for each hour of downtime.
Please hire me!
"Is there a way I can be paid like an analyst but less fucking stupid?"
From the stories that go into detail about google's self-driving cars, it really seems like at this point the driver-take-over situation is really more like a breakpoint than an actual safety valve. It's there for when the computer has multiple reasonable options and the driver's judgement and awareness is needed to help resolve the ambiguity not just for that ride, but for future rides as well (as a sort of feedback).
Thanks for the feedback. Coming up in a few!
Yeah I guess my starting point coming down from Canada was a bit higher and I'm not in Silicon Valley so my data points are less exciting.
I'd have him continue his previous activities in a similar fashion to avoid the chance that his current actions are a message to important actors that he has been poisoned or is being watched in some way.

everyone knows he's an actor for the state anyway, but a quick temperance change online would be a pretty big red flag for many.
227/10 = x/π = y/e = z/n
Maybe I should have that as an actual question. It's basically combining the functions of a rape alarm and an emergency kiosk (like those in campus) to sound an alarm and call for help, sharing the location of the wearer. Is that better?
The man with the glasses is Steve Mahan, the blind man from their previous video:

https://www.youtube.com/watch?v=cdgQpa1pUUE
It's always nice to have an actual mechanical linkage to the steering and motion, if the electronics had issues it could just as well affect the BT link from the phone or controller. I'm not familiar enough with all makes and models out today and perhaps there are plenty of examples where wheels are already just "controllers".
White one looks better. Overall design not too bad, especially if they want them to be immediately recognizable.
Note that all those examples are very low speed uses (< 5 mph). It would be completely acceptable to control the car with a handful of dashboard buttons no larger than the buttons to roll the windows up and down. (As mentioned by other, pedals and a steering wheel would be overkill for these rare situations.) And there's really no need for Google to have mentioned it in this blog post, nor would you have seen it in their rendering, so the post is completely consistent with your concerns being addressed.
It seems like they would eventually have a four-seater version but the bench seats could face each other.

What a simple thing but so different. Maybe like suicide-doors used to be common in the US but they're such a novelty now.
He's bringing down the number of needless complaints over the long run. If he has to complain a bit in the short term to make it happen, well, that's worth it!
Do you mean they're self-satisfied enough to write themselves a framework, but too myopic to see that writing it is a massively misguided waste of time?
It is work, and about as arcane as you would expect a government form to be. You need to track your eligible hours for SRED on a weekly basis or throughout the week (as an employee). As an owner you need to deal with capital expenditures as well.
There's nothing Firefox-only about asm.js. It's a subset of JavaScript that runs in other browsers at reasonable speed since it's part of benchmarks that browser vendors are optimizing for.

The pragma may be Firefox-only but nobody cares about that.
AAAS - Automobiles as a Service.

That could actually be pretty cool. Basically, a ZipCar + Uber that doesn't suck. That would be the dream.
DOWNVOTE FOR TRUTH
That'd be a great addition, showing the product on the landing page and listing its unique features in a way that can be glanced over and understood is essential.
WHO'S AFRAID OF AMAZON.COM
The source code is available, so theoretically you could check.
One interesting point is why is the far-field amplitude of light diffracted by the lens a spatial Fourier transform? The best explanation I know of is in Chapter 21 of the Feynman Lectures on Physics (vol 2), accessible online (thanks to CalTech) at http://www.feynmanlectures.caltech.edu/II_21.html#Ch21-S3

In short: Moving charges create electromagnetic radiation (light). Since light travels at non-infinite speed, when a wiggle of light reaches us, we're actually seeing the imprint of the motion of the source charges at an earlier point in time. This earlier time is clearly related to how far the observer is from the source. Hence, if the distance is r then at time t we would be seeing the wiggle of the source charge at an earlier time = t - r/c. For a collection of source charges we need to integrate the delayed source potential over the volume of the source, so it's intuitively clear why that would be a Fourier transform.

There's technicalities of far-field and 1/r fall-off, which I've glossed over, you can find full details in Chapter 21. The final line is a gem: 'You will not, then, be surprised to find that the laws of electricity and magnetism are already correct for Einstein's relativity. We will not have to “fix them up,” as we had to do for Newton's laws of mechanics.'