skysight-inc/HackerNews huggingface dataset:
Should you? I agree you should be able take pictures of buildings and landmarks, but I'm not sure it's an absolute right.

Here's an example (though a bit contrived) where I don't think that right should (or does) apply: during the recent World Cup, many cities in the US showed the final on large screens at public parks. Are you allowed to take pictures of of the park that contain a portion of FIFA's copyrighted broadcast? How about if you take 29.97 pictures per second of the screen, carefully cropped so you get none of that annoying crowd?
IBM Discloses Working Version of a Much Higher-Capacity Chip
How does Deutsche Telekom stack up against Comcast on a per-mile cost basis? I.e., what does it cost, on average, to send a bit over the same distance, with the same latency, on each network?

We have to go by a per-mile (or per-km) statistic here because Germany has a vastly higher population density than the US, which means that it has to put or buy far less cable in the ground to build an equivalent telecommunications network in Germany.

Before anyone pours more hate on Comcast, does anyone actually know the answer to this question?
AI Startup Neokami Raises $1.1M for more developer APIs and packaged AI products
> Interpretation isn't law, so in any legal dispute over the

> IRS actions under the current interpretation, the law which

> would be controlling is not retroactive.

This is to me a very weak argument (not that I disagree that this may be the standard that is applied in practice). If the Congress passed a law saying "the IRS can set tax code as it sees fit" and the IRS proceeds to levy taxes all the way back to 1980 on people as however it so desires, you should not be allowed to use that law as grounds for not having violated the ex post facto requirement. If this is the current understanding of what is allowed, I must vigorously object to whichever judgement left this precedent.
I can't find any diagrams explaining the mechanics of the restaurant (or even exactly what rotates); which upsets me. -Can someone provide more information/pictures? Even with amazing balance I don't understand how there isn't massive friction caused by whatever it's running on...

Nearly everything says it's a single 1.5hp engine (upgraded from 1hp), however there's a case study by Graybar who did a retrofit in 2013 [0] which makes it very clear that there is (and was) actually _two_ motors, both in play. -once again, if anyone has more information? I'm massively intrigued.

"The major problem was that the two existing drives were fighting to share the load – one was lagging and the other leading. The two gear boxes were constantly adjusting according to inputs from the motors, which caused both the noise and roughness during the rotation. The team determined that the best solution was to upsize the motors, drop motor revolutions per minute (RPM) and reduce the reduction ratio with the new gearboxes. So they recommended Schneider Electric drives as well as various automation and control products to the Space Needle engineering staff. The new motors were equipped with encoders feeding the drives in a master/slave configuration. Along with this, all new controls were installed, including a wireless control system. Schneider Electric also provided engineering and software support, both at the integrator and jobsite facilities."

>>> edit: I'm wondering what wattage this/these 1.5hp motors are; the Falkirk Wheel is a rotating canal lock up in scotland. It manages to simultaneously lift/lower two canal boats + water 35 meters for only 1.5kWh of energy (and has a pleasing gear system) [1] [2]

[0] http://www.graybar.com/documents/graybar-keeps-tables-turnin...

[1] https://en.wikipedia.org/wiki/Falkirk_Wheel

[2] https://www.youtube.com/watch?v=n61KUGDWz2A
Thanks for your answers, and best of luck with your business.
'What the Heck Is a 401k?' and Other Investing Q's You're Too Embarrassed to Ask
Yes! We work seamlessly with Zenefits (you'd simply add us as an external administrator).
I'd argue that Osborne moved too quickly, he was announcing the future (and they didn't deliver it too slowly, they just announced it too quickly) and subsequently committed suicide (figuratively, of-course.)
Thanks, appreciate the pointer - the idea of adopting something potentially a future standard through a polyfill is appealing. @pvg I take your point about lack of browser support, but that's what polyfills are for after all! :)

In the meantime since asking I also came across restful.js (github [1], blog [2]) - it's new, but looks like a good framework-neutral alternative, if a little heavy at 27K minimised/uncompressed.

Edit: Actually, fetch.js + es6-promise-min.js = 26K, so not much in it.

[1] https://github.com/marmelab/restful.js
[2] http://marmelab.com/blog/2015/03/10/deal-easily-with-your-re...
They say "If you already utilize OAuth tokens or any other authorization mechanism, you can easily setup API Gateway not to require signed API calls and simply forward the token headers to your backend for verification." It would be nice if AWS would stand up an authentication service that could handle oauth. Or do they already have such a thing?
I seem to recall the ps4's Cell shipping with 2 out of 8 cores disabled because of the failure rate per wafer.
Confessions of an Ex-Opponent of Whois Privacy
As a former hardware engineer who worked on automated test equipment that tested ASICs (and did ASIC dev), there are a lot of different methods used to avoid this.

As others mentioned, most of these problems are caught when testing the chips. Most of the transistors on a chip are actually used for caching or RAM, and in those cases the chips have built in methods for disabling the portions of memory that are non-functional. I don't recall any instances of CPUs/firmware doing this dynamically, but I wouldn't be surprised if there are. A lot of chips have some self diagnostics.

Most ASICs also have extra transistors sprinkled around so they can bypass and fix errors in the manufacturing process. Making chips is like printing money where some percentage of your money is defective. It pays to try and fix them after printing.

Also, as someone who has ordered lots of parts there are many cases where you put a part into production and then find an abnormally high failure rate. I once did a few months of high temperature and vibration testing on our boards to try and discover these sorts of issues, and then you spend a bunch of time convincing the manufacturer that their parts are not meeting spec.

Fun times... thanks for the trip down memory lane.
3D-Printed Explosive Jumping Robot Combines Firm and Squishy Parts
For starters: https://en.wikipedia.org/wiki/General_Motors_streetcar_consp...

A lot of the removal of rail capacity has been short-sighted, and often for the gain of automobile manufacturers.
I don't know that anecdotal evidence about driving conditions is really a great way to talk about driving on gravel. I'm also an Iowan who grew up on gravel roads and frequently drove faster than 50 mph, but if I'm being totally honest I recognize that it wasn't a great idea. On more than one occasion a loose patch of gravel or surprise deer has nearly sent me into a tree at 60 mph.

Sure, the people who frequently use those roads are the ones who will know them best and be able to predict their condition, but your stopping/maneuvering power is so much worse on gravel that assuming an average speed of anything greater than, maybe even near 50 mph seems pretty reckless.
Charles Marohn of Strong Towns (http://www.strongtowns.org/), who is quoted in the article, did a great podcast interview a while back on "how the post-World War II approach to town and city planning has led to debt problems and wasteful infrastructure investments": http://www.econtalk.org/archives/2014/05/charles_marohn.html
No, employees can opt-out and make trades as they wish. We add extra fund options to each plan to make sure that this is possible.

That said, we've found that most 401k users don't want to bother with analyzing and choosing between dozens of confusingly-named funds. They're much happier (and better off financially) with a solution that automatically gives them a globally diversified, low-cost, regularly-rebalanced portfolio without doing any of the work.
Honestly I'm pretty sure your iPhone slows down after a year because they build the software that way on purpose so as to incentivize you to buy a new one.
From:
http://www.forbes.com/sites/maggiemcgrath/2015/05/15/what-th...

"Only about half of American workers have access to a 401k, which is a workplace savings plan that lets employees invest a portion of their paycheck before taxes are taken out. The savings can grow tax free until retirement, at which point withdrawals will be taxed as ordinary income. A large majority of employers will match an employee’s contribution – up to a point – thereby boosting the employee’s savings rate."
That is true for a uniform prior but not a general prior.
> Just tax them at whatever your marginal tax rate is less 5% and call it a day. The rich would howl at the suggestion

Well, their accountants and financial advisers might, since their work of structuring things to make sure most gains are long-term and in the right categories would be less valuable. But cutting taxes for all taxpayers -- including the rich -- on short-term games, and for most taxpayers on several categories of long-term games, may not that widely object to by people paying capital gains taxes in the first place.
Thanks!

It is possible. We are coming out with a new LED T5 lamp where we can easily customize the output spectrum. It would be fun to work together to find out the ideal spectrum.
My cofounder (hn:roger_lee) and I started working on Captain401 because we both had bad experiences with 401k accounts. As an employer, he kept putting off setting one up because of the time and cost involved. As an employee, I became frustrated by the archaic web interface my Fidelity plan had, and felt overwhelmed by the task of choosing investments.

Captain401 is designed to make both sides of the 401k experience as pleasant as possible. We offer paperless administration to employers and automatic ("robo") advising to employees. We hope a tool like this will bring retirement savings to startups that had previously considered themselves too small or too busy for a 401k.

We're especially interested in hearing from HNers who run their own business: have you set up a 401k plan for your employees?
I know nothing about silicon fab, but I can't help but wonder how they mitigate the effects of quantum tunneling at such a small scale?
Transistors don't fail for the same reason the 70 year old wires in my house don't fail. The electrons flowing through the transistors doesn't disturb the molecular structure of the doped silicon.
"Trading an asset"

What exactly are you trading? Bits in a database that mark ownership of a fraction of a fictional entity?
The idea is that that would be very easy :)
Hasn't Greece been running a primary surplus for >18 months now?
That's completely incorrect... the chances of a fund having that record through luck alone are astronomically low.
I would set up the situation more like the state passing a law saying that an agency, call it the Battery Protection Agency (BPA), can decide what constitutes battery. Then the BPA decides in 2015 that verbal abuse and insults constitutes battery, and prosecutors proceed to arrest people for insults going back 5 years before the BPA's 2015 decision.

The parallels to the IRS case should be obvious, and the above hypothetical scenario is very much what the constitution was meant to protect against.
You're not doing tax loss harvesting in both portfolios are you? There are tax implications to that.

Also, comparing returns on different portfolios in different services is meaningless. You could have had a bond-weighted portfolio in one service and a stock-weighted portfolio in the other; saying that one service is better than the other because it had better returns makes no sense. The service you use can't possibly influence the performance of its underlying funds.

You should compare them on factors like features offered, ease of use, fees, customer service, etc.
It drives me insane that we haven't decoupled retirement accounts from employment as we're starting to with healthcare.

Solo 401k? 401k? Roth 401k? IRA? Roth IRA? SEP IRA? SIMPLE IRA?

FFS, just create legislation for two types of retirement accounts, pre-tax and post tax. Restrict by total yearly contribution between all accounts, with another limit for employer contribution. Setup contributions from both employee and employer with ACH routing and account numbers. Problem solved.
You should try it in Hyper-V. GPU-accelerated desktops are still no good, but everything else performs really well.
It's a good quote, and a sentiment that I've seen echoed by CTOs and VP Engs who actually are running or are currently migrating their companies to microservices.

That said, I feel the quote should be: "As of 2015, almost all successful microservice stories..."

As the tooling and knowledge around microservices builds up over the next few years, I could imagine a world where starting with microservices makes sense. For a new company, the flexibility you get with microservices to try new tech and throw out failed experiments could result in much faster iterations, helping to nail the product-market fit.
Might as well form a company that does both. Then you can make money from causing the problem and from solving it. It'd be the broken window fallacy on an industrial scale.
The very reason they're in this predicament is that they don't pay taxes. And no, it's not just the 'magnates' (whatever that means) - it's everybody. They can't collect on 15 billion dollars a year, if they had collected just half of that the last 5 years, there would now not be a problem at all! Look, it doesn't make sense to argue with you since you clearly have no idea what you're talking about (no, US companies do not 'dodge' tax through Ireland, they'd be raped by the IRS if what they did was illegal), it's just that populist blaring like yours seems to take over any discussion on this topic - which I have fully internalized after 20 years on the internet, and still sometimes it irks me.
And how long is LibreSSL on the market? A year? It's hard to call it proof.
It's easy to point intervals longer than whole LibreSSL lifetime with no
security bugs in OpenSSL.
Speaking of the effects of component failure on chips, a couple years ago researchers demonstrated self-healing chips [1]. Large parts of the chips could be destroyed and the remaining components would reconfigure themselves to find an alternative way to accomplish their task.

[1] http://www.caltech.edu/news/creating-indestructible-self-hea...
Excellent comment.

I always find it infuriating when someone says "I have a college degree" without specifying the major. What does it mean you have a degree? A degree in what? Farming? Psychology? Pet sitting? Mathematics? What can you actually do?

I would amend your last advice with "... and if the lucrative career doesn't need a degree, don't go to college at all, learn a useful trade, don't get in debt for nothing and start making money right away doing something useful".
Microservices are great, but the underlying protocol they run on is important.

If you're building a REST interface to all your services, and something consumes them - they might be slower than a monolithic app unless you have something like a TCP or HTTP level keep-alive built in. Connections need to be long standing - otherwise the overhead of creating a new connection is pretty high.

Question here - what is a good way to make this long standing connection happen? Eg, if you use python urllib3 and nginx - can you keep these connections alive enough (with pings or whatever) that your latency is lower than bundling that service within the code itself as a library?
The right should follow the intent, as evidenced by the photograph itself. If the evident intent is to document a public space, than you should have absolute right. But if the intent is to reproduce one particular building or sculpture, or broadcast (in your example), then the authors should have some rights. Though, I thing that any sculpture placed on public property should be in public domain, after all, the public has paid for it, right?
Sure, it's possible/reasonable to do both. I work with asynchronous Microservices using RabbitMQ where PubSub shines in that many services can respond when the application publishes a message (1 service for email, 1 for push notifications, 1 for capturing data for analytics, etc). But it is fire and forget as far as the application is concerned.

Compare that to synchronous services where the application has be aware of all of them and coordinate calling them all. It is easier to use synchronous when the application requires an output from the service to respond.

Transactions across services are certainly not easy:

"Distributed transactions are notoriously difficult to implement and and as a consequence microservice architectures emphasize transactionless coordination between services, with explicit recognition that consistency may only be eventual consistency and problems are dealt with by compensating operations." [1]

[1] http://martinfowler.com/articles/microservices.html
Nobody really knows how they've done it.

But in order for markets to be efficient there needs to be lots of constant arbitrage, and anyone who pulls off an arbitrage trade makes a profit. So maybe the Medallion fund just does a lot of the arbitrage that makes markets so efficient.
http://www.heraldnet.com/article/20111118/NEWS01/711189872 makes it look like they do.

As kevhito says (but (s)he forgot to include the URL), it is more like a train running on a cog railway, with the train fixed and the rail moving.
As a user receiving advice from your robo advisors, what guarantees do you provide that the advice I receive is sound and that following the advice will result in my retirement goals being met?
Ask HN: Masters in Data Science Worth It?
I've been seeing a lot of different ads recently about different Masters in Data Science programs (MIDS), most notably for UC - Berkeley and SMU.

I did find a few older threads in regards to the field itself, and then one from a year ago with a lot of good comments on it [0]. The general consensus seemed to be that a masters does carry some weight but for $60k, that's too steep. With SMU's price tag at $53k, it's not much different.

Some of the arguments for a MIDS is it gives exposure and experience that online courses could not give. While you might learn the same knowledge, the MIDS gives additional experience and overall better mastery of the material.

I'm wondering if there are jobs out there that can justify the $50-$60k price tag, or if an online certificate like the one on Coursera from John Hopkins [1] would be sufficient to a) land a job, and b) give me the experience needed (maybe with using kaggle along the way)?

Thanks

[0] - https://news.ycombinator.com/item?id=8209062
[1] - https://www.coursera.org/specialization/jhudatascience/1

*edit - grammar
> If the Congress passed a law saying "the IRS can set tax code as it sees fit"

Then this would be an unconstitutional delegation of legislative authority to the executive. [0] Rendering the consideration of whether any executive action under it would constitute an ex post facto law moot -- if Congress purports to delegate enough power to the executive that retroactive executive action under it would be an ex post facto law, than the whole scheme is an unconstitutional delegation of legislative power whether or not it is applied retroactively.

Heck, even though retroactive taxation isn't generally ex post facto law (which is retroactive criminalization or enhancement of criminal penalties), the law you propose would be an unconstitutional delegation.

> If this is the current understanding of what is allowed

Its not, its just the prohibition that prevents it has nothing to do with (and is much broader than) the ex post facto law prohibition.

[0] See, e.g., https://en.wikipedia.org/wiki/Nondelegation_doctrine#United_...
> but as long as the capita is still growing there will still be more and more cars on the road.

As long as those drivers can afford the tax burden to maintain the aging infrastructure, sure.
> Headed in a different direction, Van Deventer has a new type of gear he calls “grinder gears” that comprise an inner gear with one fewer tooth than the outer gear, causing it to wobble its way through the rotation. For the engineers, it’s a variation of a cycloidal drive.

Oh, he reinvented a Gerotor.

> A gerotor unit consists of an inner and outer rotor. The inner rotor has N teeth, and the outer rotor has N+1 teeth. The inner rotor is located off-center and both rotors rotate.
https://en.m.wikipedia.org/wiki/Gerotor
Survivorship bias. The funds that do not have great records are eventually closed leaving only the ones that are successful
How to Start a Growth Team
Actually the Medallion fund is only about $6 billion I believe. The rest of the money is managed in funds which are open to non-employees (and those ones don't make anything close to 35% annualised returns).
A Realistic HackerRank Developer Interview Question List
Reading your comment I initially assumed {i, j} were iterators, in which case they would be fine by me. Nope.
Once you have fixed an evaluation strategy, you can talk about time complexity just fine. And, with a substructural type system, you can also talk about space complexity just fine.

So it's not abstraction vs. algorithms. The lambda calculus gives you both.
Wish this had more data than anecdotes.
One other wibble: the 35% isn't the average, but rather the smallest annual return.
OpenVPN already updated: http://article.gmane.org/gmane.network.openvpn.devel/9900
Do I understand correctly that the load-time code specialization described in this presentation is not inherent to the Mill hardware, but instead merely a proposed OS-level mechanism for supporting binaries that are portable across the model family? Could a Mill-targeting compiler choose to bypass this mechanism and directly output model-specific concrete code?
I don't know much about the market, and know even less about actual investing strategy-ish stuff, but what does the loss look like five years later?

I guess what I mean is, for an "index fund", crashes don't seem to be... permanent?

Perhaps that's small comfort for someone who's set to retire the month after one of these 30% crashes, but I guess that's what the whole "invest more conservatively as you get older" thing is supposed to help with?
The Latest Flash 0-day is no Joke
Quick question: How long do you see yourselves operating Captain401?

The photos on the website make you guys look pretty young and if I were an employer I'd be nervous that --like many start-ups-- one day out of the blue I'd get an email saying Captain401 is closing. Not that youth means the start-up is doomed, just that you may want to move on to try something else. I'm sure your plans can roll over easy enough, but that just means I'll have to deal with Fidelity/Vanguard/etc anyway.
Thanks for the stat. Expanding access to 401ks is definitely a goal of ours.
I think the most interesting part is not the tax, but this:

The options also were attractive because they limited the risk of loss to the amount paid for each option, Renaissance said.
“No other investment structure of which we are aware provides both high leverage and loss protection,” Renaissance said.