skysight-inc/HackerNews huggingface dataset:
"Conventional knee and hip implants have to be replaced after about 10 years due to wear and tear."

this is really amazing to me! you put metallic, designed-to-last object inside an organic blend of tissue and bone and human activity and in 10 years its worn out. So much opportunity in the area!

Along the same lines, interesting how delicate our bodies are in the short term but rather durable in the long term.
Rust Performance: A story featuring perf and flamegraph on Linux
The excavation of the Malta near the Missouri River east of Kansas City started this spring. The exploration group has a blog [0], but it hasn't been updated since March. A newspaper article from April has more details [1].

The Arabia museum really is surprisingly interesting, serving not just as a time-capsule of the frontier period, but also revealing a lot about what it was like to embark on a westward journey across the continent before the railroads were completed.

(The two most-traveled trails of settlement, the Oregon and California trails, as well as the busiest overland mercantile route, the Santa Fe trail, all began in and around Kansas City, where the Missouri River turns to the north, and is consequently as far west as you could get by steamboat. Passengers and goods disembarked there before provisioning wagon trains for the overland journey, and most of the Arabia's goods were intended for sale to would-be settlers of the American west coast.)

If you're ever in KC, check it out. And if you haven't had your fill of history museums, hop on the streetcar line down to the Liberty Memorial and National World War I Museum [3], which is the best in the country on that subject and will host the national centennial commemorations over the next few years.

0. http://www.moexplorer.com

1. http://www.columbiamissourian.com/news/local/the-steamboat-m...

3. https://www.theworldwar.org
Your own body basically goes through a skeleton every 7 years, although it's a gradual procedure of course. Your bones are constantly being eaten away, and replaced as part of their maintenance. It's truly amazing, but the secret is definitely, "We can rebuild it" not "Unbreakable".
Interestingly, the environment around each gold atom in the beta phase is an icosahedron of titanium atoms (Fig 2B).
The true revolution has hit public consciousness yet and that is the rise of electric bicycles. I own one and nearly every time I ride it cross town I think again that it's nearly the perfect form of human transportation. It is said that pedal bicycles are the most efficient form of human transportation. With a motor and a lithium ion battery that charges up at a rate of 150W for 3 hours and then delivers 12-15 miles of transport at 20 mph, depending on much pedaling is done to assist uphill, and I imagine that you only increase that efficiency. Electric bikes are allowed to use the bike lanes in California, while fossil fuel powered motors are not, so bikes can take routes that beat all the car and truck traffic. I don't break a sweat riding an electric bike so I don't need to take a shower when arriving at work. Take the optimistic tone of this article and add electricity and you really have a revolution.
Our World in Data: What Men and Women Want in Marriage
Cray Advance Cluster Engine EMS ( http://www.cray.com/products/computing/cs-series?tab=cs_seri... ). Formerly Appro Cluster Engine.

Complete control and monitoring of cluster with either a CLI or GUI. Scalable monitoring with negligible impact on running workloads, including global synchronization of metric collection times, to minimize jitter. Ganglia front-end, but without the overhead of gmond/gmetric running on nodes. Validated as scaling well on a 8,000 node cluster.

Full disclosure: I designed and implemented the monitoring system.
The belief is "yes" but research on the topic is new and unfinished. Dr. D'Agostino specializes in ketogenic nutrition, and discusses exogenous ketones for exactly that purpose in two podcasts[1][2].

http://fourhourworkweek.com/2015/11/03/dominic-dagostino/
http://fourhourworkweek.com/2016/07/06/dom-dagostino-part-2/
It turns out that the whole notion of a 'reference count' that tracks the exact number of handles is unnecessarily powerful. If you weaken the guarantee to two states - 0 or greater than 0, you can do even better. See SNZI (scalable non-zero indicators): http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.83....
> Don't do that. No one is allowed to ssh to boxes. If you need to enforce it by blowing up and rebuilding all servers once per week, do that.

I'd love to do that. I'd love to have no access to production servers, but ultimately that requires far more work to get right than Ansible configuring the same machines again and again. It also means you can't use dedicated hardware as easily, which restricts performance. It's a great situation to be in, but difficult to get to and requires a non-trivial amount of overhead.

At my place of work we deploy somewhere between 5 and 40 times on any given work day (on a team of 5 engineers). That's because we've managed to engineer a reliable and fast deployment process, but that took a long time to get right. It's powerful, but the overhead, particularly on a small team who are under pressure in a startup environment, can be quite large.

I'm not saying you're wrong, in terms of best practice I completely agree, but when the tradeoff is between sales/acquisition/product market fit/etc, and having a 'smooth' devops process, in many cases, the latter must come second.
Here you go https://en.wikipedia.org/wiki/Operations_research. Go to town. The history section and the problems addressed section is more than sufficient. You can expand further if necessary and decide for yourself whether what Uber does is in any way novel and whether it requires all the bloat.
i'm curious... what was her reaction when you recovered the data?
Start here to learn R
A Chat with David Heinemeier Hanssen
Bodybuilders aren't really reflective of how humans work. While cutting they're usually on test/tren + t3/clen/dnp and may still be using gh/insulin timed around their meals. And, working out multiple times a day, then playing with their carb/sodium intakes.

It's probably healthier to be morbidly obese than what a pro bb will put their body through.
NoSQL DBs usually target distributed environments.

So... enter CAP theorem. There's no free lunch. People think we can simply throw away half a century's worth of science because JSON and schemaless are teh awesome derp derp.

Implementation is surely an issue, if you take into account that the mongodb guys had to acquire another company [1] in order to overcome their abysmal write performance. And yet there were people, and benchmarks that were trying to tell us that mongo was faster than RDBMS alternatives. All this circa 2009-2012.

You know what's faster than everything? Writing to /dev/null ;)

Anyways, depending on your use case there might be a NoSQL out there that might fill your needs and it might actually deliver what it claims it can deliver. But it's hard to sift through all this ad-driven, buzzword-ridden informacials that gets thrown around by start-up companies in the DB domain.

Also, DBs are like filesystems; even if the match/science is correct, it needs at least a decade of proven track record before you can say that it works as advertised.

[1] http://www.informationweek.com/software/information-manageme...
http://docs.spring.io/spring-batch/trunk/reference/html/spri...

http://stackoverflow.com/questions/11507133/increasing-stack...

http://www.rio-project.org/tutorial/service/service-intro.ht...

http://jrds.fr/

https://camel.apache.org/

https://camel.apache.org/redis.html
Why Geographic Clusters Are Impossible to Prove
Can you recommend a good one? ... I hardly have time to
write code to learn it like people say is necessary.

The _easiest_ way to learn monads is through code (in haskell they're just a tricky typeclass: http://dev.stephendiehl.com/hask/#eightfold-path-to-monad-sa...) If you don't want to write code you could learn them like a mathematician from first principles (https://en.wikipedia.org/wiki/Monad_(category_theory)), but that seems so much harder to me I'm not sure why you would.
Doesn't matter how they change it. As long as the app works, there's absolutely nothing they can do to stop someone from using the "API".
Does this mean that plastic is very tough and hard?

Edit: Sorry, not plastic. I meant rubber.
Since it looks like you might be the author, the project might make a good "Show HN".
You claimed no one talks about it on GDC. So which one is it? No one, or some do? Just admit your statement was false.

And surely you don't expect MS and its cahoots to talk about lock-in. They are pushing it to mess up everyone else, so they aren't going to bring this crooked practice into the spotlight.
It's not just philosophical -- there are examples of practical situations where there is a true model (especially in more traditional applications of statistics):

- Polling for presidential election: The "true model" is the voting preferences of all 300 million Americans. A (uniformly) random sample of N Americans can be used to estimate the true model roughly with standard error 1/sqrt(N).

- Particle physics: The "true model" is the decay probabilities of various particles as computed by quantum mechanics. Different models (and parameters) yield different decay probabilities, and experiments can be used to choose between models and/or estimate model parameters.

Of course, oftentimes the true model is philosophical as you describe.
No One Really Wants a Whistle Blower: Russia, the IOC, and Doping
Google Play store improvements foccused on size
I'm not sure any problem needs a solution that requires concurrent modifications to the state of an identity, though. Can you think of any such?

(Rust seems to be making the same bet.)
In that case I'm surprised the judges are permitted to ask this sort of question in public, it creates a warrant canary.
I read this and was struck by this paragraph:

According to an inventory Duke Energy filed with the Environmental Protection Agency (EPA) for 2010, the [Coal power] plant released more than 800,000 pounds of toxic pollutants into the air, as well as 32,000 pounds of arsenic, 7,333 pounds of chromium, 4,000 pounds of cobalt and other toxic heavy metals into the pond, all of which residents worry is seeping into the groundwater. This is especially significant in Belews Creek, where many locals rely on wells for their drinking water.

And think, this is the preferable to nuclear power? Of course it isn't, but people don't often get thrown in their face just how damaging coal fired plants are to their environment when properly operated!
Surely this can't be the firs time someone thinks of making a gold titanium alloy. What did the previous attempts miss?
Or you can earn $150k a year, put the excess into savings, and retire N years earlier. Which is part of the reason I find the "once you hit $75k a year money doesn't make you happy" arguments meaningless. Please, anyone with too much income, shoot me an email.
If history is so certain, there is something called the NYSE and there are many people happy to take the opposite side that bet.

Here is how I would play it: if there is global upheaval, the US will still come out ahead, and yields on all duration treasury bonds will plunge to zero, so one can make money regardless of the outcome by going long America (S&P 500) and shorting Europe and emerging markets, while also going 'long' treasuries. Even if there is peace (which I think is still the mostly likely outcome) the S&P 500 should still outperform Europe (which is weakened by Brexit), and treasuries should do well too.
I live in London (UK), cycling is fairly popular here but I'm terrified of being killed so don't bother with it.

I'm wondering how the US approaches bicycle safety as a whole, it's all well and good building a cycle lane, but in some places that's not feasible so you have to merge with traffic. How do US drivers treat cyclists?
> The TLDR is that money has diminishing value after a point (around 75k for regular cost of living area last I looked)

I don't think it is that simple. A job is also a very strong social marker. Some people wouldn't be happy with a job that doesn't provide them with the social status they think they deserve or that is expected from them. Social pressure or ambitions can be powerful forces!
Bitcoin is useful
Instead of posting comments about how bad the comments are, it's better to flag the egregious ones.

To flag a comment, click on its timestamp to go to its page, then click 'flag' at the top. (There's a small karma threshold, currently 30, before flag links appear.)
Again, should they not be able to do that before using the customers as guinea pigs? You'd think that they'd have a large buffer of "untainted" IP's that they slowly cycle towards. I.e. they "slowly" warm them up with legitimate emails of their own, and then have them on hand for when they need to replace existing IPs for customers.
https://news.ycombinator.com/item?id=11569726
The question is, do you want to defy the court system if it's bringing down the force of law on you? And spend the rest of your life trying to avoid/evade the consequences? Courts don't forget.

It seems like it'd be easy to say "hur hur I'll tell the court to piss off, move to a country with no extradition, and live it up there," but really? That's your plan? That's the advice to give to people, "use bitcoin, if you get busted just skive off to somewhere with no extradition"?

Certainly it's doable, but is that the life you want, or want to encourage others to seek?
I prefer the [Web Platform Incubator Community Group forums](https://discourse.wicg.io/) - doing this via Discourse lets people reply directly to the bad ideas, letting them sink to the bottom, unlike this page where they appear to be front-loaded.
See also : Marcin Jakubowski on Open Source Blueprints for civilization : https://www.ted.com/talks/marcin_jakubowski?language=en

..and the construction set: http://opensourceecology.org/gvcs/
If you want to generate vectors uniformly on a n-dimensional unit sphere, generate them as i.i.d vectors of n standard normal variates and renormalize.

x = np.random.randn(300)
x /= np.sqrt(np.sum(x*x))

To see why consider that the joint pdf depends solely on the vector's distance from the origin.
JavaScript lends itself really well to functional programming, no?
Seconded! The Arabia museum is incredibly fascinating and interesting to anyone remotely interested in learning, or history. It's an incredibly rare and accurate view into the world at that time. Really fascinating. The wife and I have been there several times.
That being said, I think we need to divorce the common core from the testing standards.

I think we need to divorce the metric system from ways of making standardized length measurements.

Instead, I think people in washington should measure distance in rods, in virginia they should measure in yards, in NY feet should be used, and we should never ensure a way of converting rods to feet.

The entire purpose of the common core is to define a uniform set of standards. Without this, we have no way of even measuring the fact that students in school X are performing badly relative to students in school Y. (This is, of course, exactly what Diane Ravitch wants.)
Gonna need a link for that. Here's one:
http://www.quackwatch.com/01QuackeryRelatedTopics/mercury.ht...
The title is "One week, no food". I don't see how that contributes to the problem.
Fighting the false consesus bias
Change the license of Open Watcom
I don't miss anything about VHS. Balky machines, smeary, fuzzy, cropped video, the top of the image bending to the right because of a weak sync signal, rewinding, large storage volume, taking cassettes apart to fix them, cleaning the heads, taking the VCRs apart to fix them, etc.
>What mattered is the parents of the poor school worked 2 jobs and had no time for the kids. The parents of the rich kids had stay at home moms and tutors.

Or single-parent vs. two-parent households. Controlling for everything else, that fact seems to be the biggest culprit in the future success of a child. Working two jobs is a symptom of a single-parent household
You can get 12kW/18kW with ballast for cool ~$40k https://www.arri.com/lighting/m_series/products/arrimax_1812... Arri had, and Mole Richardson still has a 24kW version too. Here's an 18K burning insects: https://www.youtube.com/watch?v=74ub_bysnl0

Passing by one (a few meters away) feels like you could (and you probably could) grill a chicken in-front of it.
Honestly I want both. The mathematical expressions, and an implementation in any language. I never took math in university and am woefully deficient. But the past few years proved to me that I'm 100% capable of learning the concepts.

I just really sorely need examples in a syntax I understand.
I don't understand why so many people use their cars for every chore in the Bay Area. A decent bike commuter can do 16 mph which is plenty fast for most trips. It's also 'free' in that you burn lunch instead of fuel.
What is your better solution ? Instead of being derogatory about a technology which works how about creating your ideal and seeing if the Internet likes it ?
i use the curl and rsync man pages weekly, if not daily for a stretch, and they're great.
How has that been going by the way? I've been following OSE since 2010 and I've lately been given the impression that it has been dying down.
> NoSQL DBs usually target distributed environments. So... enter CAP theorem.

Surely FB is not running MYSQL on a single machine. Perhaps i am misunderstanding what you are saying but saying SQL db's dont face the issues of distribution seems a little strange.

Distribution comes into picture from shape and size of the data not data saving/retrieval techniques. yea?
Google Will Use Machine Learning to Bring Comic Books to Life
I upvoted you for upvoting it, because I agree with you :)
>How do US drivers treat cyclists?

Not well in my experience. Cyclists dying from accidents is unfortunately more common than it should be. Perception is changing and trending in the right direction, but the attitude that roads are meant for cars and not cyclists is too prevalent.

That being said there are a lot of cyclists who don't obey traffic laws and bike dangerously as well.

It will improve in time as cycling becomes more common and more people do it.
The line from the speech was just an example that underlined how little staffing Trump has.

I think it is pretty widely recognized that his staff isn't experienced, and there are very few of them compared to a usual campaign. If you don't agree, I understand that we are talking partisan politics, so I'm unlikely to convince you.

Perhaps consider listening to some political wonk podcasts and you hear how amazed they are at how the convention was run. Things like calling Fox during one of his speaker's speeches, not knowing what multiple speakers were saying, and the whole thing with the VP rollout: http://www.vox.com/2016/7/15/12199676/trump-vp-pence-rollout

Mitt Romney's convention was nothing like this, nor was any other convention from either side of politics.

It isn't really surprising - he isn't exactly from the core of the Republican party, so he hasn't been able to rely on people just doing what they always do. That's a quite reasonable explanation, but it doesn't deny the facts of his disorganized campaign.

Now it may well work out fine - a lot of things that people thought were important are tuning out not to be.
An interesting tangential argument I had with a colleague recently was how to actually calculate R^2 when testing model predictions on new data (emphasis on new data).

He claimed the conventional way is as the square of the correlation coefficient of the two lists of data, whereas I was suggesting 1 - SSE/SST in accord with references I read (well, Wikipedia), which latter method yields lower values for his data. I know they are equal on training data when using linear regression with constant term, but generally they differ. Correlation way being scale and shift invariant to me disqualifies it as a measure for predicting new data.

Unfortunately he was able to barrage me with many online references that just say that "R^2 is the square of the correlation coefficient", which without very careful reading of the context (fitting not predicting), and sometimes even with such careful reading, makes his interpretation look correct. I find the whole thing rather exasperating...

It also occurs to me that just as a question of convention, that I may be wrong which wouldn't surprise me as I'm new to modeling.

So: Do most modelers report correlation^2 as their R^2 values for holdout tests? I wonder have other modelers here encountered this confusion?
Machine Learning: An Introduction by Andrew Ng
This guy has no clue about how it works. Only aware of all the hype around it and presenting the hype as facts.

Does he understand about the blockchain size and the need to replicate it in every singe node? Does he understand why a blockchain can't be a database? or even an app platform?
Doesnt need any of these things for it has:
1. Huge loyal fan base built up since 90s
2. People post their Pokemon Go experiences naturally on FB/ Snapchat/ Twitch due to the visual nature of the content (i.e. Pokemon are cool looking when imposed on real world things)
3. When you see people walking weird with their phones out you automatically know its Pokemon Go. Great constant real world promotion
Please don't post uncivil and/or unsubstantive comments to Hacker News.

We detached this comment from https://news.ycombinator.com/item?id=12151921 and marked it off-topic.
Yahoo reportedly will be acquired by Verizon in $4.8B deal
I also liked this explanation of the Typicality assumption

http://scientifica.wikia.com/wiki/The_Typicality_Assumption
So much for wolverine's longevity.
Recipe:

Create a global Cassandra cluster with regional datacenters.

Use one keyspace per region

Use per-keyspace replication to only replicate that region's data locally, and to one or more additional datacenters

Have stateless app servers colocated with Cassandra in each DC handling all local traffic

Run spark on top of Cassandra to do analytics, or to do the etl to a dedicated analytics system

Optionally have a single "master" DC, with replicas of all data from all locations, that doesn't serve end user traffic, but is to allow efficient cross region analytics.

Profit (optional step)

And yes, the company I work for (Datastax) has a product and services to help make it simple.
Your mistake is in thinking that most developers have gone through CS, I do like to wager that we have more developers today without a CS background than those with a CS background. Therefore, things like these are new to them. I actually think that Javascript is a great way to teach these concepts because those developers without CS backgrounds are less likely to be writing lisp or haskell code, and more likely to know Javascript.
I've been around long enough to see many waves of reform run through the schools, followed by ridicule and abandonment.
Moore's Law Is About to Be Reborn
Yes man pages are usually upside-down; the examples should be right at the start and then lead to a drill-down into options. 9/10 times I end-up having to search the web for a basic introductory example.

But even in big corps corps with ISO9000 accreditation there is seldom self- questioning as to whether documentation is useful rather than just ticking the box for process-completeness.
Systemd breaks Screen, tmux, nohup
Note how each of your last three comments contains some kind of personal insult. Is it really that hard to disagree without resorting to personal attacks?
we are doing it in our PokeTalk.im (unreleased yet)
Something Is Causing Siberia's Tundra to Literally Bubble Underground
Meet John Hanke, the visionary who runs the firm behind Pokémon Go
>I imagine thats something like trying to learn Chinese using the roman alphabet.

So basically, completely normal and reasonable? (see http://languagelog.ldc.upenn.edu/nll/?p=10554)