skysight-inc/HackerNews huggingface dataset:
I agree it's still fun.

Kalman filters work by the assumption that everything is distributed by a gaussian. However the given example shows a case where we have very non-gaussian distributions, namely the input to the system is estimates of the distance of the lawn mower to the towers, which means it's a sort of annular distribution with a big whole in the middle (these are shown in the visualization). Contrast this to a gaussian which is a solid blob: a gaussian would be a poor approximation to the information provided by a distance to a point.

But without the assumption that the distribution is gaussian, the math is intractable, in particular how do you even represent an arbitrary probability distribution over possible positions? One option is to discretize space and give a 'heat map' of probabilities. This works but limits spatial resolution and grows to be a huge amount of work and memory for higher dimensional state spaces(1). The small dots are the alternative approach and are the eponymous 'particles'. Here we estimate the probability distribution by a collection of possible states, each being one point, and each state is weighted by how probable it is. Then a new piece of information applied (another round of distance data from the three points) to each of those points. This updates the probability of each point being 'correct'. Then a new batch of points is randomly selected by adding some noise to the current batch and preferentially choosing the higher probability points. This is why they jump around at each time step.

The advantage here is that most possible states are ridiculously unlikely but particles tend to group around the likely points, so we spend our time looking near the likely places and not around the unlikely places. If you discretized space, the vast bulk of the space will just be epsilon probability and doing you no good. And the particles have arbitrary precision without needing to increase the amount of points used. Plus we can work with non gaussian distributions. Otherwise it's 'just' another way of approximating a Bayesian update but under different assumptions and tradeoffs compared to a kalman filter. If you've got nearly gaussian distributions kalman filters are simpler and faster and more memory efficient, so they're very popular for embedded systems.

(1) Actually we're probably dealing with a 4 dimensional state space already making a discretized approach essentially already impossible. There are two space dimensions plus two for the velocity of the mower.
It works fine with Chrome. I opened it with Tor and briefly saw the page, then it went blank.
It’s time to bring context back to the web
In theory, yes.

In practice, though, postmodernism (taken as a whole) most definitely has an ideology. So did logical positivism.

And even more in practice, if you go to a university to study philosophy, the philosophy department at your university will definitely have an ideological bias.
There's also lots of people on the internet giving advice to the President. Maybe giving unsolicited advice is a thing people do on the internet.
They've done similar things along with other tricks, like changing the layout of the room when your back is turned to simulate large spaces in small rooms.

http://www.wired.com/2015/08/cant-walk-straight-lineand-that...
Graduate students are effectively required to replicate studies already. They just don't get any credit for the work when it turns out that the flashy paper didn't replicate, and the journal editors hate to look foolish, so it's exceedingly rare for failures to replicate to see a journal. So the next graduate student to work on the technique also gets to waste months or years on it.

Really a splendid system, isn't it? Sometimes (rarely) I sympathize with industry types who want grant claw-back processes. Then I remember that those are the same crooks that pushed Vioxx and 510k "equivalent" medical devices. And the sympathy evaporates, because they're even worse.
Do you have any thoughts on encfs vs. duplicity? http://duplicity.nongnu.org/
We are just getting started and most of this is still in the design phase. Technology choices will have to be made.

The two most concrete things right now related to Context Graph are probably Activity Stream and the Fathom project. Fathom is an experimental framework to extract meaning from web pages ad can be used for a wide range of applications.

Production builds of Activity Stream can installed via TestPilot.

https://github.com/mozilla/activity-stream
https://github.com/mozilla/fathom
https://testpilot.firefox.com
Not necessarily, but it does make your opinion an unpopular one. I'm curious quite what you feel you're getting in exchange for all the effort you've put into advancing it.
the article is too old. Web Audio API is mature platform now in 2016. See http://molgav.nn.ru/rtfm/index.html for example. Molgav uses hundreds of instruments from guitar to piano, library of thousans of songs, it works on desktop and mobile.
One last tool for your moving ahead - preparation.
That is Excel team's choice, of course. However, I would have thought that it would be based on the usefulness of the given import type currently, not in 1988 (I trust there have been new import filters since)

How many SYLK files did you see recently, e.g. within the last 30 years? For me, the result is 0 (zero). As compared to innumerable swarms of CSVs of all flavors. Yet even MSO2013 prefers Yonder Hiftorical Curioufity; whence Excel's fondness and preference for obscure and rare formats, I have no idea.

And yes, giving user at least an intelligible error message would be nice (I hold no illusions that popping up a selection would be a complex feat: import logic is usually a gnarly place).
Just use wordpress + mailchimp. It would take about 1-3 hours to setup the MVP :-)
There seems to be a lot of negativity in this thread. So, I'll attempt to provide a positive spin.

I think of this (and other open source hardware and software projects) similar to how I think of mathematic theorems or tools at Home Depot. These are good building blocks to learn, prototype and build. If you want to take it commercial, then you have to bear licensing costs etc. but it is a great way for hobbyists to build things on top of these blocks rather than start from scratch.
>There are hundreds of web technologies, each with their own spec. None of which are actually that complicated if you read them

The first part is true. There are indeed hundreds of web technologies. The second is absolutely false. A lot of them are (and have historically been) horribly complicated to implement, with lots of edge cases and strange interactions.
In fact prominent web standards people have talked about such cases many times.

>So you mean CSS? What does that have to do with security?

No, he means "simpler primitives" across the board. And even CSS has to do with security (e.g. loading third party fonts, etc).

>>Designing the web for average users
>Not sure what you're trying to say.

He's obviously tries to say that W3C et al piled features to please end users and satisfy end user needs, without giving much care about how to make them more consistent and coherent for web developers.
I believe this is what https://addons.mozilla.org/en-US/firefox/addon/googlesharing... does.
will do, thanks for the offer!
On the cycle front, we've hit the end of ad-supported startups. Google and Facebook now get most ad revenue. I mentioned previously that only two of YC's current crop are ad-supported.

Incidentally, we passed "peak Twitter" some time ago. Look at TWTR stock. We may have passed "peak social".

We've hit the end of "apps". There's an app for everything, and most of them are losing money now.

We ought to be hitting the end of "online retail is 'tech' and deserving of high multiples".

So what's next?

There's a lot of stuff in the pipeline that's promising, but hard to do. AI. Robots. Automatic driving. Automatic driving is close, unless someone screws up big-time. AI is going to chew up a lot of desk jobs over the next decade.

Robots are still hard, but we're now hearing about larger robot deployments than ever before. Amazon has 30,000 robots. Foxconn is installing 60,000. We've never seen single customer numbers like that before in robotics.

Vision processing will be big. Lots of semi-intelligent systems will be looking at video and making decisions. From store inventory to crime detection, there's a role for intelligent video processing.

VR? Probably not. VR looks to be the next 3D TV. It's just too much of a hassle to go mainstream.
Snapchat introduces Memories: a searchable, shareable archive of your snaps
exactly what i needed.
> Since that time, however, over half of all bids have come
from this group, including applications by Istanbul, Bangkok, Havana, Doha, and
Cape Town, as well as the successful bids from Beijing and Rio de Janiero

Well, it's a good thing Istanbul didn't get it... that would have been a security disaster given recent events.

> The true final cost of the 1998 Nagano Winter Olympics will never be known, because the host committee ordered a portion of the event’s financial records to be burned (Jordan and Sullivan 1999).

What rational reason could there be to do this? Unless it's to hide something.

> From 1968 to 2012, every single Olympic Games ended up costing more than originally estimated. The median Games were 150 percent over the original budget, with the worst offenders—Montreal 1976 and Sarajevo 1984—exceeding initial estimates by more than ten-fold (Flyvbjerg and Stewart 2012).

I'm curious if estimates get adjusted for this reason (to be higher) that they still end up exceeding the new estimates. It might be best to low-ball the estimate but have good contingency plans that aren't made public.

One thing I've learned from making more money over the years is that financial budgets have a way of becoming self-realizing, always growing to fill capacity. It takes quite a bit of constraint and learning to address this - something these Olympic host countries don't have the ability to do, as they are always hosting it for the first time. They have no local experience to draw from.
That's been my thoughts. Jupyter is ok but the interface really has stagnated, which is peculiar because it's not that complex of a front end. Though Escher is promising it's not production ready/quality for my tastes (which is getting better in the Julia world but definitely still an ongoing need to address).
> Given that the article is titled "Later Stage Advice" and it says things such as switch from not caring at all about marketing to caring about it a little bit once the product is working I think Sam's advice is properly qualified.

There are probably less than 20 YC companies that have reached the point where this advice is valid. Zenefits, Airbnb, Dropbox, Stripe etc.

The others never needed this advice. The nightmare scenario for employees is getting stuck at a company without true product/market fit that just sort of has it, then watching the founders justify following this advice because they have raised enough money to get to 30 employees without ever having true product/market fit.

> The cases where a company is so compelling and viral that there is a clear path to scaling are the exception.

IMO, this advice should only apply to the exceptional companies.

> For every Instagram there are probably 1000 companies that are still considered successful by their founders but at a smaller scale or slower pace. Startups are hard.

Those companies should stay small with no formal management structure and most should not follow the advice in the post, even if they have scaled.

I think the OP's point is that product/market fit is overlooked so often by founders and teams. No matter what, it should always be the true focus of the business. The number of companies that need the advice in this post is so small that YC should just write it as a personal email to founders.
Just family home videos for me ;)
I've come to the same conclusion: VR belongs in an arcade. The tough part is coming up with a game worthy of a VR arcade... Batman Beyond-style.
> I believe that if the professor presented only the pro-Marx side of the story this is just fine, after all, this is America, everyone knows the other side of the story.

That's probably true.

> For the professor to present the arguments anti-Marx in his class would in fact be just the opposite: capitalist indoctrination, where you would be lead to believe that Marx was really wrong and capitalism is the only "correct" system.

Also probably true.

The problem, though, is that the professor is only presenting the Marx side, while claiming to teach critical thinking. That's not critical thinking! Critical thinking means criticizing both sides.

Now, if the professor wanted to teach the Marx side "as a balance to what everybody else says", that's OK too. The problem is the one-side-only combined with the claim of "critical thinking".
Mind sending me details? I can be reached at tarrant@twitch.tv. Information that can help are things like who your ISP is, what your specific IP is, where you are located. Possibly a traceroute to live.twitch.tv.

We really do care about the QOS of users and are constantly working to improve service to users everywhere in the world. Sadly there are many constraints out side of our control that can cause bad service. The information our users are kind enough to provide to us can often help us identify problems and reduce issues.
Replace booleans with two-cased enumerations
To reply your first paragraph, Dropbox is providing multi-region durability for free compared to S3. Point to Dropbox.

I agree with your second paragraph in entirety.
What HotSpot are you talking about? I assume you aren't talking about the Serial, or the Parallel GC or about CMS, which are the older generation, but about G1, right?

Well, I have extensive experience with tuning G1. G1 is a good GC, capable of low latency incremental pauses.

The problem is that with a stressed process, at some point G1 still falls back to a full freeze-the-world mark-and-sweep. For 50 GB I've seen the pause last for over 2 minutes !!!
Most companies that survive to become late stage, raising several and increasingly large multi-million dollar rounds, have found product market fit. Not all, but most.

In B2C, this is true almost by definition. So I think Sam's comments are appropriate. He is limiting the scope of his advice to growth-stage companies that found their fit. Obviously, that's a problem that one revisits. But on the rare occasion that you solve for product market fit, you need to tackle other problems like the ones he describes.
Maybe first one could install a bright light, controlled by a motion detector? There are lots of nooks in a city that can be pissed upon in the relative privacy of darkness. If that doesn't do the trick, then a camera could be used, if a sign were posted notifying the public of that use.
Absolutely! At least in the States, we have this stereotype beaten into our heads that vocational jobs are not desirable. Even when we can look around and see that -- especially in places like the midwest -- the people with an enormous mansion home and a nice boat are usually the general contractors running a business, which itself pays the welder a hundred dollars an hour.
next message in thread is saying that it hasn't been announced yet:
http://lists.freepascal.org/fpc-pascal/2016-June/048216.html
They mean in the USA, it's based on a misintepretation of the graph below the quoted phrase, or on poor wording on their part.

The graph says there are as many vision-impaired American internet users as there Canadian internet users - not the entire population - around 20-25 millions (the graph is hard to read). I'm sceptical of that number because it suggests ~10% of the USA is vision impaired, seems too high.

Anyway the only reason I care is that I'm Canadian ;)
Let's hope the author doesn't ever go into an MRI... could be ugly!
500 Lines or Less Release on July 12th, 2016
A better title would be: "Codename Chilbom - An Investigation of the Assassination of Orlando Letelier in Washington, DC"
They got, but many systems that produced them didn't have such a thing as a filename extension. Microsoft Multiplan, for example, ran on Commodore 64, CP/M, TRS-80, etc. (https://en.m.wikipedia.org/wiki/Multiplan)

And even if they did, chances were that transporting the file between machines (no, you couldn't move a floppy disk between machines, even if both machines had a floppy disk. Typical transport involved sending data over a serial line that only guaranteed to transfer 7 bits/byte, another reason why SYLK is ASCII) lost the extension.
Computer Hardware Orchestra
Java Back-end Developer | VENA | Full-time | TORONTO, CA

Who are we? Check out the awesome work we’re up to at: https://engineering.vena.io

You will be responsible for building the backbone for the Vena platform, building REST web services with a very modern Java 8 backend stack.
We’re seeking innovative, analytical software engineers with an aptitude for big data, machine learning and server-side development who love to be continually challenged to create scalable and performant code. You will work with a team of passionate, talented software engineers who love solving hard problems to build highly scalable web services, real-time systems, resilient services and so much more.

We can’t wait to hear from you! Apply at: http://bit.ly/29hId33
...by merging it with a bot that quotes a random sentence from any comment with "killer" and "app" in it, asks for free work from humans by saying, "How so?" (AKA nerd sniping) and submitting the results to a startup incubator automatically.
There was a similar sentence in Brazilian Portuguese. Something about our largest TV network (Globo) lying about the existence of Acre (a state people jokingly say doesn't exist, like North Dakota in the US). I can't remember the exact sentence now though.

:)
Is the open source work on Kubernetes at Google being done directly on the GitHub repo or is there an internal mirror where work is first done and internal issues tracked separately, similar to Android?
Readability (https://www.readability.com/) is a helpful tool for reading sites which with hard-to-read designs: http://rdd.me/sjahtctg
To compete in sewage water, Rio Olympians turn to antimicrobial clothes
You also lose the social interaction that gave motion controls their (limited) success. Wii Sports is fun because it's a light social activity like card games or horseshoes. VR is currently an anti-social activity, even moreso that normal video games.
Here Are Parker Conrad's New Startup Plans
C# Developer | VENA | Full-time | TORONTO, CA

Who are we? Check out the awesome work we’re up to at: https://engineering.vena.io

You will be responsible for building the next generation of Vena’s Windows offerings. You value solving complex and interesting problems. At Vena, you will fill that core need by leveraging Excel Interop/VBA, LINQ, lambda functions, JSON-based Web Services, parallelization, and more to create awesome features in conjunction with our back-end server’s in-memory cube, transforming Excel into a data powerhouse.

We can’t wait to hear from you! Apply at: http://bit.ly/29hgbI9
I couldn't help but notice that every time this thing popped up, not many people had much to say about it, always had a high amount of upvotes, never many comments....
No one doubts that there is a rich ecosystem available for C. The thing just is, when you are working in a Go environment, what benefit would adding C with its own toolchain bring?
Kiss_sdl: Simple universal GUI widget toolkit for SDL2
This is the benefit of risking your money when investing. You are in a position to get your money back first (since you took the risk on the company and the employees that you paid).

Many times this gamble doesn't pay off. There are plenty of investors that lose huge amounts of money. I think they call it the 80/20 rule.
You're right, but if this box is cheap enough, and we're talking about deploying 1 per village with natural spacial reuse, it's possible to see a political campaign allowing villages to install their own basestation on some empty bands.

Also maybe it could work in a city, where neighborhoods join together to request a license from the city and the city will work with neighborhoods choosing suitable locations as to not interfere too much with each other.

But of course it requires a political campaign and this might be a trigger to start that, with facebook also helping.
Nice piece of history, and hilariously/sweetly innocent/naive in its specificity and certainty, like only newbies' first "design document" could be.
...but still lacks on other web standards such as getUserMedia() which is the one reason I still have to use flash.
Something to know about before going with delimiter – https://www.reddit.com/r/sysadmin/comments/4hx9w4/eve_online...
This. Does your game have a river? If so, humans observing the river will veeery easily be able to spot it's a fake. Because an actual realistic simulation of turbulent river flow is way beyond the largest supercomputers today, and Moore's law has run out of the steam that has made todays consoles have the computing power of your fathers supercomputer.

I'll bet dollars to doughnuts that even twenty years from now, by far the cheapest way of creating a completely photorealistic VR river scene is to build the actual river and record video of it. Then you "only" run into the problem of storing and distributing the petabytes of data you record.
Buried in the middle of this (wonderful) article is the heart of the problem -- academia has foolishly placed its metrics into the hands of editors and publishers, who have corrupted the living hell out of it. Ctrl-F "Cochrane" and witness the exchange between an editor, who benefited from the status quo, and a scholar, who did not and does not.

Academia != scholarship and has not for some time. There is no longer a good reason for traditional for-profit journals to exist. (Before someone says it: SpringerNature likes to pretend that editorial independence is possible, but they'll have no choice save to fire their "news" guys if their board asks for this).

Please recall that the entire point of the World Wide Web was to share physics papers. The arXiv exists because of physicists (who quickly noticed that HTML wasn't a good substitute for LaTeX when writing math-heavy papers). The problem is not technological. It's social. And until the incentives are fixed (the Cochrane Collaboration in Britain has gone a long, long way to address this, and now the Wellcome Trust is going even further), nothing of any real import will change. In the USA, NIH could make a lot of positive changes (and in exchanges with mid- to senior executive level directors, I honestly believe they're trying to do so). But it will take time. Academia moves with glacial speed, when it moves at all.
I've been getting this error from CSV I created in Ubuntu. Glad to have learned what this was about.
One step closer to Facebook's second billion.
> VR? Probably not. VR looks to be the next 3D TV. It's just too much of a hassle to go mainstream.

I disagree, I think VR is going to be the next big thing but it will take a few generations of HW and SW to get there. VR mixed with real time video of your surrounding (augmented reality) is a new environment for brand new applications but it needs to reach the state where it is hidden in your average looking glasses to be really mainstream.
it does make your opinion an unpopular one.

Not necessarily, it could be that only 40 people in a population of hundreds of thousands enjoyed the article, but only one of those others felt the need to point it out (against the HN guidelines).
Thinking about Big Data – Part One
They serve different purposes, and I actually use both for different reasons. Encfs is seamless, it's encryption that doesn't impede normal operations. You can just mount it and you're off to the races.

Duplicity on the other hand is a backup solution. I use it to back up my mail server to S3. It's super handy for that, but it really couldn't be used with plex seamlessly like encfs could be.