skysight-inc/HackerNews huggingface dataset:
Have EV companies completely abandoned the swappable battery idea?

I always thought thatd be the endgame. Some standardized battery design where you roll up on top of a station and it swaps the battery underneath the car.

Or maybe this is something your car does for you before arriving. Which eliminates the amount of dead time tens of thousands cars will need to spend while using up expensive property in cities while charging.
The cost of manufacturing energy is not the only cost when you need to distribute energy on a large scale. Electrical grids are prone to oscillations and having less and bigger power sources makes things a lot easier and more reliable (and that means cheaper also). You can store energy but that again increases complexity of the grid and costs (even super-cheap storage will always be more expensive than no storage). To partially solve this you can concentrate solar into large solar farms, but than you have a problem with the space available, you need a lot of land for that - which is perhaps less of a problems in US or Australia or Africa, but in densely populated areas like Europe (which is also located more to the North and gets less sun) or Japan this creates problems. Also there is an issue that our climate is changing and becoming more and more unstable, which could cause lots of engineering and exploitation problems for renewables (hurricanes, hail storms, unexpected drops in temperature and periods of bad weather like this summer in Europe in May). So I don't think it's (yet) all that certain which is the best way to go long-term, and IMHO the clear win of renewables is more a picture painted by media than a solid science.
Utilities often get recompensated based on a percentage of what they spend.

If you assume they are rationally going to maximise their profit potential then saving money isn't really in their interest even before you get into externalities that they impose on others.

Another example of this is utilities moving coal and gas plants that are no longer economic into these kind of compensation deals to they get a guaranteed profit based on what the cost to run. This is why it's estimated that closing all coal plants in the US would save 10s of billions dollars just in lowered electricity costs, even before factoring in pollution and carbon.

For info on the research "value of solar" is the general term. It varies by geography and location (e.g whether demand is growing or falling, what the other power they displace is coming from etc) but it's generally pretty positive for solar. The number is even bigger when you include things that would save customers money rather than the utility, and as regulated industries they should probably be forced to consider those costs.

But what you said and what I said aren't strictly incompatible. You could get a prisoner's dilemma type situation in which it only makes sense for you to do something if someone else is forced to do something too, otherwise they would defect and gain even more. Doesn't mean it's not economically beneficial for both.

I have no real interest in whether solar makes economic sense for a household or for a utility. It clearly is at the society level and we should be organising ourselves so that we maximise the benefit, not throwing our hands up and saying "well, if it would involve changing a minor regulation on an already heavily regulated industry, then I guess I'm going to have to choose the more expensive option instead"
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Also cool, the adventure of circumnavigation on solar:

https://en.m.wikipedia.org/wiki/Solar_Impulse

Captured on this Nova special: https://www.pbs.org/wgbh/nova/video/the-impossible-flight/
running errands

... is exactly the kind of use case for which these shared scooters are ill-suited.

You stop for your first errand, come back outside afterward, and bam! someone else took it. What if there are no others nearby?
Many people are using Quora to market their product.
The pattern I have seen is they ask a question that they want to appear for in Google (other search engines), and then they answer the questions plugging in their product.

Suitable for the company but bad for the platform.
Downvotes Should Provide Reason
Downvotes lately have become sort of a joke. People are downvoted for providing a different opinion. I think users should be required to provide a one-line reason for downvoting the user so we can all better understanding the motivation and perhaps come to an agreement why it was downvoted.
In that year we'll have teleportation. There will not even be roads for your self driving car.
I'm pointing to the use of motorcycle because of battery mass ratio.

At some point, you can not improving the range any more by adding more batteries because any gain will be eaten by more rolling resistance.

At some point you will arrive to the point when your vehicle starts to resemble a battery stack with two wheels.
Academic research :)

And personal FOSS projects of course.
It's best not to think in GB terms when talking about AD datasets. E.g., when you record raw data of a multisensor setup (lidars, radars, cameras), the data rate can reach 10+ TB/h. Camera-only datasets are in comparison much smaller.

Taken out of the argoverse dataset description:
- One dataset with 3D tracking annotations for 113 scenes
- One dataset with 327,793 interesting vehicle trajectories extracted from over 1000 driving hours
- Two high-definition (HD) maps with lane centerlines, traffic direction, ground height, and more

1000 driving hours is ok'ish for research (imho).
Not to jump on the bashing train, this tracking might not be for advertising purpose only right, this could be put in place for copyright protection.
In the comment section was “learn to code.” Totally Insensitive... and not that I agree, but nonetheless close to the point. The consolidation and automation of news is here to stay, and not just journalists/writers — all of us, in fact — need to be very careful to learn the new skills it takes to compete in an increasingly automated world.
Great that they're experimenting with content discovery mechanisms. Unfortuntely, with these micro trailers they seem to be going the same route as Netflix: enticing people with flashiness alone.

I think most people will go to the reviews section or an aggregator website like Metacritic before they purchase a game. Why not include that information up front along side the flashy visuals? Surely that would reward talented developers while giving users the best possible experience.
The Shape of the World, According to Old Maps
I think that their critique of the overall judicial system was a tangential aside and didn't - directly - apply to this specific situation.

Admittedly, I could be wrong here but that was my take-away from the OC.
Its metadata, I doubt it does anything.
> Solar/Wind/Storage are beating almost everything.

Does anyone have numbers, how fast (yearly added kWh per capita) has any country built solar+wind lately? Or plans to build in the near future? When Sweden built nuclear in 1976–1986, they added 640 kWh per capita per year. Will some country or state beat that record?

Source: this figure

https://science.sciencemag.org/content/sci/353/6299/547/F2.l...

in this article

https://science.sciencemag.org/content/353/6299/547
was anyone able to download the audiobook from this page? i don't see any clickable links.
Is there any effort/motivation to change this? Not saying we should or shouldn't, just wondering.
By posting the photo to Facebook in the first place, you are giving them near unlimited freedom to do with it as they will according to their usage policies.
Elon Musk’s Elusive Brain-Computer Firm Just Made a Big Reveal
At least you will have autnomous traffic jam assistants much earlier, which allows you to spend more time on HN while stuck in traffic on your way to work on true self-driving vehicles ;)
Interesting, besides the booksellers or collectors, Amazon also creates these looking for other stuff. Somehow they reminds me those Mexican farmers along i95. While farmers always move for jobs almost always have a destination, these are truly nomads.
This has mostly to do with
martching age horizon of source of funds and utilisation of funds. Banks borrow short (from deposits of individuals and companies) and lend long which exposes them to a certain amount of financial risk. The big banks usually don't hold the paper and mitigate by securitizing the loans. Some smaller banks and merchant banks who know their customers better tend to hold the paper. Actually owning the property is a much longer time horizon activity than simply lending long - so the entities who do that are the ones who actually want to hold - ie. Individuals and families
> That 4% you mention was less than 1% not so long ago and will be closer to 40% not too long from now. Such is the nature of exponentials.

But such is not the nature of the logistic function, which is usually a more accurate model of how technologies penetrate. (yes, in the beginning it looks like an exponential)
Solar is getting so cheap that it's becoming economical in places that might surprise you.

The UK sits further north than almost all of the USA (excl. Alaska), and has a climate not exactly known for its abundant sunshine. But large-scale solar farms are now commercially viable here without subsidy. (eg: https://www.clevehillsolar.com)
I was in Cairo a few years ago and in the old Islamic city there was a couple of big mosques. This dates back to the Islamic era (around 1359). Standing in the venue that separate the two mosques. Here is the location: https://goo.gl/maps/ibwqwb33PcUJvm1K7

It was in the Summer and Cairo was boiling hot. But interestingly the venue was pretty cool. There was two factors: The mosques shadowed each other in a way that you don't get exposed in the sun. Another factor, there was a cool air flow coming from somewhere(?). My guess would be that the two buildings where engineered to both protect from the sun and generate the airflow.

You can sit in the venue all day long and not be annoyed with the hot weather. The buildings themselves where pretty cool inside.

I think the question is: Why are we so inefficient today? It's not about looks either: We are building even uglier buildings. The building I'm living in right now is buzzing with air-conditioning units. It's wasteful and it's also an inferior solution (headaches, dry air, only inside is cool, etc...)
That's ignoring the fact that these 4.5 trillion won't be lost they will have just have shifted into the hands of the public.
Amazing postmortem!
I have a question: I see a lot of software / process solutions to avoid this to repeat in the future. What about the Human factor?

- what happened to the engineer(s) responsible for that event? They must feel really bad RN, how do you handle this situation?

- on a more general point, how do you train individuals to ensure this particular event does not reproduce?

Edit: formatting.
The problem is not DFA vs NFA.

“regular expression” has different meaning in programming context and formal language context. Regular expressions in regex libraries do more than match regular languages.

PCRE can recognize also all context free languages and some subset of context-sensitive languages. Just having backreferences makes the problem NP-hard.
Pittsburgh - I guess they are after Uber ATG talent.
offload the risk of personal property theft

... which somebody always pays for (the customers, if the business survives, investors if it fails).
Who gives Facebook the authority to do so?
Yup. Quora is basically a spam-magnet. I don't even click links that point there these days.
Chrome allows installing unsigned extensions by enabling developer mode in chrome://extensions. On browser startup you'll see a warning [1] that encourages you to disable unsigned extensions, but users are offered a choice.

I do trust Mozilla, though I'd prefer if they'd also trust me to be capable of making an informed decision and give me a choice while using their product.

[1] https://i.imgur.com/iGEYMwv.png
Ok, now I get it... I was just lost in the syntax.
Google Admits Listening to All Your Conversations Secretly
There's a simple solution to any problem related to Facebook. Stop using it.
To dig deeper, go to the PDF: https://www.nrel.gov/docs/fy19osti/72399.pdf

> Land is already purchased so cost is zero, use what you generate so sales also zero, zero tax, zero net profit and nobody values the overhead of their time for these things

Their basis: "We model a 6.2-kW residential rooftop system using 60-cell, multicrystalline, 17.2%-efficient
modules from a Tier 1 supplier and a standard flush mount, pitched-roof racking system"

So what they've done is effectively get quotes for installing their sample system and then divide by its power output. Sales tax, profit etc are added to the bill the customer pays the installer. Other tables give a more detailed breakdown.
Hm, I would say that some consolidtion happened with that deal. Quote: "VW is also handing over Autonomous Intelligent Driving, the self-driving subsidiary that was launched just two years ago to develop autonomous vehicle technology for the Volkswagen Group. AID is valued at $1.6 billion.

The Munich-based AID team will become Argo’s European headquarters, a move that will expand its staff 40% to more than 700 employees."

AID has been Audi's L4/L5 development arm, which was separate from VW's main research arm. It also helps to judge the size of this deal, because VW only seems to invest one billion in capital and the remaining 1.6 billion investment is AID. It would be interesting to know, how they came up with that valuation ...
> We will not see any real self driving in our generation, and may be not even after.

I think we can once we build purposeful infrastructure (think cars "on rails" with mesh-coordinated intersections).

> Second to that, just how many self driving and AI startups are plain fraud? The amount of companies getting 9 digit valuations with nothing more than OpenCV hello worlds should make people to at least scratch their heads

Argo, although lesser known (but still out of early Waymo and CMU's Robotics Institute), is every bit as competitive as the other major players. If anything, they are less bombastic than the Elon Musks of the world falsely tweeting that we would all be taking naps in our cars by last year.
You mean Carnegie Mellon University talent.
How can you be so sure?
You don't think that unreasonable rationing is happening in the US right now?
Seems like those types are the ones fetishized here in the Valley (and end up getting showered with cash accordingly).
> Aren't roof solar panels very inefficient? They can't track the sun

We are well past the point where tracking the sun was desirable. The apparatus that allows solar panels to track the sun is now much more expensive, especially when you consider the maintenance costs, than just using more static panels.
Metadata is data.
Wow.. and you don't feel like the comment you made is contributing to the problem?

If you want to live in a society where respect trickles up instead of violence trickling down then you mustn't express yourself with violence.
One should note that they went to quite a length to hide it from mainstream EXIF readers

It is not in a comment field, nor it reuses any EXIF guid equivalent

A much more grievous thing they may be doing is speculated to be them encoding tracking into photo's hue channel.

There was time when you was able to see a stripe of odd pixels in the right bottom side of some photos.

Later, I read a blog post saying that if you upload a solid grey picture, you will see weird subtle colour banding patterns on it if you download it back.

I tried myself now, and it did not work for me.
Any increase in base load would reduce the amount of renewable+gas/storage capacity needed, so at worst it's a neutral match for renewables.
It's R&D and depends on a lot of new innovation to be solved (new ASIC hardware for real-time inferencing, new ML model types -- potentially a new breakthrough even).
Those who agreed to the terms of service and uploaded their pictures.

This is akin to asking who gives Facebook the permission to badly compress pictures? The answer's same.
> We begin at zero. As a baby with zero biases and zero personality.

Personality studies are interesting, but how people are molded into one form or the other is very much an open question AFAICS. The above quote is a pure form of the "tabula rasa" viewpoint [0], and forms the basis of the article. Unfortunately, which any parent will tell you, the premise is plainly wrong. People have different personalities right out of the womb, and some traits are clearly hereditary.

It doesn't mean everything is predetermined either. Personalities are by all accounts the result of complex interactions between predisposition, experiences, choices and more that we might not even have identified yet. The whole process doesn't lend itself well to wavy-hand simplifications like this.

[0] https://en.wikipedia.org/wiki/Tabula_rasa
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Yet another example that progress and inventons can come from any country (or immigrants from any country)
This is an interview with the architect:

https://youtube.com/watch?v=VIKYjriWgiY

What comes across is that the client was very keen to do this, is there any reason why there aren’t many other buildings like this?

Mention is made of Portcullis House, office by the Houses of Parliament. Are they expensive to design? Just unusual for architects to design?

Shouldn’t this be standard where possible?
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I don't get why steam doesn't implement GameSpy like features. That is, a common lobby that list (and allow you to join) public multiplayer sessions for all steam games that you own.

It would make it possible to revive quite a few of those "dead" niche multiplayer games. And greatly engage the steam users around the steam games.
Are you signed into Microsoft account or using local account?

I've heard that Microsoft account sync the start menu layout, so it might come from your previous install.

I'm using Win10 1903 fresh install (local account) and I haven't get candy crush tile ever.
Make your own. Let us know how it goes. thanks, george
For both A and B, why do they need to check all locations? Wouldn't finding a single location be enough to prove that it's happening?

Also in A and B you seem to be saying it's difficult for them to see whether all the locations lack the check. But it sounds to me like their static analysis makes that fairly easy, and that that's what they found.

You are saying that VOS_memcpy_s's source code could be safe but have its safety checks hidden by the compiler if the compiler has strong optimizations enabled while simultaneously having asserts enabled and also every single call to VOS_memcpy_s has an assert before it. That seems like a pretty rare configuration, because AFAIK, asserts are usually disabled when strong optimizations are enabled. And it seems unlikely to me that Huawei would put an assert before every single call to VOS_memcpy_s, for multiple reasons, (1) because Huawei is sloppy, (2) because there's no reason to put an assert before VOS_memcpy_s if it has safety guarantees. So I conclude there's very little likelihood there are any checks in VOS_memcpy_s's source code.
I don't think that ever was a serious plan.
Not as easy as that if your friends are posting photos with your face in them but it’s definitely a very positive first step.
Printers shouldn't be watermarking printouts and neither should Facebook.
And "Cairo" refers to the physical city, not the graphics library ;-)
At least a quarter of my city barely speaks german.

But they need to be able to get citizenship afaik... So basically everyone can speak two languages on paper, though their knowledge of the native one is extremely rudimentary

You're also required to learn 2 foreign languages in school if you want to go to university
Probably difficult to get developers for "dead" games to bother integrating with the API.
>> Native talent is definitely a thing and anyone who says otherwise is either lying or trying to sell you something.

Maybe it is a thing. But I doubt it's the most important thing.

I'm an amateur musician too (I think that's what you mean by part-time?). Yep, I've seen people with a native ability, who can just grab an instrument and play. At the same time, I've seen the same people never improve no matter how much they tried, mostly though because they never tried, while others who were not as "talented" spent the hours and got better and better and better, and eventually better than the talented person and then much better than that. Some of the talented persons are too talented for their own good and never figure out what "discipline" means, so their talent remains for ever precocious.

And I've also seen people get mightily impressed by others' talent and overlook their own abiilties, to the point that they severely underestimate them. I have a close example (not me!) of someone who is just good with theory, but gets awfully disappointed that she can't just sit at a piano and start playing without thinking about what she's doing, like a cousin and an aunt of hers do. On the other hand, when I play with her, she's always the one who figures out where a song should start from, how we should transport a melody to our respective instruments, and so on. She knows music. But she can't just "grab an instrument and play" so she thinks she doesn't have a talent. Well I can grab an instrument and just play, apparently, but I have no fucking idea what I'm playing (she usually is the one who figures it out for me).

I digress. My point is this. You observe a person who has a natural talent and a person who doesn't, at the start of their careers. At that point, you can not predict which of the two is going to be a master of their craft, sport, art, etc (or if both are, or neither). There are so many other factors involved that talent, on its own, means nothing.
> DoJ is constantly "exporting" US law [...]

Could you explain what do you mean by this, and provide specific instances?
It gives the API provider the opportunity to let others take the risk and build a market for a potential feature. Then if the market is there they just cut access to the API for the others and and build that feature into their own app. This way the API provider always reaps the benefits and pushes back any app before they start to compete directly.

And while less developers will be incentivized to use the API seeing this behavior, very few can actually afford to launch a proper competitor. So plenty will continue do develop with this philosophy in mind, knowing that if it's successful they will be cut off but hoping they make enough and then just pivot to the next thing.
Any alternatives for maintaining remote friendships?

EDIT: with passive updates.
Reminded me of the top comment on the "Show HN" of Dropbox, back in 2007: "you can already build such a system yourself quite trivially by getting an FTP account, mounting it locally with curlftpfs, and then using SVN or CVS on the mounted filesystem." ;)

https://news.ycombinator.com/item?id=9224
I imagine on page 57 of the user agreement you give Facebook the right to make derivative works.