skysight-inc/HackerNews huggingface dataset:
They don't teach you how organic solvents often dissolve polar materials such as various polymers? I'm really becoming befuddled here, what do they teach then?
I wouldn't know about it. I have seen more corporate political comments on HN, albeit far and few in between. But they are there.

I think a simple thing to do is to spot them and favorite them if you're interested in this sort of thing.
Last time I used a locker for delivery, they tried to deliver twice when no lockers were available, broke the item on the second try and then gave a refund instead. I think the experience varies.
This is such a fun story. It’s how I commonly introduce common folk to the importance of true random numbers in cryptography. Glad to see it come up here again.
Only if you succeed in becoming a monopoly. Otherwise it's just how capitalism is supposed to work.
Someone should contact https://explorabl.es/ because this seems like an explorable exploration!
But they involved fraud, no? That’s not success. Almost anyone willing can commit some kind of fraud at work, but why? He could have ploughed his abilities into something above board as his brother kept on suggesting but it seems he always sought the “quick buck”.

Also his dollar bill serial no matching thing was foolhardy.
Is it any easier than C# or Java? O-o
Not with the magic of Hollywood style accounting.
That’s fine until the large corporation lays them off, they find their skillset is not marketable and then they start whining about “ageism”. (I’m in my mid 40’s and I’m still a developer FWIW)
Yeah, I hate things which automatically mess up my configuration files.
This a DDD aggregates design guide, not database schema
>Just wipe out the shareholders when the time for bailout comes... I don't understand why more people don't propose something along these lines.

The answer seems pretty obvious. If you don't believe that any company should be "too big to fail", that's valid, but it's not exactly the situation we have today. Secondly, those shareholders you speak of aren't just a small group of billionaires. Many of these companies make up substantial portions of people's returement savings, not to mention the knock on effects of huge businesses going under.
Compiling C to PowerPoint
Australia SAS execute unarmed farmer holding nothing but prayer beads 2012
Only if/when he sells.
You have no standard contact methods available on any of your sites that do not require registration. Consider publishing your email address; I am happy to chat. My email is in my profile and on my website.
>Why shouldn't that rule apply to large corporations?

Because it makes little sense to compare a corporation's finances to your own, especially in a low margin industry, and it would completely stifle growth.
A decent amount of data scientists work on AB tests which is science on production data.

Actually I'd say that's as common as the failed ML projects
And comments like this usually come from people with a warped concept of money and funding. But it doesn't help to comment on the nature of a poster because you don't know much about them.

The comment is not on the necessity of money but the amount. I legitimately can not fathom why AirBnb needs that much money to run a service business on top of a custom app and website when the fundamental complexity of the business (the particular nuances of local markets, their regulatory/compliance needs, etc) has always been a second thought to their management and trawling for articles, it does not seem like they need that much money to continue. Particularly since regulatory bodies and courts have closed worldwide.
Patience, my friend. Media hypes up the tech, but the work will take time.
Interesting, are you storing the entirety of the data locally? I kind of want to try to dissect and run some backtests to see if there is any merit or trend (outside of the obvious in hindsight covid selloff)
With 13,000 employees at an average fully-loaded cost of $150K/yr (just a guess), $1B will let you keep them all employed for about 6 months.
How about we remove all the videos claiming people shouldn't be wearing masks?

Or is actually saving lives to much bother and it's more fun attacking people who believe in reptilians?
You are completely misreading those charts. The interval is 1Y, not one quarter.
No capital gains, but yes estate tax (at 40%).

Of course, a savvy parent would put pre-IPO stock into a trust, using up some portion of the $5-10 million exemption amount (it's up in the air because some of the Trump tax cuts are not permanent). Millions of dollars in pre-IPO valuation stock turns into tens or hundreds of millions by the time you die. And there are more nuanced (and/or aggressive) strategies that can yield greater results — or at least that's what I remember from my trust and estate law class.
Weird - I could have sworn I saw two different versions, when I pressed the back button.

But I’ll accept that I am mistaken about that.
> I also abused the hell out of Yahoo Pipes - I would run RSS feeds through like 15 different languages with Babelfish before back to English, just for kicks.

For a while it was common to find SEO-spam sites composed entirely of posts generated this way. They would translate from a source language back to it in a roundabout way and end up with an article that was "different enough" to count as unique content to Google.
Good summary, thank you.

- we will extend SIMD to where clause, keyed aggregations, sampling, ordering, joins etc. It is a matter of time.

- do you mind elaborating on how we screwed up date and time?

- what makes you think we are never going to compete on performance with kdb+?
This is not correct. Apple has an inventory, stores, employees in those stores, etc. Likewise, for your other examples, these companies have to hold things on their books like hotel staff, lease payments, building maintenance, etc regardless of demand.

Airbnb is different. When demand drops, their costs directly drop as well since they don't pay hosts for stays that did not happen.
Eighteen years ago my university let me host PHP scripts in a /~user directory, and I wrote my own simple blogging software and ran it there.

It was vulnerable to the attacks described here. Thankfully no-one on that domain ever exploited it in that way.
Then they don’t get to come whining to me for bailouts.
The aesthetics would be ruined by left to right writing. You don't make a website about "traditional" colors and purposely use a Mincho font and not also use the traditional orientation. The color name underneath isn't "English" either, it's Japanese written with Latin characters. The convention is to rotate left to right scripts when using vertical typesetting, complaining about it is like complaining about an American site spelling "colour" as color.
and sub $3k 1BR monthly rentals too.
Yes, if you google "coronavirus iceland" you'll see they've tested almost their entire population. They found 1586 confirmed cases, of whom only 6 died, which gives a fatality rate of 0.4%.

Turning this around, if we multiply confirmed deaths by 264, that gives us an estimate of how many cases there are. So, for example, with UK's death count of 6159 this means about 2.4% of the population is infected. Furthermore, on the Diamond Princess only 20% of the people onboard caught the virus under poorly quarantined conditions. So, to extrapolate even further, this would imply that over 12% of the UK population has already been exposed to SARS-CoV-2. This means that the UK should peak at about 50k deaths, without any protective measures.

In 2018, the UK had 50k deaths due to flu in excess of normal flu deaths.

https://www.telegraph.co.uk/news/2018/11/30/winter-deaths-hi...
It's called "counting your chickens before they hatch".

NASA is still not yet capable of putting men into Low Earth Orbit, much less getting them to the Moon and back.

I do not believe at all that NASA has the capability to install a 'base camp' on the Moon in the very short time of 4 years.
Maybe in a civilized place where there is density and people aren’t wont to commit senseless vandalism. Singapore, urban Finland.

Also it would seem it’s not an energy efficient way to deliver goods to people, but who knows. Paradoxically it would make sense for high value/low mass items like medicines (or narcotics too), but that would make them a more enticing target.

Delivering tacos or sushi on the other hand... maybe years hence.
This equipment isn't something a hospital has unless they have a serious desire to do top notch genetic disorder testing, and that kind of hospital is going to use the equipment for this cause. The Abbot machine is something practices with much harder financial constraints have to seriously worry about paying for.
> This is a beautiful looking site but is decidedly designed for Japanese readers.

Well, yeah, it's a site in Japanese with specifically Japanese subject matter, why is that a problem?

> I will leave cultural commentary aside. While the romanized names are large, they are incredibly awkward to read being rendered vertically with rotation

IMO, vertically-with-rotation is fine, probably even ideal, for reading the romanized text given the rest of the design, which presumably is appropriate for the main target audience.

The only real readability problem I see is that the text color doesn't change for contrast with the background color.

> I would recommend rendering the romanji vertically without rotation

Please don't. Consistently rotated context is easier to read as words than vertical words of horizontal letters.

> or using a Western left-to-right rendering

That's done for the Romanized text where space permits (e.g., for the selected color in the right-side banner.) But unless you are suggesting that the site should be designed first and foremost for Westerners, I don't see any more of that as reasonable.
Ppphhh we don’t need to do exploratory data analysis or prepare the days, don’t you know that neural networks will do all that themselves!

Doesn’t yield the right results? Clearly not enough data.

Still doesn’t work? Change to whatever the latest model google or fb is using and try again.

/s
I have good contacts within FedEx, and as I understand it the general consensus there is that while losing the Amazon contract hurt, UPS is doing it so cheaply there's no way they're even close to breaking even on it. What's more, it's a substantial part of their network volume - so when Amazon pulls their business to go it alone, UPS is going to end up cash poor and having to deal with aging infrastructure and inflated costs from overcapacity.
Absolutely! Having 'name_given', 'name_middle', 'name_family' or some nonsense like this is one of the most common mistakes in database (and application) design, usually made by culturally narrow-minded Western developers.

Take names in Myanmar [1] as an example. From Wikipedia:

> Burmese names lack the serial structure of most modern names. The Bamars have no customary patronymic or matronymic system and thus there is no surname at all.

That said, it is hard to push back on a business requirement to sort users A-Z based on family name, just because.

[1] https://en.wikipedia.org/wiki/Burmese_names
Ah, a sensible take on security. Refreshing.
Why not just store GPS coordinates and do geospatial queries? which gives you nice features like "show me stuff within X kilometres of a shop" and "is cutomer X within bounding box Y?".
There are several accurate summation algorithms; Kahan is one of them. Looks like Postgresql uses an accurate summation method[0] (and not Kahan), so that's probably a big factor in why theirs is so much slower and also makes for an unfair comparison. FWIW I posted AVX2 and AVX512 Kahan summation implementations here[1].

[0] https://github.com/postgres/postgres/blob/3ed2005ff595d34927...

[1] http://blog.zachbjornson.com/2019/08/11/fast-float-summation...
this is great. DNS TXT records are under appreciated. It's a distributed key value store with distributed caching
If gravity is warping of spacetime and works differently/fails to work at very small scales, is it 'space' that really failed?
You are downplaying the value by saying they will be useful in the future, rather than now.

This is not so. They are valuable right now.
Any business plan that included "preparations for never before seen economic disruption due to global pandemic" would be hilariously bad.
If by “service,” you mean the part where I pay someone else’s mortgage, then, yes, I have a problem. If you mean taking care of maintaining the property (which is what I think you’re getting at), then I don’t have a problem paying fair value for the labor involved.
Employees and potential assistance for hosts...
Ha! Only on HN will a golem gray you down for wanting to give a guy's library a test. And I'm getting ready to do a PR in the next few days to help him out!
Tesla autopilot crashes are a closer analogy. A seatbelt is (generally) not an improperly used piece of safety equipment, it generates actual security.
I really like this proposal. Is there a reason it’s not being seriously considered?
First author here. First of all thanks so much for the interest in SReC! It was a pleasant surprise seeing my research on top of Hacker News. Answering a few questions from reading the comments:

How is this lossless? The entropy coder is what makes this technique lossless. The neural network predicts a probability distribution over pixels, and the entropy coder can find a near optimal mapping of pixel values to bits based on those probabilities (near optimal according to Shannon’s entropy).

On practicality of the method, I don’t expect SReC to replace PNGs anytime soon. The current implementation is not efficient for client-side single-image decoding because of the cost of loading a neural network into memory. However, for decoding many high-quality images, this is efficient because the memory cost is amortized. Additionally, the model size can be reduced with a more efficient architecture and pruning/quantization. Finally, as neural networks become more popular in image-related applications, I think the hardware and software support to run neural nets client-side efficiently will get better. This project in its current form is just a proof of concept that we can get state-of-the-art compression rates using neural network. The previous practical neural network-based approach (L3C) was not able to beat FLIF on Open Images.

For a detailed explanation of how SReC works and results, please refer to our paper: https://arxiv.org/abs/2004.02872.

Btw, SReC is pronounced “Shrek”, because both ogres and neural nets have layers ;).
> Japanese people read roman letters differently than we do, letters rotated 90 degrees is awful for readability and should never be used

Unless Japanese people read words differently than we do, letters rotated to face the same direction as the words they compose is exactly the right way to do things; consistent but rotated word shapes are more recognizable than words composed of letters that are oriented at right angles to the way the word runs.
> We try to avoid both issues by utilizing a currently unused Sanger install base and low-cost reagents.

Good thought! Thank you.

Additional question: are Sanger instruments also very sophisticated and manufactured by those limited few pharmaceutical companies/medical equipment manufacturers? Or is there a need or necessary to scale up the production for Sanger instruments too? I am asking that is because lack of testing is a global issue, not only in the U.S. Africa/India together has 2 billion people are the testing hurdles there are even more challenging.
No traffic and direct paths?
Gotta win the speedrun with NixOS!
I’ve been doing an MS in Data Science very slowly due to work and 2 new kids. Finishing the degree this year in year 4. I was very excited about the prospect of doing something different. A few things have changed for me.

1). I am hearing about Data Science Teams being furloughed during these times. That isn’t happening in my function (Corporate Finance). I am glad to be secure even though I enjoy much of the data sci work.

2) I’m able to apply Data Science concepts in my current role, and it’s adding a lot of job security and providing me with exposure. I am much less interested now in moving to straight Data Science and instead am applying my learnings in my current role as a sort of in-house Data Science guy. But I have a lot to learn to be honest.

3). There seem to be a lot of “thought leaders” acting like they are big experts in the area and really don’t know anything many of us amateur scientists don’t know. They pull perfect clean datasets and show these magic transformations they just copy from others to get YouTube hits or Twitter followers. That just never happens in real life, and many leaders are seeing this and losing interest in this function in the returns they are getting from sole data science folks.
> And that's the reason why the SBA loans that are part of the stimulus package are not going to save the small businesses they are supposed to be saving.

I’ve been assuming the best case scenario for them is to slow the death of many of them. Some will hang on for awhile, and the shorter this goes on the better the survival rate.
> intubation, which is the process of pulling or pushing a tube down a patient's esophagus

Hope not. It's endotracheal intubation. Tubing the gut (accidentally) leads to gastric distention as we ventilate the patient, leads to aspiration, leads to aspiration pneumonia, leads to huge increase in morbidity.
Christian Scott Quintet (48 min)
$15 is half the price of even the bare minimum qPCR kits (e.g., TaqPath). We need to buy the reagents from NEB, IDT, and others and work with a contract manufacturer to mix it into a reaction. Reagent, manufacturing, quality control, and fulfillment cost already add up to ~$11/reaction. That does not take into account any costs associated with developing the assay, supporting the assay, getting it through EUA, customer service, bioinformatics help. And we have to pre-pay for all of the reagent costs in the anticipation of the volume. I anticipate that we will likely end up net negative with this work, and even if it ends up being slightly net positive, it will not impact our valuation in a positive way.

The current equipment owners are already the clinical laboratories. It is unused capacity for them. Other owners are sequencing service providers. The full cost of running an end-to-end Sanger reaction as a provided service is $2-$6, so at the $50 reimbursement price, the laboratories will still be incentivized.
This isn’t unique to data science. I personally know people in finance that are poor coders and even worse quants, yet they go around lecturing at universities.
I've been making these for a couple weeks now. The clear plastic part is generally sourced using the thick binder/presentation covers that come in 8.75x11.25 inch sheets, precut. The only requirement is a hole punch. Headbands can be any elastic material (I've been using button hole elastic for easy adjustment).
Dupe. https://news.ycombinator.com/item?id=22798914
Color component coordinates are meaningless without an associated color space.
Well in code we're using C#'s decimal type (128 bit. 96 bits are used for an integer and the rest used for the sign and scaling factor) [0]. It's essentially just floating point applied to a base 10 integer rather than a binary one.

In the SQL server database the column types are usually decimal(18,5) or decimal(25,12) [1]

[0] - https://docs.microsoft.com/en-us/dotnet/api/system.decimal?v...

[1] - https://docs.microsoft.com/en-us/sql/t-sql/data-types/decima...
Introducing Selenium to testing teams has been a complete game-changers for a lot of organisations I work with. Often traditional orgs will assume you can't automate front-end testing because it requires a user to go through all of these processes in different front-end SaaS apps. It's literally saved hundreds of man-hours across the organisations I've introduced it to and allowed the project teams to focus on features and reporting instead of testing.

Thank you!
> The FDA has recently made clear that no at-home self-collection tests are allowed

I think rightfully so. I was on a government video conference where a doctor showed the current CDC testing procedure, which involves stick a swab in the nose all the way to the back of the throat. They explained that the further the sample is taken from the lungs the less accurate it is.
Actually initial viral load seems to be a factor in how severe the disease gets. So keeping any percentage more out of you that you can helps..
The vendors are able to iterate when adding new features, but they have to maintain all the old stuff for back-compat reasons. And some of it is core language behavior that cannot be changed but which does surface everywhere - e.g. equality and implicit conversions.

When you account for that, I would strongly disagree that JS has less weirdness and cruft than Python.
> AFAIU Component-Based Software Engineering has been a bedrock principle of applied formal verification for decades.

Yes, and still the only software verified using such techniques has been tiny (< 10KLOC) and required extraordinary simplification and tremendous effort by specialists. It's like saying that particle accelerators have been a bedrock principle of turning lead into gold. It "works" but not in any sense that makes it a repeatable, affordable practice. Moreover, the gap between the size of programs verifiable in this way and the size of a "normal" piece of business software has stayed pretty much constant over the past four decades -- 3 orders of magnitude.

> And even if it's not sufficient, a solution where some components are formally verified is better than where none are.

Better in what sense? Is it better to soundly verify one component or to use unsound methods on an entire system (even assuming similar costs, but often the latter is cheaper). Soundness is costly and is never a real requirement as a software system is a physical system, anyway; machines only perform machine instructions according to spec with some probability, and probability is all engineers can ever hope for. But sure, sometimes there are small components that are easy enough to verify with deductive proofs, making it the most affordable path to high confidence, although I'd say that's the rare exception rather than the rule.

> Circumscribing soundness isn't an alternative, it's complementary.

It allows you to use automated methods that don't require careful modularity.
Doesn’t MIPS have sb? Was that not part of MIPS I? (Or are you talking about DEC Alpha?)
Not OP, but Ivey didn't touch the cards or use any kind of technology to win. That's not cheating. He should be paid.
Dark is similar. I think they're still in private beta, but I got my invite pretty quickly.

https://darklang.github.io/docs/introduction
If they expect to have $500M cash on hand next quarter [1] and still need the money, then it's much easier to raise it at 10% now than take their chances then when they're in a much worse position.

[1] Seems fairly likely given their employee count and cash burn.
Weight. Weight is the biggest limiting factor stopping drones from delivering packages. By far.
Thanks, this is a fascinating resource!

My logic with the address field is to try to consider what is the purpose of the address in the application.

If it is used for someone to send you a letter in the mail (for example: university admission) then you are better off with a big box where the user can write the magic blob of text that usually gets their mail delivered to the right place, up to instructions to the local postman.

If you need to pull off some analytics, or need to estimate shipping, then just extract the fields that your shipping agent demands: country, zip code etc. Leave all else intact in the "magic blob".
Thank you Zach, this is super interesting and useful! I wonder why PG do not use Kahan?