skysight-inc/HackerNews huggingface dataset:
Predicting stock marketperformance, i.e. performance of individual equities ?

The TL;DR answer is "no, but...".

No because by definition there is a high probability for individual equities to display idiosyncratic behaviour. Why ? Because we are, afterall, talking about individual companies. So their stockmarket performance is inherently tied to their corporate financial performance, their corporate prospects and how investors feel about all that jazz.

The "but" comes because there are, as always, exceptions to the rule.

You can, for example, engage in momentum trading. That should be (reasonably !) simple to model with a few inputs.

Otherwise, at the other end of the complexity spectrum, you can build a model to identify stocks that are in a macro regime. When stocks are in a macro regime it means that they are behaving as a proxy for macroeconomics instead of the individual usual corporate measures. This means you can build your model based on real quantitative measures (i.e. suitable macro factors) instead of trying to second guess idiosyncratic stock behaviour. The only real downside is that you will need access to quality macro data feeds, so if you are thinking of doing this as a retail investor (i.e. private individual) you might find yourself falling at the first hurdle.
Oh c'mon. Of course a blog on the website of a company is ultimately trying to pitch their product, one way or another. That does not invalidate the points they bring up per se.

It obviously needs a bit of critical thinking when reading it and taking everything with a grain of salt, but that's something I really hope we can expect people on HN to be capable of?
This list encompasses a bunch of people I really like: https://twitter.com/i/lists/1379466867815878663

The people listed here are also excellent and will help you get the lay of the land: https://twitter.com/ajohnsocyber/status/1345826838199693313
History of FreeBSD – Net/1 and Net/2 – A Path to Freedom
You need to look at other countries. Sweden kept their schools open, and not only did not a single child die, but the prevalence among teachers was no greater than in the general population.
That's not the original definition.

FU money is being able to say fuck you to anyone (including your boss) without consequences derailing your life.
Agreed that it wouldn't be the same (am Dutch).

I have to admit that the lack of salt might actually make it healthier though.
So I was interested in trying this but your sign up from does not work. I am using iPad if this helps you troubleshoot.
Yes this is so true.
It is a sign of our general alienation from nature.
We virtualize everything and think the simplified, abstract, intellectual picture is the reality.
Nature is much more than a mental model of it.
https://publicdelivery.org/magritte-not-a-pipe/
Somewhat related: I have a copy of SimCity 2000 for PS1. An interesting novelty, but it's basically unplayable. The framerate is atrocious, and that's on top of clunky controls where the controller simulates a mouse.
Upcoming API Security Updates – Action Required
Am I reading the pricing correctly? 135$ for running 30 specs?

We have Cypress tests that run automatically for every single git push which are running throughout the day constantly... if you did a price comparison we'd be saving something like $140k per month by not having a pretty UI for building tests
Cool project. However, the 2nd highest rated book is incorrectly picking up two different books.

Steven King's On Writing

Zinsser's On Writing Well

Also, some of the posts are recommending one book instead of another book, but being counted as a recommendation for the book that's not being recommended.

For example, someone recommended the Algorithm Design Manual as an alternative to Introduction to Algorithms, but its counted for the latter.
That's the bad management I'm referring to. I've seen a lot of bad management, but never actually that bad.

If software fails it's a team failure. QA is equally responsible for that, not just developers. Quite often there root of the failure is ambiguous specification (so whoever did that is responsible too).

And in the end the manager is also responsible, because he didn't do his job right (picking suitable people and coaching them, so they can do the job).
The GPU didn't really have the kind of muscle you'd need to do gpgpu, since a lot of the rendering workload was handled by dedicated instructions on the CPU instead of special-purpose or general-purpose GPU hardware like we have today. The PS2 inched closer but the PS3 was probably the first time Sony hardware could do anything resembling GPGPU. I don't think you were missing anything obvious :-)

AFAIK some other console vendors' audio DSPs were used for compute by specific games, though - I recall reading about a console game for one of Sony's competitors using the console's DSP to decompress game data during loads instead of synthesize audio.
No, you should stop spreading misinformation. Children are micro-spreaders. In countries that kept schools open, teachers have not fallen ill at a higher rate than other adults in the community.
Why do you think we'll lose Muji?

Presumably you've tried UniQlo too?
For sure! It gets talked about every now and then, this one generated a bunch

https://news.ycombinator.com/item?id=24886659
I feel like you've deliberately missed the point at multiple levels to get some snark in so just to jump right to the core: Silicon Valley salary is the utopian society you're so snarkily describing, and as OP has pointed out it's coming to an end.

The majority of the world is not on SV wages, so yeah they pay "as well as knowledge workers" in that none of the above pays nearly as much as you're thinking outside of your utopian society bubble. Trade jobs (electrician, plumber, etc) can earn equivalent or more in the real world :)
TIL "nominal" as a class of number (in addition to "cardinal" and "ordinal"). How interesting. In some way like a code point in a character set.
Interesting read. I think there are some ideas in there that can be used for sparql 1.2. especially regarding external function definitions.

On the other hand the sparql in the paper is decent but not excellent. The result is subtly different from the path query one, but I think fine for example use case.
In Europe we have buildings that were built 100 years ago. There are no issues with these buildings and I bet these can last for additional 100 years. It is insane that we have 40 years buildings collapsing.
Anyone finding the change point detection features of Kats useful?
"act of influencing people by changing their attitudes and perceptions regarding the way they view certain products, services and even beliefs."

(In the 20th century, the term propaganda is often associated with a manipulative approach, but historically, propaganda has been a neutral descriptive term)
I get nearly all my jeans from Next, they are the only retailer I trust to be consistent in their sizing across styles, makes buying from them online much easier. Other retailers could learn a lot I'm that area alone.
That is not true. The bitcoin protocol can change and did change. If you fire up the original wallet it won't sync.
Anyone can think of any practical effect this might have or is this something that at the moment seems to have only scientific relevance.
OpenChakra
FWIW, my direct manager was indeed "transparent", as in, he wasn't managing us textbook-properly, but he definitely shielded us from upper management BS, while helping us out to achieve our goals and enable our engineering work.

I usually try to avoid assessing management as "bad" (it's just a downward spiral, everyone just says it, and trigger each other), but in this particular case it was so exceptionally bad that we all went into long discussions and analysis of it.
‘Hometown ChaChaCha’ Netflix K-drama to be released soon on Netflix
Closing schools in March 2020 was acceptable. Closing them after summer 2020 was ridiculous, as the data made clear. Many countries chose to keep schools open (e.g. Switzerland) and demonstrated that it was safe, not to mention the right thing to do. Your comment looks like it was written in March 2020.
The attractive part for the spammers is that the costs are extremely low. There are lots of databases with leaked e-mail addresses available.
So even when only a small fraction of the recipients fall for it and the scammer only makes a limited amount of money per victim, it can still be highly profitable.
Strange that this paper doesn't even _mention_ GraphQL.
This wasn't primarily an issue of neglect. An inspection in 2018 found basic mistakes made (likely negligently) in construction.

The building was too slow to fix them, but the blame is more on the builders than the owners who couldn't easily pay the enormous costs to repair.
So are these the basic advantages? Bandwidth and latency? Some TV ads here tout 5G as "comparable to the invention of electricity", which seems to me mind-numbingly ridiculous, but I was wondering if there's some huge benefit that I'm missing.
This is what Sainsbury's appear to be doing - consolidating some of their Argos branches with larger Sainsburys stores and added general fulfillment centres. Not sure if this is across the country, but it was interesting to see the apparently-quick turnaround during Lockdown at some local stores here.
Milk is available and regularly purchased in every Chinese store. More than 90% of them are lactose intolerant.

It's not entirely clear to me why they drink so much of it, but I believe they consider it health food. It probably comes from copying Europeans.

(Do note that milk is quite nutritious even when you can't digest the lactose. The problem isn't that the milk isn't nutritious -- the problem is that the lactose will cause you various problems, most notably diarrhea.)
Any thoughts as to why USPS et al. are apparently not pursuing this?
Clojure's Datalog ("Clojurelog") basically looks a whole lot like SPARQL written using Clojure data structure literals and they do reference SPARQL in the paper.
Tangent: a pet peeve of mine is plots of alcohol vs disease plots that suggest that one or two drinks a day is healthier than none. This is not the case.

The data sets that produce these plots almost never take into account why people stop drinking. When you do control for this, and in the process filter out people who stop drinking because of other severe health issues, it becomes obvious that not drinking at all is the healthiest option.
> If you want to predict (multiple) time series using multiple series as input/predictors, that's a whole new level of difficulty. I don't know of a good automatic/fast/scalable approach that properly guards against overfitting

Have you had a look at algorithms contained in pytorch forcasting?
https://pytorch-forecasting.readthedocs.io/en/latest/
Correct. Yaroze programs could only run on other Yarozes, plus the worst restriction was that games had to fit entirely in Ram as Yaroze couldn't run burned discs.
We already have oodles of those - you can see them off major motorway arteries and intersections.

I think this is more about last-mile fulfillment.
WiFi Full Form: What Is WiFi with Full Information?
V3 signatures do support key rotation iirc, but they're only supported by several latest Android releases. Their existence wasn't even officially announced by Google yet. So, yeah, as of right now, everyone would have to reinstall the app.
I've been working on a startup (owned by a large fashion corp.) that develops a digital showroom for the fashion industry, and this is a clear shift I've been noticing. It's quite interesting.
I've seen this behaviour in outsourced software development. In the end they had 10 times the people they would actually need on projects. And they were mostly trapped inside deadlocks and doing nothing.

Just like if you try to parallelize a single threaded application without redesigning it. Just multiplying the core count of the CPU by 10 may bring you a few percent increase in speed, but nowhere close to the expected +1000%.
To be clear, I had this device when I was a kid, and it does use magnets; it is just that it had to move the magnet with motors underneath the board.

You can also see it doing captures in the video: it does them the same way you say that "Square Off" ("rip off"? ;P) one does: by first moving the captured piece off the board.

I found a video of someone pitting the Grandmaster vs. the Square Off (which won, though of course that seems obvious given that we have gotten much better at gaming AI in the past few decades)!

https://youtu.be/SWy9z3WKNyg

FWIW, I honestly don't remember it being this loud, and am wondering if it is because it is old or because I am old ;P.
They're adapted against milk for the same reason everything else is: producing lactase has a cost, and it makes no sense to pay that cost when there is no lactose in your diet.
There is not much of an explanation of what this did here, but from what I can tell it predicted all that was needed correctly?
Pretty impressive, if so.
I think it's more a case of the press release people wanting to call it a unqualified "law", as far as we know black holes do evaporate slowly.

But there remains is a statement about how the final area relates to the area of the two merging black holes.
Well, we know that

1. People with the gene variant drink slightly less than people without it, but otherwise their drinking patterns follows everyone else's.

2. alcoholism does not cause the gene variant in individuals (obviously).

3. The gene variant is invisible. Within a reasonable population group, it seems basically random who carries it or not (I.e, you can predict that Koreans are more likely to carry it than Americans, but within a group of Americans, or a group of Koreans, it's basically impossible to guess who carries it or not). It's even been used for Mendelian randomization studies, because as far as we can tell, it affects nothing else than alcohol digestion.

A better explanation for the relative lack of success of disulfiram is that you don't take it from birth without choosing to. You have to want to take it to gain the benefit of it, but if you need it, you don't really want to take it. You want to drink. It's the big problem of addiction, you want things that contradict each other, and you want the bad things more.

The drug researcher and philosopher Ole-Jørgen Skog wrote a lot of interesting things on this topic, on "The weakness of will" and time preferences:

"If the consumer's sole motive for changing his level of patience is to escape an allocation that is dictated by his first order preference (including time preference), but that contradicts his second order preferences, he will not be able to achieve this by rational means. This is to put the cart before the horse." (But he thought that if you sought patience for its own sake, rather for the sake of not wanting to be an alcoholic, there was maybe a way. Since deciding to value patience for its own sake is not strictly speaking a rational decision.)
All code is compiled to its final machine-code form at start-up, so there's no warm-up. It's closer to an AOT compiler than most JITs.
I don't think GraphQL is used to query graph databases directly, is it? I've always understood it to be an API protocol that was built to serve some specific needs Facebook had (e.g. bundling multiple HTTP requests), not a full-on graph query language. I should probably mention that I don't really have extensive experience using it, though.
Super Fast 6G Connectivity Is Closer Than You Think
Interesting system. But I wonder how many people are going to type their credit card [or other confidential] numbers into an unknown and untrusted website, to test it?
FedEx is a private company, only the USPS has actual law enforcement (fun fact: they're the oldest federal law enforcement!).

There are three reasons I can guess why at least the USPIS hasn't picked it up... they're overworked (and understaffed), the reports haven't made it past the gatekeepers (=been binned because it was too confusing), or there is an ongoing investigation that likely has been compromised now.
In what world can a DNS provider verify every single domain purchaser’s intent and activities post-sale? I don’t understand your argument at all…
> isn't the real world not yet ready for pure IPv6 ?

Unfortunatley not. I can name a number of mid-to-large sized ISPs in major "western" countries who are still not able to give their customers IPv6, and the worst offenders haven't even finished deploying IPv6 on their core networks !

Fortunatley that number is diminishing as the months and years go by, but for now we are still in a world where you're going to struggle setting up a new ISP if you don't have any IPv4.
Cheques? In 2021? Next you’ll have me believing you can scrawl a signature to verify a card payment.
A Year Without a Mask
And libel laws do not stop it being n1 result on google, or random people re-posting it. Libel laws were meant to deal woth traditional media
> You can't play a song in C minor, because that would require three flats. So instead you play the song with A as the root (A B C D E F G). That scale is a mode of the major scale, called the Aeolian Mode.

This paragraph confused me until I realized it's supposed to say "That scale is a mode of the MINOR scale".

Other than that I thoroughly enjoyed this. Never thought of a scale as a bitmask before.
Probably because GraphQL (despite it's name) isn't made for querying graphs.
Good intro article, but

> For instance, a connected car travelling on the motorway at 70mph (110km/h) would travel almost 2 meters in the amount of time it takes for a 4G mobile network to respond. The lower latency of a 5G connection will allow mobile technology to be used more safely in cars.

God please no!
Thanks for the correction, I was operating under a false assumption.

Good to know!
You are free to think that. I've seen it done.
Home of the Week
Ask HN: Where do you get inspiration for your experiments and side-projects?
Hello!

I was thinking about this. As engineer, developer I keep myself in shape by constantly challenging myself with various side-project, experiments and proof-of-concepts. A lot of this projects are there just to test technology, to learn and mostly to have fun.

So my question is this. Where do you get inspiration for your experiments and side-projects or even side hustles?

I was thinking about creating a platform where people would submit ideas for small and highly experimental projects. And then then people like myself would crack them. Mostly just for fun and not-so-much for profit.

I obviously don't wanna encourage people to work for free and there are legal aspects to it; but still. Would you give it a shot?

Cheers!

- @otobrglez
TIL: Americans spell "cheque" as "check".
Japanese ”cheese” is not really cheese. You easily can’t find a cheese that would not be a single slice packaged in a plastic. The ”actual cheese” like sold in europe is harder and comes in actual blocks.
Checks are still big in the US, no?
When at Google, we did the simpler version (of not replying) for our DiRT week exercises. DiRT stands for disaster recovery testing.
Time series are numbers measured or aggregated at some consecutive times or days. It's a data type with a specific structure, like a set, a vector or a matrix: what's inside varies a lot and depends on the specific application (e.g. daily temperature, rainfall, stock prices, items sold, water level in a river, corona infections).

Prophet is a Python library that implements a specific type of extrapolation model to predict the future: i.e. you input a few months/years of historical daily sales figures, it tries to detect trends and recurring patters, and it outputs predictions of future daily sales. It's currently one of the most popular approaches, probably because it's pretty easy to use and a good fit for many time series in commercial companies. The article shows a lot of of examples of time series where the approach does not work well.

If the layperson doesn't have to produce forecasts for their job, (s)he probably has little use for Prophet (or other statistical forecasting models).
> I'm currently in a high bus factor job, [...]

That's actually a low bus factor, isn't it?

https://en.wikipedia.org/wiki/Bus_factor
Also see Axios article with reaction/analysis:

Exxon lobbyists' unfiltered climate remarks caught on video by Greenpeace

https://www.axios.com/exxon-lobbyists-caught-video-greenpeac...
Security. Adding security as an afterthought normally leads to insecure systems. Always analyze your security requirements, perhaps you decide that some parts do not need strong security, but at least you have done the analysis.
The problem is that we have elected leaders that only care about being in power. They will happily watch the world burn unless a majority of the voters want them to move.

Sadly I don't think most people are ready to make the necessary sacrifices to stop climate change. At least not yet. And I think we will pass the point of no return before people are ready to make those sacrifices.

The problem is not technology or scientific, the problem is human nature.
So much negativity in the comments here on the subtopic on "what caused the evolution". Yes, we know that nobody really knows, the author doesn't really know either.

What the post conceptually centers on is best depicted in that chart in the middle. Also, if you read the entire thing you'd have found out that the author isn't trying to make any specific point, but rather is telling a story.
It will not change until dev stop developing on Chrome as their main browser. Maybe tooling could be an excuse for very large webapps, but otherwise and especially for websites (hello simple forms broken except if you use Chrome) it's definitely not.

Also it's orthogonal with JS usage, anecdotically I mainly work on JS heavy websites and don't use Chrome.
Not the point.

This turns the trust model of the ecosystem on its head.

When I install an app like Signal today - I have cryptographic certainty that it was the code the Signal team intended me to have with 0 tampering.

In the new model - I have to trust that Google, it's employees and processes have not been subverted by another actor.

It is a fundamentally weaker model. I hope Google budgeted some legal time responding to government court orders to spin custom targeted versions of apps for persons of interest. It might also be a tempting honeypot to identify employees that have been compromised by nation-state actors.

It would be interesting to hear what things would have looked like if changing the trust model was off the table. Surely it must have had at least some discussion.
I've wondered about this to. Milk seems more widely consumed here in Taiwan than in the US. Milk tea, milk/fruit smoothies, cream-filled pastries everywhere, cheese is a very popular fusion with local specialties like danbing. If Asian people are so lactose intolerant, is everyone secretly walking around battling diarrhea?
If you have historical data with timestamps and you want to predict how that data trends in the future, you can apply statistical methods yourself, or train a neutral net, or use an off-the-shelf package like Prophet.

Whether a layman finds it useful depends on the data, what they're used for, how well they're suited to Prophet's strengths, how lay the man is. I imagine by the time a layman gets to the point of understanding its strengths and weaknesses, she will no longer be quite a layman