skysight-inc/HackerNews huggingface dataset:
I think of the Lagrangian, what we integate to get the "action", as some sort of energy related function. I don't really attribute much meaning to it other than the fact that minimizing it implies the equations of motion, which are something we can phyiscally grasp.

For a particle in one dimension,

L = L(x(t),v(t))

The solution to the minima is where the "gradient" of L with respect to x and v is zero. However, position x
and velocity v are not independent, so that "gradient = 0" equation implies:

dL/dx = d/dt(dL/dv)

- You can define dL/dv is the generalized momentum.
- You can think of dL/dx as a force.

This gives you newtons equation, but you can say you derived it.

F = d/dt(p)

Granted, we didn't really start from a more fundamental place. But then this starts to make more sense when you realize the world is governed by quantum mechanics. And this least action principal results from the fact that, in the classical physics regime, the only part of the "trajectory" (wave function) that gives a meaningful contribution is the part along with minima of the lagrangian.
Is that method extensible to discrete dividends?
No I haven't worked at reddit for 12 years now. I had nothing to do with that.

I'm talking about what I've seen at Amazon and at the startups that I advise.

And somehow I'm doubting you saw "hundreds" of hires that you knew well enough to evaluate that they were unqualified compared to the candidates they beat out.
There was a good talk at HC34 about the accelerator Groq was working on at the time. I’m just a lay observer so I don’t know how much of that architecture maps to this new product, but it gives some insight into their thinking and design.

https://youtu.be/MWQNjyEULDE?si=lBk6a_7DTNKOd8e7&t=62
How Much Vitamin D Do You Need to Stay Healthy?
does that sampling function assume every "area code" contain the same number of usable numbers? In the case of some big sites out there (twitter, etc), it's common to have certain shards be much less dense when they hold data that's more requested - eg there'd be fewer numbers on the area code Justin Bieber is in, etc. That might skew things considerably..
I’d have to double check a screenshot but it’s likely the largest number that can be displayed in the area given for the score.
it doesn't. it only works incidentally. The author isn't an EE and has designed a circuit as if an artist (or an AI) drew a picture of what a circuit looks like.

The weird topology voltage divider attenuates the signal. the op-amps buffer the output. The 470R resistors do nothing. The 1k/1k virtual ground does nothing.

The rest of the authors writings smell of /r/iamverysmart
> There are 72 students on the dance team, and 4 over 9 take tap lessons. How many students take tap lessons?

Who writes questions like this? Maybe this came from a problem set for elementary school math?
> temporary garbage re-skins of the same products from half a dozen suppliers that likely won't exist next year.

This has been my experience with Amazon too. Better to let direct sellers like Temu and Shein sell these products at much lower prices, and Amazon can stick to branded/expensive goods that might need to be returned.
Martian hyperloop is the practical side of the plan? Listen to yourself.
I would not be confident at all in engaging an LLM in a trivia contest such as this. Unless the subject is about what I spent 20 years studying, I am almost certain that my 25W meat-processor is inferior to the MW scale silicon monster that is an LLM.

I wrote a small book once and I poured almost all I know into it. It came out as a few MB PDF file. The freaking LLM contains GB or TB of information in it, I am not trying to fight that.
I've been skeptical of Amazon ever since I learned that they bin inventory from all sellers together at the warehouse, so you could pay extra to buy from the manufacturer's official store and still be sent a cheap knockoff.
in the end, that scandal was the open web's official death sentence :(
Never fails to amaze me how someone who grew up in the society that has emerged over the past 15 years or so can believe that they can just make controversial political statements without having their life ripped apart by an army of moral imperialists.

The illusion of freedom is strong, I guess.
Loved this course, seriously one of my all time favorites end to end. Have yet to find a course that had the same level of fluid journey
Thanks. Would it be possible to set up a real self-hosted, federated instance today, so I could set up a community and let others run their own pds'?
They actually held out for a couple of years after Facebook and didn't start forcing audits and cutting quotas until 2019/2020
If you live in North America, you can buy an “EV” or you can buy a Tesla. And if you buy a Tesla, you probably won’t have any of the issues with “EVs” that journalists love to write about.

If you won’t buy a Tesla, there’s no point in buying until 2025 when all the manufacturers roll out NACS. 2025/2026 is going to be essentially a “soft reset” for the whole US EV market.
Similarly, a modder recently found that unrolling loops _hurt_ performance on the N64 because of RAM bus contention: https://www.youtube.com/watch?v=t_rzYnXEQlE
I don't specifically know, but typical NAT can use stateful flow information, i.e. "a UDP packet originated from inside the NAT to external IP/port X, packets from that external IP/port should be routed to the originating NAT/customer" (see https://en.m.wikipedia.org/wiki/UDP_hole_punching)
Thanks! I was looking for an RPN calculator last month, and all I could find was the HP-12C. This calculator seems to be missing the x<->y key though. What's up with that? Without a swap x and y, the stack is a lot less valuable.
This is awesome.
Consider fitting in as a browser extension so that when you open a new tab this comes up
I googled and found slides there Leif extends the method to discrete dividends: https://www.math.cmu.edu/CCF/CCFevents/shreve/abstracts/L.An...

( I'm a fixed income quant, so I didn't look for it until now.) For a more advance model than Black-Scholes, e.g. local vol I don't expect it can be extended, and one would then need use some PDE based method.
That was one of the things I did when I added audio support to my NES emulator; add NSF support as a mapper with some special case code (doesn't display video, uses controller inputs to switch tracks). It seems like it only took me a couple of hours to add.
1991 was basically peak Amiga! Soon after that, 386's with SVGA and Sound Blaster cards started to become pretty cheap. I gave up on the Amiga around 1994, got a 486, and ran Slackware Linux.
>Arguably, phone owners should get some kind of say in how this works.

You as the phone owner can refuse to relay the tracker, but you shouldn't be able to disable it
Dengue spike fuels public health threat in previously untouched countries
Or, you'd make sure that your liability was limited to one year, absent of any servicing. Maybe you'd have a renewable service contract, yearly, and one of the requirements is local inspection.

>force the owner to get the train serviced.

This is coercion, implemented via subterfuge. It's no different than if they sent guys with sacks full of door handles or whatever to take control of the trains, to accomplish the same result. Or if the client hired staff to crack the provider's server, and either installed ransomware, or stole the solution.
Ridiculous. The way to operate is through the laws in question, rather than removing agency from the client.

If the client does not want to pay, you warn them of possible consequences, ask them if they would like to purchase an extra diagnostics package, and remind them that after a year, maintenance of the product is required to bring you back into the picture formally.
Strange to see these ideas on a site called “Hacker News” given the “hacker ethic” is to make information available to all: https://en.m.wikipedia.org/wiki/Hacker_ethic
Amazon went from 2 day and often next day for me before Covid to a week at best, with prime.

Walmart free shipping even without Walmart plus is running 1-3 days. I cancelled prime.
So that's how Precrime works.
Phage treatments are nothing like that. They are viruses that target specific strains of bacteria. So if someone has produced a phage for your specific strain you would only need to take the phage with no nasty antibiotic side effects. Going to the hospital and taking a antibiotic cocktail seems like the perfect way to get more antibiotic resistant bacteria.
They could use a random redirect function. Throw the user a video URL which is random, but then redirects to the video that you want. So one could never count the space?
Comparing a third-party using Apple's iMessage API (not network) without their blessing to someone connecting to your home network, compromising your security, is laughable.
I love https://redditmap.social/

What are other things like this?
Mine started with 7... I still remember it, even though I signed up to CompuServe over 35 years ago. It was the first thing I was able to call with a modem, until I got numbers for local BBSes.
Indeed, a transformation (of some kind) is fairly standard, including the derivation for the standard analytic solution for European options.

AFAIK, discontinuous first derivative per se may act as a seed to an oscillation due to its high frequency content that are not captured by any finite resolution algorithm (n.b. Gibbs phenomenon). But it is Crank-Nicolson that characteristically creates these oscillatory problems -- in other words, there are algorithms that can gracefully handle the discontinuity without creating oscillation.
You can blow one database (level), but not the second one (git) which you also need to sync, and this doesn't cover the issues of changing the data layout, git isn't always great in tracking those (doesn't store renames). Then also all your data is duplicated in a git db and a flat file db

(they also don't support smartphones?)
The issue wasn't the analytics either. The issue was the engagement algorithms and lack of accountability. Those problems still exist today.
I don't think ability to forward arbitrary messages is any more a core part of Smalltalk than it is of Java.
Nice work, I like the simplicity, math blocks, and mixed syntax highlighting. My workflow for the past few years has been within all my sublime projects to have a gitignored folder named scratchpad with mixed files for this exact use case. It's annoying having to create separate tiny files if i want syntax highlighting though for a mixed bag of stuff. I would LOVE this exact app as a sublime plugin on a per project basis that created a .scratchpad file i could gitignore with this same feature set. I haven't ever gone deep on capabilities/limitations of sublime text plugins and if this would even be feasible. I definitely would want this ability for different blocks but on a per project basis or I can see the scrolling easily getting out of hand.

This project definitely hits on one of those things just about every dev probably has a slightly different approach to and nobody has really targeted a solution towards so kudos on that.
It's likely it's 3 bytes of BCD (binary coded decimal). It's a handy way of storing things like scores, especially on 6502 processors which have built-in BCD handling support.
A lot of good physics students here!

When I was a student of physics and math for physics,
the math was solid but often the physics had to be just swallowed whole. This thread has some explanations missing from the physics sources I had!

I'm busy with my startup, but I'd like to see how the physics of Lagrange, Hamilton, Schrödinger, etc., e.g., least action, quantum mechanics, really work and to compare them with Newton's calculus of variations (the shape of the wire that would let a bead slide down in least time), deterministic optimal control (e.g., the book by Athans and Falb), Kuhn-Tucker optimization conditions, Lagrangians in optimization, etc.
How many chips are used for this demo? Do they have dram? I remember the earlier versions did not have dram.

Are they also used for training or just inference?
It's also a name.
If someone wanted to move from Singapore so they stop feeling like a poor millionaire where would you suggest they go?
Oops. I misunderstood the tone. Maybe I need more sleep? ;)
Amazon does not universally comingle. There are many exempt product categories in addition to the seller's ability to opt in/out. If you buy a product from a specific seller which arrives with a stuck-on barcode in addition to the UPC, that product probably wasn't commingled.

(The fact that this information is so important and hidden is of course inexcusable)
Like other vague, vogue philosophical concepts, the Hacker Ethic is many things to many people.

To me, "every avenue of research must be pursued at any human cost, and ethics are at best an afterthought" has nothing to do with being a Hacker.
Not exactly what you're describing, but https://brid.gy/ is a pretty neat project in this space.
checkout swissmicros.com They make several functionally close HP calculators. Its a rather interesting approach and unless HP itself resurrects the OLD calculator line, these are close as you can get to a new HP calculator.
How easy is it for companies to setup private local servers using Grow hardware (cost and complexity). I've got money. I want throughout.
but now you have to store state for some arbitrary url, share it across many different clusters/regions, record which IP has seen it etc...

a lot of work, for very little gain.
Something like Hibernate in Java will fetch data from the database once, populate objects (potentially making cycles and complex relationships between Java objects), and then let your business logic deal with those long-running, persistent Java objects (as opposed to objects that you deallocate right after being done with then after you queried the database)

This means that if you ever happen to use this object again in another context without making a new query, you risk dealing with stale data. And this happens all the time, because querying the db is seen as "expensive" and reusing model objects is "cheap"
On a similar note, can someone tell me what's the fastest (wireless) way to transfer files between two laptops on same network (i.e. hotspot)?

scp, rsync, wormhole give me only 2-3 mb/s.

For the context, I'm trying to transfer about 50-70 GB files.

What's causing the bottleneck here and what am I missing? Thanks in advance!

https://github.com/magic-wormhole/magic-wormhole
No BCD support on the specific chip used in the NES, though.
I was expecting to find out how much data YouTube has, but that number wasn't present. I've used the stats to roughly calculate that the average video is 500 seconds long. Then using a bitrate of 400 KB/s and 13 billion videos, that gives us 2.7 exabytes.

I got 400KB/s from some FHD 24-30 fps videos I downloaded, but this is very approximate. YouTube will encode sections containing less perceptible information with less bitrate, and of course, videos come in all kinds of different resolutions and frame rates, with the distribution changing over the history of the site. If we assume every video is 4K with a bitrate of 1.5MB/s, that's 10 exabytes.

This estimate is low for the amount of storage YouTube needs, since it would store popular videos in multiple datacenters, in both VP9 and AV1. It's possible YouTube compresses unpopular videos or transcodes them on-demand from some other format, which would make this estimate high, but I doubt it.
Also in Seattle - I've never had that experience. Literally ordered something last night with next-day shipping, and it arrived in the early morning. Once in a blue moon something outright disappears, but so it goes with 20+ orders per month...
Why gitignore? Wouldn't you lose all your notes if your computer died or similar?
Insurance companies send a claims adjuster to inspect it themselves. They aren’t just going to fix your car unless they think it’s covered because of some type of accident. It sounds like they agreed with Tesla at their expense.
The Tetris board is 10 blocks wide, so to be able to play the full field, you need to be able to tap left or right at least 5 times before the block lands. Without tapping at super-human speeds, the fastest way to move the blocks that fast is by holding the left or right button down and letting key repeat take over. When that’s someone’s approach, level 29 becomes fast enough that the pieces can’t reach the edges of the board, so it was traditionally called the “kill screen”, since it wasn’t practical to make progress from there. While it’s possible to get to 999999 before reaching level 29 with that play style, it just didn’t happen all that often, and only by the most elite players.

The last few years have seen people learn how to “roll”, effectively lightly pressing left or right and then drumming their fingers on the back of the controller, getting discrete taps far faster than typical. That lets modern players continue playing at level 29 speeds, and since the speed never increases again, they can play until the game gets to situations that could reasonably be ignored as impossible in the 80s.
Is the barcode sticker a way of changing the identifier so that it specifically cannot be co-binned?
Periodic Table(s) of Programming Languages
The number I came up with last time I looked into this was about 60% of page requests are by bots on any normal website.
Yeah that was my immediate response - what makes them think that videos are actually distributed randomly across the space? I would assume that the numbers are more like a UUID which has random sections but also meaningful sections as well, so it is quite likely that certain subsets have skewed or more/less density.
It’s always interesting when people ask to have slides shared because I minimize what’s on the slide…so I can talk about it. If I’m not presenting the slides aren’t going to help much.
>Energy is whatever gets minimised in a Newtonian system at equilibrium.

For what it's worth, that's only for the stable static equilibria of frictionless systems without air resistance.
How much do they cost to buy? Could I get something reasonable for $20k?
There was a time the modem was commonly separate from the router.

Many ISPs do include a router in their modem with some wifi.

It’s often limited in some capacity in real worth use which lets customers over pay and undercover speed and be open to upgrading to a faster plan.
Have a bunch of static data that should live in a database? Just check that sucker into git and load it into memory on boot. Bing bam boom.
Overgeneralization. Also article has list of countries.
I like how ChatGPT lets you speak efficient jargon while I can read in layman terms. It says an Arc Fault Circuit Interrupter is supposed to detect arcing electrical faults, but some appliances have arcs in their normal operation, causing nuisance trips. A ferrite choke is a ring of magnetic ceramic that is designed to suppress high-frequency electromagnetic interference in electronic circuits. Clever and practical, says ChatGPT.
and yet, in practice, it doesn't matter that much (most of the time)

models just have to useful, they don't have to be correct
It's a consumer product and it has to compete as one. We've been pretty aware of that from the start.

I think you're under-estimating what's happening with 3rd-party feeds. That's a core pattern where independent services can integrate into the UX as if they're native to the product. This means turning the client into an open platform for third-party applications.

That's been a success with feeds. They're actively adopted and created by users. Most of the feeds are hosted by skyfeed, a 3P app which gives users a GUI to create them. The author of skyfeed submitted this actually. Talented dev afaict but I've not met them, which is kind of the point. (Looking forward to it though, redsolver!)

3P integration operates by a thick client model. We exchange typed JSON that describes content and interfaces. This lets services drive the client through request/response flows. We can bounce out to webviews when we need, but not executing code means better integration into the app, which means users get access to new experiences within the client and providers get users more easily. This being social protocol means that auth and high level verbs (following, liking, commenting) also come along. The Web 1.0 did quite a bit without client scripting, and I suspect this client can too.

I also want to mention: the product experience right now is establishing a UX on a protocol-driven network that feels good to consumers. Our metric for success wasn't whether it was novel; it was whether we could meet consumer expectations. If we can prove out scaling -- which I'm now confident we will -- then we've established the core of the network. After that we use that core as a backbone for 3P devs to build integrated experiences, and it should lead to a notably diverse product, and I think that's the compelling position for us to offer.
Will Israel declare their Most destructive Nuclear weapons any time soon?
I doubt that CBP spending 30+ minutes of bureaucracy and agent time to inspect, calculate the true value of, invoice and bill 100$ worth of items for 10$ worth of tariffs would be a net profit.
At the moment there’s no issue because there’s still only one server. De facto I can’t imagine any federated protocol that won’t enable servers to block each other, though.
By coincidence, I found out about him through the “Smallest USB-C MIDI Synth” on Youtube just today.
All of these are used.
Your intuition is quite correct. These methods (Leif et al) do not extend well to different boundary or intermediate conditions that are quite necessary in real life scenarios. AFAIK, there are a few teams on the Street that do fairly advanced numerical analysis, but most resort to Monte Carlo or some statistically-informed perturbation theory.

(I wish I could talk more, but yeah, legal obligations)
I'm interested in the carbon footprint.
A Fun NFL Playoff Simulator
Uses Vegas odds for remaining NFL schedule to run a Monte Carlo simulation to see probabilities of each team getting a playoff birth.
If some company makes a less sanitized but equally capable version of GPT4 then I could see it replacing Google.

But for now you must keep your searches to a very limited, sanitized, corporate, non-copyright infringing, non-adult set of knowledge. And it's impossible to know what that will be beforehand, which makes using the tools very frustrating.

For example, try searching for anything medical related. Even if you're clear that you not looking for medical advice, you're just looking for info, it won't give it (sorry, as an AI I can't give medical advice). I imagine this is very frustrating for medical students.

And yes, I'm sure that I could coerce it into responding. Pretend your my grandmother telling me about her old medical recipes or some such. But that's still too annoying to do as anything except for testing the boundaries of the tool.
A mountains? A sky?
In the first few days at my previous job I was asked by my bosses' boss to "give them tips to design slides". I told them something of the lines that I don't like at all that "telling stuff with PowerPoint slides" culture of the directorate of uni and that a PowerPoint slide can be fatal ([0]) - but they brushed it off as some sort of nonsense.

https://www.zdnet.com/article/death-by-powerpoint/
I bought AA wireless for this; I think it was the original product.
All used. Don't try these.