graycat

58 ms·

451.
by graycat 4y ago
From the OP: > The typical assumption is that we get a normal distribution, and so we should therefore report the average time. That "assumption" is asking a lot and is not justified. Actually, the main source of normal distri
452.
by graycat 4y ago
And your reason(s)?
453.
by graycat 4y ago
I have a Windows 7 Professional system with my startup's software in some boxes and, since now my office is functional enough, am about to get that system powered up and running again. So, here's a piece of information relevant to
454.
by graycat 4y ago
> I have been trying to work GPT into my coding workflow, and it's more like an enhanced google. With one qualification, as in https://news.ycombinator.com/item?id=35431789 I agree: "My Response: For some quer
455.
ChatGPT Got an F
1 points by graycat 4y ago|2 comments
456.
by graycat 4y ago
Your solution does not work. The first place it fails is > Draw a line segment FG and extend it to intersect AC at point D.
457.
by graycat 4y ago
Birds of a feather! A solution is on the way! Code is 100,000 lines of .NET and runs as intended. Collecting data.
458.
by graycat 4y ago
For several years, I worked in a group doing research in Expert Systems (rule based programming) AI. I wrote code, wrote and published peer-reviewed papers, and gave talks, including one at Stanford, one at The Wharton School of the Univer
459.
by graycat 4y ago
See https://news.ycombinator.com/item?id=35406447
460.
Trying ChatGPT via Bing's Chat
1 points by graycat 4y ago|2 comments
461.
by graycat 4y ago
Considering the OP (original post here), from my decades of experience in working as an employee doing technical work, computing and applied math, in organizations, my main lesson, conclusion, response has been just to start a business, rig
462.
by graycat 4y ago
Right. But the code with the "error" was still legal in the programming language. The "error" was in the logic of the quick sort algorithm. So the question asked for a desk check of the quick sort algorithm. So th
463.
by graycat 4y ago
> Wait a minute, do people have to be able to solve those problems to be considered intelligent in the AGI sense? My guess is there's about 8B people who wouldn't pass that bar. Maybe 75+% of the "8B people" actually
464.
by graycat 4y ago
AGI -- artificial general intelligence? With the efforts currently getting the most attention in the tech news, are we on the way to AGI? Gee, I worked in artificial intelligence the last time. Wrote code, published papers, gave talks. M
465.
by graycat 4y ago
Yes, I saw the article in Quanta . Issue here: Click-bait headlines. Uh, I go to the Quanta Web site ~once a day. I respect Quanta enough not to get torqued at any of their headlines. Also there I pay attention to what fields of co
466.
by graycat 4y ago
What is a widget ? Google search software widget has some good descriptions, examples. I was surprised that Google had such a good description of widgets . It turns out that I am not a heavy user of widgets and would not much like them.
467.
by graycat 4y ago
There is a LOT of discussion here about the Microsoft Web browser Edge and Windows 10/11. I have some questions. Background: At present I'm a heavy user of Windows 10 Home Edition, Firefox, KEdit, Rexx, etc. From a move, I have
468.
by graycat 4y ago
Early on, I noticed: (1) There is actual reality . (2) There is how you feel, your emotions. While (1) and (2) can affect each other, the connections are weak and indirect, and, mostly, first cut, (1) and (2) are independent. So, for thing
469.
by graycat 4y ago
Two points in support of the KISS principle for UI (user interface) programming -- keep it simple ...: (1) With defaults, 3+ billion people already understand very well. (2) For anything not a default, on the first day, the programmer under
470.
by graycat 4y ago
> Of course that makes it possible. Note that it doesn’t say that f is simply measurable. Irrelevant. Again, once again, over again, yet again, for real valued random variable Y, E[Y^2] always exists. > By definition being
471.
by graycat 4y ago
Education ? Been there, done that, a lot of it, a bit too much, really. So, I'll comment: The idea of the study groups getting the participants polished on the social aspects of life sounds good. For STEM, let's see: First, h
472.
by graycat 4y ago
For any real valued random variable, E[Y^2] always exists although it might be infinity. You mentioned moments -- as I recall some writing in statistics uses that word, but I never have. Your description of the Radon-Nikodym (R-
473.
by graycat 4y ago
For a real random variable Y, E[Y^2] always exists although might be infinity.
474.
by graycat 4y ago
Moments and Hilbert space need have nothing to do with real valued function f of real variable x minimizing E[ (Y - f(X)^2 ] for real valued random variables X and Y. For Y it is enough that it has an expectation. For X, it need
475.
by graycat 4y ago
Sorry, people: My computing pre-dates smart phones. Soooo, the tools and features I use in computing also pre-date. Soooo, I don't have a smart phone or any mobile computer, and a simple glance confirms that a mobile computer brings
476.
by graycat 4y ago
E[Y^2|X] exists? Doesn't ask for much, merely that Y be measurable, that is, a random variable. We get to f'get about Riemann integration of probability densities. Full details, with some of the most elegant, powerful, and precis
477.
by graycat 4y ago
> If you don't assume existence of second moments, it is non-trivial to show that min E[(X-f(Y))^2] makes sense if any. To show that E[Y|X] exists, essentially I did that. Really, all need from X is its sigmaalgebra. That is, can d
478.
by graycat 4y ago
> I don't think it's obvious why you would want that. To minimize E[(X-f(Y))^2] is just common, traditional, nearly universal least squares with all the powers, advantages, and attributes there unto pertaining! Yes, can also
479.
by graycat 4y ago
> The unreasonable effectiveness of conditional probabilities Yup. There is a more general result that is more amazing with still more "unreasonable effectiveness": For events A and B, we can consider the conditional probabili
480.
by graycat 4y ago
It's easier than in the OP (original post): Joe is a traveling salesman and has to visit 10 cities, each once. He wants to minimize the driving distance. That is an example of an NP-complete problem. Here NP abbreviated "non-

More ›