News for hackers. Stuff that matters.

adiM

How does that help in preventing Google from profiling you?
Re:Wayland desktop for Linux with skeuomorphic design on Thursday October 15, 2026 @11:09PM (#50113525)
Wow! There would come a time when kids on hacker news will not recognize jwz!

https://en.wikipedia.org/wiki/Jamie_Zawinski

Re:Probability-Generating Functions on Thursday October 31, 2024 @12:59PM (#42008740)
Don't have a reference on the top of my head, but the main idea is as follows:

The definition of MGF of a random variable with PDF f(x) is

E[e^{sX}] = int_{-inf}^{inf} f(x) e^{sx} dx

The definition of Laplace Transform of a signal f(t) is

F(s) = int _{-inf}^{inf} f(t) e^{-st} dt

Hence MGF is 'flipped' Laplace transform

Now for we know that the MGF of sum independent RVs is the product of their MGFs. So if we take the inverse Laplace transform, the density of the sum is convolution of the individual densities.

Similarly, if we take derivative in frequency domain, that is same as multiplying in time domain: So M'_X(s) is the 'flipped Laplace transform' of x f(x) and its value at s=0 is the 'DC-gain' of the signal.

And so on... the properties are all immediate consequence of the definition of MGF and since the definition is essentially the same as that of a Laplace transform , there is an equivalent property in signals and systems as well.

Re:Probability-Generating Functions on Thursday October 31, 2024 @09:10AM (#42006554)
One can also think of probability generating functions as (flipped) Z transforms, moment generating functions as (flipped Laplace transforms), and characteristic functions as Fourier transforms of the respective PMF/PDF. Lot of their properties then follow from simple properties of Signals and Systems.
Re:Antifragility in Complex Dynamical Systems on Monday August 12, 2024 @11:04PM (#41231793)
Is this just risk seeking behavior (in contrast to risk sensitive)
They are significantly different!
Re:Daylight Computer – New 60fps e-paper tablet on Friday May 24, 2024 @04:51PM (#40470394)
I found their reviews to be a bit too rosy and not highlighting the weak points of the products properly. But I do not find them to be biased.

The most honest source is Voja's My Deep Guide Channel on YouTube. Very detailed and informative reviews.

Re:Daylight Computer – New 60fps e-paper tablet on Thursday May 23, 2024 @08:08PM (#40461439)
FYI: goodereader has a bad reputation in the eink world. Their reviews are fair but their shop is borderline scam.
Re:Daylight Computer – New 60fps e-paper tablet on Thursday May 23, 2024 @08:01PM (#40461389)
Ratta (SuperNote) does not have front light. At least the A6X that I have. I don't think that the new version (Nomad) has a front light either.
Re:Show HN: I made a simple daily word puzzle on Monday February 19, 2024 @04:39PM (#39435127)
'A' can be reused!
Therefore, likelihood ratios! (Or log likelihood ratios)
Re:A brain injury removed my ability to perceive time on Monday November 06, 2023 @03:21AM (#38160003)
It will be fascinating if there were a way for you to record the actual time when you do eat lunch (without the time being revealed to you; say a Rasberry Pi where you press a switch to record current time but it has no display). I am curious how much our body clock synchronizes with real time. I see that in my kids, who don't yet know how to read time. But they are hungry right at noon and 7pm, and will get cranky if they don't get something to eat within 15 min of that. Do adults retain such strong internal body clocks?
Re:LaTeX for publishing tabletop role-playing games on Monday September 18, 2023 @09:52AM (#37556115)
The same way that one would use markdown :-) (you JS libs or TikZ or Metapost packages).
Re:LaTeX for publishing tabletop role-playing games on Monday September 18, 2023 @03:08AM (#37553199)
I use ConTeXt, and it is relatively simple to get each environment to whatever you want (plus you can code everything in Lua).
Re:LaTeX for publishing tabletop role-playing games on Sunday September 17, 2023 @05:46PM (#37549664)
I often wonder, if one is going to add such tags anyways, why not directly use LaTeX, ConTeXt, XML, ... for example

\begin{conccurrent}{Hacker News Thread} I'm writing in an HN thread. \end{concurrent}

is not so different from the markdown source. All the benefits you mention are simply from using semantic markup.

Re:E-ink is so Retropunk on Saturday August 26, 2023 @04:10PM (#37276417)
Is it possible to generate the planner for A6X. The customization options do not seem to mention page size.
Re:Emacs Is My New Window Manager on Tuesday August 01, 2023 @05:37PM (#36963421)
A bit attraction of _tiling_ WMs is ... automatic tiling of windows. Does Gnome do that (haven't used it seriously in about 2 decades)?
Re:Julia Evans: How Integers and Floats Work on Monday June 26, 2023 @08:31AM (#36478880)
Curious as to why you thought that this was an ad? Julia Evans has written a bunch of such zines in the past as well and they are quite informative
Re:Data-Driven Science and Engineering 2nd Edition [pdf] on Saturday June 17, 2023 @08:15PM (#36376088)
Only Wisconsin. Canadian universities usually have .ca rather than .edu
Note that context also support for spreadsheet like calculations in tables, so it could perhaps be translated at markup level.
Re:The Nine Billion Names Of God – short film [video] on Monday April 03, 2023 @08:53PM (#35433573)
But printing them, would take some time and paper.
Re:Cosmic DE update: System76's new Linux desktop environment on Tuesday January 31, 2023 @07:48PM (#34604680)
I am a long time Linux desktop user (20+ years) but am still forced to keep a copy of windows around to use Adobe Acrobat for filling and signing forms. I have tried various Linux pdf applications (including commercial ones), using Adobe Acrobat via wine/crossover but haven't found a solution that works across the board. That is the only holdout from not having to interact with windows/mac.
Unicode math input works out if the box in Context and (I believe) also in lualatex + unicodmath package.
Re:Microfeatures I'd like to see in more languages on Thursday January 05, 2023 @08:51PM (#34269918)
Julia also has

x |> f

as a syntax sugar for

f(x)

and is useful for the same reason as Mathematica.

Yes, Julia has multi-dispatch, which works really well for this type of overloading
Re:New XPS 13 Shows the Price of Going Too Thin on Sunday June 12, 2022 @08:39PM (#31719701)
> And a laptop is usually a secondary computer

Definitely not true. For most college students, a laptop is their only computer.

Re:You need to know what right-half-plane zeros are on Friday June 10, 2022 @01:24PM (#31697013)
One can always test the hypothesis via an experiment:

https://youtu.be/9cNmUNHSBac

Older »