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roflmaostc commented on The History of Xerox   abortretry.fail/p/the-his... · Posted by u/rbanffy
1718627440 · 5 days ago
I actually don't expect other scanners to preform differently.
roflmaostc · 4 days ago
Why? Can you share any examples?
roflmaostc commented on The History of Xerox   abortretry.fail/p/the-his... · Posted by u/rbanffy
roflmaostc · 5 days ago
Whenever I read about Xerox, it reminds me of the story that their scanners would randomly change numbers on prints

https://dkriesel.com/en/blog/2013/0802_xerox-workcentres_are...

roflmaostc commented on Koralm Railway   infrastruktur.oebb.at/en/... · Posted by u/fzeindl
tomw1808 · 8 days ago
"The Koralm Tunnel opened on the 14th of December 2025" ... wikipedia living in the future past :)
roflmaostc · 8 days ago
Haha, check who updated this article. Only afterwards I realized we're not past the 14th yet...
roflmaostc commented on Koralm Railway   infrastruktur.oebb.at/en/... · Posted by u/fzeindl
roflmaostc · 8 days ago
In case you wonder, the Koralm Tunnel has a length of 32.9km

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

roflmaostc commented on Young journalists expose Russian-linked vessels off the Dutch and German coast   digitaldigging.org/p/they... · Posted by u/harshreality
flohofwoe · 9 days ago
From the article:

---

European intelligence services assess the three documented ships as operating “with high confidence“ on behalf of Russian interests. Their movement profiles are “very conspicuous” and show “little evidence of commercial activity.”

---

...of course they know, but for whatever reason they didn't find a smoking gun so far (e.g. drones on the ships or drones taking off/landing) - or maybe they did but keep it to themselves.

> Official inspections were “symbolic”—not all containers opened

...this might to be the core of the problem.

roflmaostc · 9 days ago
> or maybe they did but keep it to themselves.

Yes agree. There is no incentive that intelligence services would communicate their findings, in fact it's the opposite lol

roflmaostc commented on 10 Years of Let's Encrypt   letsencrypt.org/2025/12/0... · Posted by u/SGran
KronisLV · 11 days ago
> What's the reason to issue so many SSL certificates?

Might be related to https://www.teaminternet.de/en/parkingcrew

roflmaostc · 11 days ago
Interesting. Personally I find it questionable to squat so many domains for ads. But they pay for it and it is within the legal framework.
roflmaostc commented on An Interactive Guide to the Fourier Transform   betterexplained.com/artic... · Posted by u/pykello
hasley · 12 days ago
Zero-padding gives you a smoother curve, i.e., more points to look at. But it does not add new peaks. So, if you have two very close frequencies that produce a single peak in the DFT (w/o zero-padding), you would not get two peaks after zero-padding. In the field, were I work, resolution is understood as the minimum distance between two frequencies such that you are able to detect them individually (and not as a single frequency).

Zero-padding helps you to find the true position (frequency) of a peak in the DFT-spectrum. So, your frequency estimates can get better. However, the peaks of a DFT are the summits of hills that are usually much wider than compared to other techniques (like Capon or MUSIC) whose spectra tend to have much narrower hills. Zero-padding does not increase the sharpness of these hills (does not make them narrower). Likewise the DFT tends to be more noisy in the frequency domain compared to other techniques which could lead to false detections (e.g. with a CFAR variant).

roflmaostc · 11 days ago
Thanks for clarifying :)!
roflmaostc commented on 10 Years of Let's Encrypt   letsencrypt.org/2025/12/0... · Posted by u/SGran
elnerd · 11 days ago
One domain parking actor is responsible for nearly 10% of all issued ssl certificates. 185.53.178.99. This is just one of many bad actors.
roflmaostc · 11 days ago
This belongs to a German company called Team Internet AG [1]. Are they really a bad actor? What's the reason to issue so many SSL certificates?

https://www.whois.com/whois/185.53.178.99

roflmaostc commented on An Interactive Guide to the Fourier Transform   betterexplained.com/artic... · Posted by u/pykello
hasley · 13 days ago
I have not read the whole article. But, what is shown at the beginning is not the Fourier Transform, it is the Discrete Fourier Transform (DFT).

Though the DFT can be implemented efficiently using the Fast Fourier Transform (FFT) algorithm, the DFT is far from being the best estimator for frequencies contained in a signal. Other estimators (like Maximum Likelihood [ML], [Root-]MUSIC, or ESPRIT) are in general far more accurate - at the cost of higher computational effort.

roflmaostc · 13 days ago
Can you provide more details please?

The FFT is still easy to use, and it you want a higher frequency resolution (not higher max frequency), you can zero pad your signal and get higher frequency resolution.

roflmaostc commented on CUDA-l2: Surpassing cuBLAS performance for matrix multiplication through RL   github.com/deepreinforce-... · Posted by u/dzign
roflmaostc · 15 days ago
> Q: What if I need matrix dimensions (M, N, K) not found in your configurations? >A: 1. You can find the nearest neighbor configuration (larger than yours) and pad with zeros. 2. Feel free to post your dimensions on GitHub issues. We are happy to release kernels for your configuration.

Lol, this will be potentially much slower than using the general matmul kernel.

However, I like this kind of research because it really exploits specific hardware configurations and makes it measurable faster (unlike some theoretical matmul improvements). Code specialization is cheap, and if it saves in the order of a few %, it quickly reimburses its price, especially for important things like matmul.

u/roflmaostc

KarmaCake day258March 24, 2021View Original