NoSpotOfGround
@NoSpotOfGround@lemmy.world
- Comment on Natural selection at work 2 days ago:
The common ancestor that links whales and deer existed millions of years ago and exhibited features shared by both groups. This ancestor likely possessed basic artiodactyl characteristics, such as an even number of toes on each foot and a certain bone structure within the ear. Over time, as these creatures diverged to inhabit distinct environments, their physical traits adapted accordingly. Despite these differences, the underlying genetic similarities persist, revealing their deep-rooted connection.
- Comment on at least no more trolley problems 5 days ago:
This is not like a falling kid problem…
If he had more than 0.5 seconds to move the kid he could have done so without severely hurting him. On the other hand, if he had less than 0.5 seconds he’s now killed everyone on the train.
- Comment on xkcd #3141: Mantle Model 1 week ago:
I… I don’t understand what the joke is here. Not even the explainxkcd mentions any kind of humor outside of the alt text. What am I missing?
- Comment on Grocery Chains Are Passing Trump Tariff Costs on to US Consumers With Higher Prices: Report 3 weeks ago:
#americastworldproblems
- Comment on I have never seen the 😗 emoji used, but I have seen a TON of :3 1 month ago:
And 😙 is more like: Image
- Comment on pragnent 1 month ago:
- Comment on WhoFi: Unique 'fingerprint' based on Wi-Fi interactions 1 month ago:
“Who’s signal is this?”
“Oh, it’s that guy with the metal strips. His address is on a post-it note somewhere around here.”
- Comment on [deleted] 2 months ago:
Symptoms of [nitrite] poisoning can vary depending on the amount and duration of the exposure. Those with very mild methemoglobinemia might not have any symptoms at all, or might appear a little pale and feel tired. Moderate-to-severe poisoning is associated with cyanosis (blueness of the skin), confusion, loss of consciousness, seizures, abnormal heart rhythms, and death.
It’s it supposed to be special in some way?
- Comment on Most Common PIN Codes 2 months ago:
Meh. He only had $23.50 in his account.
- Comment on Blocking real-world ads: is the future here? 2 months ago:
I’m all for the “SLEEP 8 HOURS” bit though. I need more of that in my life.
- In a First, America Dropped 30,000-Pound Bunker-Busters—But Iran’s Concrete May Be Unbreakable, Scientists Saywww.popularmechanics.com ↗Submitted 2 months ago to technology@lemmy.world | 87 comments
- Submitted 2 months ago to physics@mander.xyz | 7 comments
- Comment on AI search finds publishers starved of referral traffic 2 months ago:
You had one job.
- Perovskite-based image sensors promise higher sensitivity and resolution than silicontechxplore.com ↗Submitted 2 months ago to technology@lemmy.world | 14 comments
- Comment on [deleted] 3 months ago:
Since I didn’t know:
“Parasocial” refers to a relationship or connection felt by a person towards someone they do not know personally, typically a celebrity, character in a media, or public figure. This relationship is one-sided, meaning the other person is unaware of the connection.
- Comment on Jayant Narlikar, the Indian scientist who challenged the Big Bang theory, dies at 86 3 months ago:
His theory was the Hoyle–Narlikar theory of gravity.
Unfortunately:
the quasi steady-state hypothesis is challenged by observation as it does not fit into WMAP data.
- Comment on Color-correcting algorithm removes the effect of water in underwater scenes 3 months ago:
I get the impression this is a video-only thing because you need multiple vantage points of the scene. You can still extract a single frame in the end of course (like the article itself does), but you’ll need to shift around meaningful distances, like attack submarines do with Target Motion Analysis.
- Submitted 3 months ago to technology@lemmy.world | 8 comments
- Comment on The most powerful laser in the US recently produced 2 quadrillion watts of power 3 months ago:
So 25 attoseconds… That is impressive. The power record holder right now is the Măgurele laser in Romania, at 10 PW, but it lasts a thousand times longer, at 25 femtoseconds I believe.
- Submitted 4 months ago to energy@slrpnk.net | 0 comments
- Submitted 4 months ago to technology@lemmy.world | 21 comments
- Comment on USDA Reverses Course, Commits to Restore Purged Climate Webpages in Response to Farmers’ Lawsuit 4 months ago:
I think “blitzkrieg” matches somewhat: don’t stop to engage every stronghold, just drive around them, isolate them, and cut off their support networks.
- Comment on OpenAI abandons plan to become a for-profit company 4 months ago:
This doesn’t make sense to me. The ultimate value of shares is in the dividends they represent, no? If there are no dividends ever, what are they sharing in? Is it just a postponement until future dividends? A share in control of activities, or what?
- Comment on Even if it sounds smart, it might be dumb. 5 months ago:
Disagree. Just because luck saved your ass doesn’t mean what you did wasn’t stupid.
Winning a round of Russian Roulette doesn’t make you a genius.
- Comment on Implementing a spellchecker on 64 kB of RAM back in the 1970s led to a compression algorithm that's technically unbeaten and part of it is still in use today 5 months ago:
Thanks, and sorry about that! I removed the colon from near my URL now, just in case.
- Comment on Implementing a spellchecker on 64 kB of RAM back in the 1970s led to a compression algorithm that's technically unbeaten and part of it is still in use today 5 months ago:
The real meat of the story is in the referenced blog post: blog.codingconfessions.com/…/how-unix-spell-ran-i…:
TL;DR
If you’re short on time, here’s the key engineering story:
- McIlroy’s first innovation was a clever linguistics-based stemming algorithm that reduced the dictionary to just 25,000 words while improving accuracy.
- For fast lookups, he initially used a Bloom filter—perhaps one of its first production uses. Interestingly, Dennis Ritchie provided the implementation. They tuned it to have such a low false positive rate that they could skip actual dictionary lookups.
- When the dictionary grew to 30,000 words, the Bloom filter approach became impractical, leading to innovative hash compression techniques.
- They computed that 27-bit hash codes would keep collision probability acceptably low, but needed compression.
- McIlroy’s solution was to store differences between sorted hash codes, after discovering these differences followed a geometric distribution.
* Using Golomb's code, a compression scheme designed for geometric distributions, he achieved 13.60 bits per word—remarkably close to the theoretical minimum of 13.57 bits.- Finally, he partitioned the compressed data to speed up lookups, trading a small memory increase (final size ~14 bits per word) for significantly faster performance.
- Comment on The vast majority of "Remind Me"s notifications in Reddit will never be seen by users who set them. 5 months ago:
offended beeping
- Comment on The vast majority of "Remind Me"s notifications in Reddit will never be seen by users who set them. 5 months ago:
I will be messaging you in 7 days on 2025-04-07 10:06:96 UTC to remind you that there is no RemindMe! bot on lemmy.
- Comment on [deleted] 5 months ago:
I just funged it. You’ll never get me, coppers.
- Comment on SHUT UP ABOUT NICOLE 5 months ago:
E
