NoSpotOfGround
- 4 Posts
- 28 Comments
NoSpotOfGround@lemmy.worldOPto Technology@lemmy.world•Color-correcting algorithm removes the effect of water in underwater scenesEnglish21·1 month agoI 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.
NoSpotOfGround@lemmy.worldto Technology@lemmy.world•The most powerful laser in the US recently produced 2 quadrillion watts of powerEnglish4·1 month agoThat’s 25 attoseconds, no?.. If so, that’s 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. I can’t find clear info on pulse duration anywhere. They do intend to decrease pulse durations it seems.
NoSpotOfGround@lemmy.worldto Technology@lemmy.world•USDA Reverses Course, Commits to Restore Purged Climate Webpages in Response to Farmers’ LawsuitEnglish52·1 month agoI think “blitzkrieg” matches somewhat: don’t stop to engage every stronghold, just drive around them, isolate them, and cut off their support networks.
NoSpotOfGround@lemmy.worldto Technology@lemmy.world•OpenAI abandons plan to become a for-profit companyEnglish13·2 months agoThis 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?
I get that there’ll be speculation that will keep values increasing, and selling can net a profit, but what does the last share-holder get?
NoSpotOfGround@lemmy.worldto Technology@lemmy.world•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 todayEnglish1·3 months agoThanks, and sorry about that! I removed the colon from near my URL now, just in case.
NoSpotOfGround@lemmy.worldto Technology@lemmy.world•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 todayEnglish255·3 months agoThe real meat of the story is in the referenced blog post: https://blog.codingconfessions.com/p/how-unix-spell-ran-in-64kb-ram
TL;DR
If you’re short on time, here’s the key engineering story:
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McIlroy’s first innovation was a clever linguistics-based stemming algorithm that reduced the dictionary to just 25,000 words while improving accuracy.
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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.
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When the dictionary grew to 30,000 words, the Bloom filter approach became impractical, leading to innovative hash compression techniques.
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They computed that 27-bit hash codes would keep collision probability acceptably low, but needed compression.
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McIlroy’s solution was to store differences between sorted hash codes, after discovering these differences followed a geometric distribution.
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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.
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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.
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Have you considered that you may be a hallucinating AI yourself?.. Quick, try drawing a full glass of wine!
Well, no, China is bad because freedom is very restricted there and because they have ambitions to dominate the world.
Yes, every other world power in the world is more or less the same. People cannot, in general, be trusted to be “good” when given the opportunity to abuse. A world power can be held in check by the presence and efforts of other world powers, though.
NoSpotOfGround@lemmy.worldto Technology@lemmy.world•Tesla sales crash continues in Europe, with Germany down 70%English10·4 months agoLet us enjoy our schadenfreude!!
NoSpotOfGround@lemmy.worldto Technology@lemmy.world•Meet Rayhunter: A New Open Source Tool from EFF to Detect Cellular SpyingEnglish1·4 months agoOh, right, you did say “just got mine”… Never mind me. It does seem like it could be a mismatch between what the adb was compiled for and what it’s being asked to install on.
NoSpotOfGround@lemmy.worldto Technology@lemmy.world•Meet Rayhunter: A New Open Source Tool from EFF to Detect Cellular SpyingEnglish1·4 months agoI think it needs special hardware to run on:
It is developed to run on an Orbic mobile hotspot (Amazon, Ebay) which is available for $20 or less at the time of this writing.
NoSpotOfGround@lemmy.worldto Technology@lemmy.world•GitHub - LadybirdBrowser/ladybird: Truly independent web browserEnglish2·4 months agoOk, fair enough then. Could have been a simple misunderstanding.
NoSpotOfGround@lemmy.worldto Technology@lemmy.world•GitHub - LadybirdBrowser/ladybird: Truly independent web browserEnglish124·4 months agoOk, you keep saying that but never explain why/how. Like, why refuse such a small change so aggressively?
NoSpotOfGround@lemmy.worldto Technology@lemmy.world•'Everything I Say Leaks,' Zuckerberg Says in Leaked Meeting AudioEnglish2·5 months agoNo, so try to keep it short.
And after that?
NoSpotOfGround@lemmy.worldto Technology@lemmy.world•World's largest EV never has to be rechargedEnglish10·7 months agoWe truly are lost…
Looks a bit like the Arachne browser for DOS.
NoSpotOfGround@lemmy.worldto Technology@lemmy.world•Video Shows First Neuralink Patient Playing Mario Kart With His MindEnglish2·1 year agoA two-track mind.
You had one job.